LB-19 CW Spec Book

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					 Product Specification Sheets




                           C hilled Water Air Conditioning


                                                   •   Chiller Compact
                                                   •   MCW - modular chilled water
                                                   •   MCW - dimensional specifications
    **MENU INSTRUCTIONS**                          •   MCW/SCW - electrical specifications
    Click on the BLACK TEXT to the
    right, to view the associating
                                                   •   SCW - staged chilled water
    specification sheet.                           •   Draw thru air handlers
    To return to this MAIN MENU,                   •   Flex duct air handlers
    within each document in the
    upper-right corner, click on the               •   Blow thru air handlers
    "Return to Menu" BLUE TEXT.
                                                   •   Slim line air handlers
                                                   •   Fresh-air make up air handlers
                                                   •   Defroster
                                                   •   Chilled Water Master Controller
                                                   •   Elite TM Environmental Control
                                                   •   Passport® I/O Environmental Control
                                                   •   Seawater pumps
                                                   •   Supply & Return air grilles
                                                   •   Ducting & Transition boxes


                                                                               Literature Booklet
This booklet of specifications sheets is provided to you for inspection of our products. Realize that these sheets contain data that is
time-sensitive and subject to change without notice. Changes are made on these sheets periodically as models are improved.
We thank you for your interest in Marine Air Systems®.
                                                                                                         LB-19     Compiled on 01/06/04
FEATURES                                                                                                                                                           Return to Menu

Innovative Modular Design
• Compact base design allows flexibility in space, usage and layouts.
• Individual modules can be multiplexed to provide precise capacity
  requirements for any application.

High Efficiency Components
• Thermodynamically matched components assure maximum performance.
• Tecumseh Rotary and Copeland Scroll compressors provide high efficiency
  performance with less power consumption and quieter operation.
  The cylindrical shaped compressor allows for a compact design.
• Fewer moving parts ensure higher reliability.
• Condenser coil is custom fabricated of spiral fluted cupronickel to provide
                                                                                                                                                                                 3
  maximum heat transfer and high corrosion resistance.                                                                                                                        ,97
                                                                                                                                                                            49
• Exclusive Digital Diagnostic Controller (DDC) monitors and protects the                                                                                              & 6,4
                                                                                                                                                                  9
  system through the use of aquastats, high and low pressure switches, timers,                                                                                 ,68
                                                                                                                                                             63
  freeze controls and high limit switches, all programmed to read out on an LED                                                                           6,2
  panel for immediate diagnosis.                                                                                                                      nt#
                                                                                                                                                   ate
                                                                                                                                                 .P
                                                                                                                                              U.S
Quality Assurance
• Each unit is evacuated to 500 microns, pre-charged, hermetically sealed, load
  tested and electronically calibrated at the factory.
• Charge Guard ® protection provides sealed access ports, ensuring
  environmental protection and chiller module integrity.
• All units meet or exceed applicable ABYC and U.S. Coast Guard
  regulations, CE Directives and general Air Conditioning and Refrigeration
  Industry (ARI) standards.




                                    SPECIFICATIONS
                                    Model (1)                               CHC16RC(Z, Z50)           CHC20RC(Z, Z50)                              CHC24SRC(Z, Z50)
  Advantages of a                   Capacity Cool/RC (BTU/H)                  16,000/17,600             20,000/22,000           ------------------------- 24,000/26,400 -------------------------
  MAS Chilled Water                 Electrical Data
      System                        Voltage (VAC)                          115     230        220     230 220       220        230 220         230     220 380           230      220 380
                                    Cycle (Hz)/Phase (Ph)                 60/1     60/1      50/1     60/1 50/1    50/1        60/1 50/1       60/3    50/3 50/3        60/1     50/1 50/3
                                    Refrigerant R-22 or 407C (2)          either   R-22      either   R-22 R-22    407C        R-22 R-22       R-22    R-22 R-22        407C     407C 407C
• No refrigeration line sets        Full Load Amps (FLA) cool              8.0      3.8       4.3      5.3  6.1     6.3         6.6  7.5        4.9     4.7  2.7         6.5      7.5 3.1
  and mechanical flare fittings     Full Load Amps (FLA) heat             11.9      5.6       6.2      7.6  8.4     9.1         8.9 10.4        8.8     7.1  3.5         9.6     10.4 4.1
  which are subject to leaking      Locked Rotor Amps (Comp)                67      29         32      45   52       52         54   56         45      56   26           56       56  32
                                    K.V.A. (Kilo-Volt-Amps)                1.4      1.3       1.4      1.7  1.8     2.0         2.0  2.3        2.0     1.6  1.3         2.2      2.3 1.6
  refrigerant over time.
                                    Max. Circuit Breaker (Amps)             35      20         20      25   30       30         35   40         20      25   10           35       40  15
• Environmentally friendly          Min. Circuit Ampacity (Amps)            22      12         13      17   17       17         20   23         14      15    8           20       25   9
  hermetically sealed mod-          Refrigerant R-22 (oz/g)                         12/340              14/397                   16/454      14/397       18/510
  ules.                             Refrigerant 407C (oz/g)                         10/283                         12/340                                              13/367       18/510
• No EPA certified technician       Weight (lbs/kg)
  required for startup or field     Net Weight - 60Hz (50Hz)                52/23.6 (58/26.3)          65/29.5 (84/38.1)                            84/38.1 (101/45.8)
  installation.                     Gross Weight - 60Hz (50Hz)              62/28.1 (68/30.8)          75/34.0 (94/42.6)                            94/42.6 (111/50.3)
                                                            (3)                                                       (4)
• Flexible hose is easier to        Dimensions (in/mm)                             All CHC16            60Hz CHC20                             50Hz CHC20 & All CHC24
                                    Depth                                          18.00/457              18.00/457                                  18.00/457
  install and insulate              Width                                          11.50/292              11.50/292                                  13.00/330
  compared to refrigerant           Height                                         12.75/324              13.50/343                                  15.75/400
  line sets.                                                                       PMA1000                   P120                     P700
                                    CHC Pump Packages
• Provide full cooling capacity     Voltage (VAC)                                  115 230                 115 230                  115 230
  to areas which require fast       Amps (60Hz/1ph)                                2.1 1.0                 4.9 3.5                  7.2 3.6
  pull downs from hot starts.       Net Weight (lbs/kg)                             24/10.9                 39/17.7                  40/18.1
                                    Gross Weight (lbs/kg)                           30/13.6                 45/20.4                  46/20.9
• Most applications result in       Dimensions (DxWxH)
  fewer compressors, which            inches (in)                            18.0x13.0x9.0 (5)           18.0x13.0x7.5            18.0x13.0x8.0
  increases reliability, reduces      millimeters (mm)                       457x330x229 (5)             457x330x191              457x330x203
  weight and conserves              (1)
                                          Model numbers: CHC = Chiller Compact; 16, 20, 24 = BTU/H x 1000; RC = Reverse Cycle; Z = 230/60; Z50 = 220/50;
  power.                                  3 = 3 Phase; S = Scroll compressor (Rotary compressors are used on the 16 & 60Hz 20).
                                    (2)
                                          “Green Gas”: CHC16’s are available in 115/60/1 & 220/50/1 with the same amps as R-22 units.
                                    (3)
                                          Add 1.0”/25mm for mounting brackets. Brackets can be mounted on any side of base pan (depth or width).
                                    (4)
                                          The 50Hz CHC20s have the same dimensions as the CHC24s.
                                    (5)
                                          The PMA1000 Pump Package is 9.0”/229mm tall at the water outlet and 7.5”/191mm tall at the pump.                                          L-2135
                                                                                                                                                       Return to Menu

                             Installation Guidelines for the CHC Chiller Compact
       When choosing the proper model CHC Chiller Compact condensing unit,                   housing an engine or generator, nor in a bilge (vapors can travel up the drain
primary consideration should be given to calculated BTU loads and available                  line), unless the drain is connected properly to a sealed condensate or
power supply. Any special requirements (capacity modifications, voltages,                    shower sump pump. Failure to comply may allow bilge or engine room vapors
cycles, auxiliary heat, etc.) should be determined prior to installation.                    to mix with the air handler’s return air and contaminate living areas.
       The location of the Chiller Compact condensing unit should be                                All circuit breakers and wire gauge must be sized according to marine
dry and accessible for service, typically in engine room, lazarette or                       design standards. Only stranded tinned copper wire should be used. Route
machinery compartment. Secure the condensing unit to a level                                 all wiring through the strain-relief connectors provided in the electrical boxes.
horizontal surface with the supplied brackets. These brackets are                                   All equipment should be properly grounded and bonded. Electrical
designed to hold the weight of the equipment as well as handle any                           boxes are pre-wired for power with solid state control circuits. The system
torsional movement. Do not stack units directly on top of each other                         control switch can either be mounted on the module or remoted on a panel for
as each condensing unit must be independently supported. Racking                             more convenient access.
is available to facilitate custom installations.                                                    All chilled water condensing units use closed-refrigerant circuits,
Use Reinforced marine grade hose for the seawater circuit.                                   pre-charged with refrigerant. No additional refrigerant is required during the
The hose is to be routed upwards from the thru-hull intake to the                            installation or at initial start-up and operation of the system. Refer to other
condensing unit to prevent air locks in the centrifugal seawater pump.                       individual component sheets for specifications and details of air handlers,
Circulation connections between the condensing unit and chilled water lines                  controls and related parts.
are to be made with properly sized fittings and reinforced marine grade hose.                       In keeping with regulations set forth by the EPA, only certified
All hose connections are to be double clamped and ball valves should be                      technicians should perform service on, or make adjustments to, any
installed at chilled water inlet/outlet of each CHC unit and each air handler for            refrigerant circuits. However, this is not necessary when installing Chiller
ease of serviceability of the system. Insulate all hose and fittings airtight upon           Compact modules.
completion of leak tests to preventcondensation and capacity loss.
       The condensing unit chassis has an integral condensation drain pan for
removal of any water that may form. Secure a hose to this drain pan spud and
route it downward to a proper sump or overboard discharge outlet.
       Never install the air handlers in bilge or engine room areas and insure
that the selected location is sealed from direct access to bilge and/or engine
room vapors. Do not terminate condensate drain lines within three (3) feet of
any outlet of engine or generator exhaust systems, nor in a compartment




                          In the interest of product improvement, specifications and design as outlined herein are subject to change without prior notice.


                                                                                     Sold and Serviced by:

Dometic Corporation
2000 N. Andrews Ave. Ext. • Pompano Beach, FL 33069-1497 USA
• Phone: 954-973-2477 • Facsimile: 954-979-4414
P.O. Box 15299 • Richmond, VA 23227-0699 USA
• Phone: 804-746-1313 • Facsimile: 804-746-7248
Fleets Industrial Estate • 26 Willis Way • Poole, Dorset BH15 3SU, England
• Phone: +44(0)870 3306101 • Facsimile: +44(0)870 3306102
Email: sales@marineair.com • Website: www.marineair.com                                                                                            Revised: 01-06-04    L-2135
Product Description                                                                                                           Return to Menu
     Modular chilled water (MCW) units are available in capacities ranging from 24,000 to 180,000 BTU/H. MCW’s are available in single
phase or three phase, 50Hz or 60Hz, and all standard voltages (208, 230, 380, 460 VAC). Modules can be staged together to provide a larg-
er system, which is easilty retrofitted and serviced in the field. A maximum of six 15 ton stages could be configured for a total of 1,080,000
BTU’s or 90 tons. Each refrigerant circuit is hermetically sealed and factory pre-charged with R-22 (407C is optional). Each condensing unit
is monitored and protected with freeze controls, high limit switches, high and low aquastats, and timers. These condensing units can be
installed in any convenient location and are unaffected by vibration, moisture or ambient temperatures up to 140°F/60°C.

FEATURES
 Innovative Modular Design
 • Compact base design and footprint allows flexibility in
   space usage and layouts.
 • Lightweight aluminum construction provides corrosion
   resistant durability and enhances ease of installation.
 • Individual modules can be multiplexed to provide pre-
   cise capacity requirements for any application.
 • Factory assembled vertical and horizontal multiplexed
   configurations are available with frames, manifolds and
   controls.
 • Remote-mountable electrical box allows easy access
   for adjustments or service.

 High Efficiency Components
 • Matched components provide full rated capacity and
   assure maximum performance.
 • Bi-flow expansion valves balance systems between
   heat and cool modes.
 • Compact stainless steel brazed plate heat exchangers
   aredesigned for maximum efficiency using minimum
   space.
 • Condenser coil is constructed of spiral fluted cupron-
   ickel to provide maximum heat transfer and high corro-
   sion resistance.
 • Exclusive Digital Diagnostic Controller (DDC) monitors
   and protects the system through the use of aquastats,
   pressure switches, timers, freeze controls and high
   limit switches. All programmed to read out on an LED
   panel for immediate diagnosis.
 • Standard models operate at 60Hz and 50 Hz.
   However, there is a 17% reduction in capacity when
   operating at 50 Hz. (Full capacity 50 Hz only units are
   available upon request.)
 • Frames are welded with marine grade aluminum alloy,
   primed, then finished with a corrosion resistant epoxy.

 Quality Assurance
 • Each unit is pre-charged, load tested and calibrated at
   the factory.
 • Charge Guard ® protection provides sealed access
   ports, ensuring environmental protection and system                S                    E                     R           I            E            S
   integrity.
 • All units meet or exceed applicable ABYC and U.S.
   Coast Guard regulations, CE Directives and general
   Air Conditioning and Refrigeration Industry (ARI) stan-
   dards.


SPECIFICATIONS
Model Capacity             MCW24-*RC MCW36-*RC MCW48-*RC                     MCW60-*RC         MCW72-*RC        MCW90-*RC MCW120-*RC   MCW150-*RC MCW180-*RC
Cool BTU/H                   24,000    36,000    48,000                        60,000            72,000           90,000    120,000      150,000    180,000
Cool Kcal/H                  6,048      9,072    12,096                        15,120            18,144           22,680     30,240       37,800     45,360
Reverse Cycle BTU/H          26,400    39,600    52,800                        66,000            79,200           99,000    132,000      165,000    198,000
Reverse Cycle Kcal/H         6,653     9,979     13,305                        16,632            19,958           24,948     33,264       41,580     49,896
Est. Net Weight (lbs/kg)(1) 107/49     107/49    154/70                        176/80            180/82          310/141    390/177      480/218    600/272
Est. Ship Weight (lbs/kg)(1) 194/88    194/88   241/109                       263/119           267/121          410/186    500/227      600/272    715/329
* S= Scroll (available in 2-15ton), R= Reciprocating (available in 2-5 ton, 5 ton at 60 Hz only).
(1)
    Weights shown are for modules using scroll compressors rated at 60Hz, see MCW spec sheet for additional information.
                                                                                                                                            Return to Menu



                            Installation Guidelines for the MCW Chiller Series
        When choosing the proper model MCW Chiller condensing unit, pri-                    All circuit breakers and wire gauge must be sized according to marine
mary consideration should be given to calculated BTU loads and available            design standards. Only stranded tinned copper wire should be used. Route
power supply. Any special requirements (capacity modifications, voltages,           all wiring through the strain-relief connectors provided in the electrical boxes.
cycles, auxiliary heat, etc.) should be determined prior to ordering.               All equipment should be properly grounded and bonded using the lug provid-
        The location of the MCW Chiller condensing unit should be dry and           ed on each unit’s chassis. Electrical boxes are pre-wired for power and con-
accessible for service. Secure the condensing unit to a level horizontal            trol circuits. Electrical boxes can be remote mounted in a convenient location
surface with the supplied brackets. These brackets are designed to hold             with the standard five foot harness. Field wiring is required between remote
the weight of the equipment as well as handle any torsional movement. If            switch and unit electrical box.
a Marine Air Systems frame base is supplied and the chillers are already                    All chilled water condensing units use closed-refrigerant circuits, pre-
mounted, secure by drilling through the frame base at convenient loca-              charged with R-22. No additional refrigerant is required during the installation
tions. Do not stack units directly on top of each other. Each condensing            or at initial start-up and operation of the system. Refer to other individual com-
unit must be independently supported.                                               ponent sheets for specifications and details of air handlers, controls and relat-
        Reinforced marine grade hose is to be used for the seawater circuit. The    ed parts. In keeping with regulations set forth by the EPA, only certified tech-
hose is to be routed upwards from the thru-hull intake to the condensing unit       nicians should perform service on, or make adjustments to, any refrigerant cir-
to prevent air locks in the centrifugal seawater pump. Circulation connections      cuit.
between the condensing unit and chilled water lines are to be made with prop-               Never install your air handler in bilge or engine room areas. Insure that
erly sized fittings and reinforced marine grade hose. All hose connections are      the selected location is sealed from direct access to bilge and/or engine room
to be double clamped. Ball valves should be installed at chilled water inlet/out-   vapors. Do not terminate condensate drain lines within four (4) feet of any out-
let of each MCW unit and each air handler for overall serviceability of system.     let of engine or generator exhaust systems, nor in a compartment housing an
Insulate all hose and fittings properly upon completion of leak tests to prevent    engine or generator, nor in a bilge (vapors can travel up the drain line), unless
condensation and energy or capacity loss.                                           the drain is connected properly to a sealed condensate or shower sump pump.
        The chassis has an integral condensation drain pan for removal of any       Failure to comply may allow bilge or engine room vapors to mix with the air
water that may form. Secure a hose to the drain pan spud and route it down-         handlers return air and contaminate living areas.
ward to a proper sump or overboard discharge outlet.




Sold and Serviced By:
                                           MCW Chiller Physical Specifications
                                           Dometic Corporation - Marine Air Systems                                             Return to Menu

MODULES              Tons       Height     Height           Depth (1)    Depth (2)     Width        Width    Water Connect    Est. Net    Est. Gross
                               (module) (w/DDC box)        (base pan)    (overall)   (base pan)    (overall) Circ.   Sea      Weight       Weight
MCW24                 2      22.50/57.2 22.50/57.2         24.00/61.0   26.00/66.1   12.00/30.5   12.50/31.8 1.0"    1.0"     107/49       194/88
MCW36R                3      22.75/57.8 26.00/66.1         24.00/61.0   26.00/66.1   12.00/30.5   12.50/31.8 1.0"    1.0"     135/61       222/101
MCW36S                3      22.50/57.2 23.50/59.7         24.00/61.0   26.00/66.1   12.00/30.5   12.50/31.8 1.0"    1.0"     107/49       194/88
MCW48R                4      22.75/57.6 26.00/66.1         24.00/61.0   28.50/72.4   12.00/30.5   13.00/33.0 1.0"    1.0"     159/72       246/112
MCW48S 60Hz            4      22.50/57.2 23.75/60.3        24.00/61.0   29.75/75.6   12.00/30.5   13.00/33.0 1.0"    1.0"     154/70       241/109
MCW48S 50Hz            4      23.63/60.0 24.38/61.9        24.00/61.0   29.75/75.6   12.00/30.5   13.00/33.0 1.0"    1.0"     154/70       241/109
MCW60R                5      26.44/67.2 29.69/75.4         24.00/61.0   29.00/73.7   12.00/30.5   13.00/33.0 1.0"    1.0"     173/78       260/118
MCW60S 1Ph             5      23.63/60.0 26.88/68.3        24.00/61.0   28.75/73.0   12.00/30.5   13.00/33.0 1.0"    1.0"     176/80       263/119
MCW60S 3Ph             5      22.50/57.2 25.75/65.4        24.00/61.0   28.75/73.0   12.00/30.5   13.00/33.0 1.0"    1.0"     176/80       263/119
MCW72S 60Hz            6      22.50/57.2 25.75/65.4        24.00/61.0   28.75/73.0   12.00/30.5   13.00/33.0 1.0"    1.0"     180/82       267/121
MCW72S 50Hz            6      24.50/62.2 28.50/72.4        24.00/61.0   34.00/86.4   16.00/40.6   17.50/44.5 1.0"    1.0"     265/120      365/166
MCW90S               7.5     28.00/71.1 31.55/80.1         24.00/61.0   28.50/72.4   16.00/40.6   18.00/45.7 1.5"    1.5"     310/141      410/186
MCW120S               10      34.25/87.0 38.55/97.9        24.00/61.0   28.50/72.4   16.00/40.6   18.00/45.7 1.5"    1.5"     390/177      500/227
MCW150S              12.5    46.24/117.5 Box Remote        26.75/67.9   31.88/81.0   18.63/47.3   19.50/49.5 1.5"    2.0"     425/193      545/247
MCW180S               15     49.20/125.0 Box Remote        26.75/67.9   31.88/81.0   18.63/47.3   19.50/49.5 2.0"    2.0"     475/215      600/272
BASES                         Height (3)     Depth (4)      Width (4)
2-6 ton modules (5)
        2 stages               1.50/3.8      31.00/78.7   28.00/71.1
        3 stages               1.50/3.8      31.00/78.7   41.50/105.4
        4 stages               1.50/3.8      31.00/78.7   55.50/141.0
        5 stages               1.50/3.8      31.00/78.7   69.50/176.5
7.5-10 ton modules
        2 stages               3.00/7.6      35.50/90.2   36.00/91.4
        3 stages               3.00/7.6      35.50/90.2   53.50/135.9
        4 stages               3.00/7.6      35.50/90.2   71.50/181.6
        5 stages               3.00/7.6      35.50/90.2   88.50/224.8
12.5-15 ton modules
        2 stages               4.00/10.2    41.75/106.0 39.25/99.7
        3 stages               4.00/10.2    41.75/106.0 59.88/152.1
        4 stages               4.00/10.2    41.75/106.0 80.50/204.5
        5 stages               4.00/10.2    41.75/106.0 101.13/256.9
ELECTRIC BOXES (6)
(REMOTE MOUNTED)                Width        Height (7)     Depth
DDC 2-6 ton (1 per stage)     9.80/24.9      11.00/27.9   3.70/9.4
DDC 7.5-10 ton (1 per stg)    12.00/30.5     13.30/33.8   4.30/10.9
DDC 12.5-15 ton                            Dimensions TBD
CWMC-OTS
Standard "Off the Shelf"      12.00/30.5     14.00/35.6     4.63/11.7
    OTS with 1 extra pump     15.00/38.1     11.00/27.9     4.63/11.7
CWMC w/DDC
        2 stages              22.00/55.9     24.00/61.0     7.75/19.9
        3 stages (8)          22.00/55.9     24.00/61.0     7.75/19.9
        4 stages              30.00/76.2     24.00/61.0     7.75/19.9
        5 stages              35.00/88.9     24.00/61.0     7.75/19.9
Hydromatic (9)
   2 stages & 3 stages 3ph    24.00/61.0     22.00/55.9     6.75/17.1
   3 stages 1ph & 4 stages    30.00/76.2     22.00/55.9     6.75/17.1
        5 stages              30.00/76.2     24.00/61.0     6.75/17.1
        5 stages I.P.         34.00/86.4     24.00/61.0     6.75/17.1
NOTES:
Verify all critical dimensions with Dometic. All dimensions are given in inches/cm and all estimated weights are in pounds/kg (+/-10%).
Dimensions of frames and bases are +/- 1/4" (0.7cm). Dimensions of modules and manifolds are +/- 1/2" (1.3cm).
(1) For all modules, add 1.0" (2.5cm) to both front and back for mounting brackets.
(2) Overall depth includes mounting bracket in back (for 2-10 ton modules) and condenser tees in front (see diagram).
(3) Add module height and base height for overall height of a multi-staged chiller mounted on a base.
(4) Manifolds may extend up to 5.0" (12.7cm) in front of and up to 7.0" (17.8cm) to the side of base (see diagram).
(5) Use base dimensions of 7.5 ton modules for MCW 6 ton at 50Hz.
(6) Electric box sizes shown are for typical chillers, multiple stages of electric heat or additional pumps may increase box size.
(7) Add 1.0" (2.5cm) to top & bottom for mounting tabs, also allow a minimum clearance of 4.0" (10.2cm) on bottom for harnesses.
(8) If a three stage chiller has electric heat and/or 3-4 pumps, then use the four stage electric box size.
(9) If using frequency drives, specify the next size smaller box. If box is immersion protected (I.P.), specify the next size up.




In the interest of product improvement, the specifications and
design as outlined herein are subject to change without prior notice.                                                     L-2214 Revised: 10-20-03
               MCW and SCW Chiller R-22 Compressor Electrical Specifications
                       Dometic Corporation - Marine Air Systems            Return to Menu

         (1)                                    (2)                                (1)                                 (2)
 Model                          Electrical Data                            Model                     Electrical Data
                          FLA FLA               KVA KVA                                          FLA FLA               KVA    KVA
Tons   Type Volt/Hz/Ph    Cool RC LRA Cool RC MCC                         Tons Type Volt/Hz/Ph Cool RC LRA             Cool    RC    MCC
 2     Scroll 220/50/1      7.5 10.4 56.0        1.7 2.3 18.0              7.5 Scroll 220/50/3 18.4 23.3 231            4.0    5.1    47
 2     Scroll 220/50/3      8.1   9.3    70.0    1.8 2.0 15.0              7.5 Scroll 230/60/3 20.2 25.6 195            4.6    5.9    45
 2     Scroll 230/60/1      7.2   9.8    59.0    1.7 2.3 18.5              7.5 Scroll 380/50/3 10.9 13.7 100            4.1    5.2   24.2
 2     Scroll 230/60/3      5.3   6.9    55.0    1.2 1.6 12.0              7.5 Scroll 460/60/3 10.0 12.6 95             4.6    5.8    23
 2     Scroll 380/50/3      3.2   4.2    30.0    1.2 1.6    7.0            10 Scroll 220/50/3 24.0 30.9 273             5.3    6.8    64
 2     Scroll 460/60/3      2.5   3.2    22.4    1.2 1.5    5.5            10 Scroll 230/60/3 25.6 32.5 239             5.9    7.5    58
 2     Recip 220/50/1      9.6 11.8 65.0         2.1 2.6 19.5              10 Scroll 380/50/3 13.9 17.9 110             5.3    6.8   27.5
 2     Recip 220/50/3      6.6    8.2    60.0    1.5 1.8 14.0              10 Scroll 460/60/3 12.9 16.3 125             5.9    7.5   26.9
 2     Recip 230/60/1       8.2 10.9 66.0        1.9 2.5 20.2             12.5 Scroll 220/50/3 33.2 42.9 315            7.3    9.4   70.9
 2     Recip 230/60/3       6.0   7.4    48.0    1.4 1.7 13.0             12.5 Scroll 230/60/3 28.0 36.6 245            6.4    8.4    66
 2     Recip 380/50/3      3.2    4.1    30.0    1.2 1.6    7.5           12.5 Scroll 380/50/3 19.2 24.8 179            7.3    9.4    37
 2     Recip 460/60/3      3.0    3.7    30.0    1.4 1.7    6.0           12.5 Scroll 460/60/3 14.0 18.3 125            6.4    8.4   27.5
                                                                             (3)
 3     Scroll 220/50/1     11.1 15.2 97.0        2.4 3.3 24.0             15     Scroll 230/60/3 36.4 47.2 425          8.4   10.9    75
 3     Scroll 220/50/3      8.5 10.6 95.0        1.9 2.3 19.4             15 (3) Scroll 380/60/3 22.0 28.6 239          8.4   10.9    51
 3     Scroll 230/60/1     12.1 15.9 100.0 2.8       3.7 25.0              15 Scroll 460/60/3 18.2 23.6 187             8.4   10.9    37
 3     Scroll 230/60/3      7.6   9.7    77.0    1.7 2.2 16.0             (1)
 3     Scroll 380/50/3      4.4   5.5    41.0    1.7 2.1 10.0               Cooling capacity is given at performance rating
 3     Scroll 460/60/3      3.8   4.9    39.0    1.7 2.3    8.0           condensing temperature and 35F (2C) evaporating t
 3     Recip 220/50/1      15.5 18.7 100.0 3.4       4.1 33.0             Reverse cycle heating capacity is given at perfor
 3     Recip 220/50/3      10.2 12.8 90.0        2.2 2.8 24.0             130F (54C) condensing temperature and 45F (7C) ev
 3     Recip 230/60/1      12.5 15.9 87.0        2.9 3.7 27.5             temperature.
 3     Recip 230/60/3      7.8    9.6    70.0    1.8 2.2 18.0
                                                                          (2)
 3     Recip 380/50/3      5.1    6.4    45.0    1.9 2.4 13.0               Compressor electrical data are rated at Volt/H
 3     Recip 460/60/3      3.9    4.8    35.0    1.8 2.2    8.3           are nominally rated for the following operation c
 4     Scroll 220/50/1     15.4 21.7 150.0 3.4       4.8 40.0             230/60/1 compressors are rated for 208-230/60/1 o
 4     Scroll 220/50/3     12.3 15.0 139.0 2.7       3.3 29.0             220/50/1 compressors are rated for 220-240/50/1 o
 4     Scroll 230/60/1     13.7 19.5 137.0 3.2       4.5 31.0             230/60/3 compressors are rated for 208-230/60/3 o
 4     Scroll 230/60/3      9.9 12.7 91.0        2.3 2.9 23.0             220/50/3 compressors are rated for 200-220/50/3 o
 4     Scroll 380/50/3      7.1   8.7    58.6    2.7 3.3 14.0             380/50/3 compressors are rated for 380-420/50/3 o
 4     Scroll 460/60/3      5.5   6.5    50.0    2.5 3.0 11.0
 4     Recip 220/50/3      12.3 15.1 106.0 2.7       3.3 25.0             Although compressors are rated for a certain volt
 4     Recip 230/60/1      17.1 21.4 118.0 3.9       4.9 36.4
                                                                          frequency, they can usually be run at +/-10% of t
 4     Recip 230/60/3      10.0 12.6 90.0        2.3 2.9 24.0
                                                                          here are the exceptions:
 4     Recip 380/50/3      5.9    7.2    53.0    2.2 2.7 12.5
                                                                          Comp;   VAC;      Freq; Phase; +/- Rule;   VAC Ra
 4     Recip 460/60/3      5.0    6.3    45.0    2.3 2.9 13.0
                                                                          Scroll;   208-230; 60Hz; 1Ph;     -5/+10%;   198-
 5     Scroll 220/50/1    Use 230/60/3 Compressor w/Freq Drive
                                                                          Scroll;   220-240; 50Hz; 1Ph;     -5/+10%;   209-
 5     Scroll 220/50/3     12.5 18.4 172.0 2.8       4.0 29.0
 5     Scroll 230/60/1     18.2 25.3 169.0 4.2       5.8 45.0
 5     Scroll 230/60/3     13.3 16.7 128.0 3.1       3.8 29.0             For more information regarding compressor vol
 5     Scroll 380/50/3      6.8   8.9    67.0    2.6 3.4 14.0             notice FNR#192-B3-M on the Dometic Customer News
 5     Scroll 460/60/3      6.7   8.4    63.0    3.1 3.9 14.0
                                                                          (3)
 5     Recip 230/60/1      22.8 28.1 178.0 5.2       6.5 47.0               The 15-ton 230V & 380V compressors are 60hz
 5     Recip 230/60/3      14.0 17.0 124.0 3.2       3.9 32.0             use of frequency drives to run on 50hz power. In
 5     Recip 460/60/3      7.0    8.5    62.0    3.2 3.9 16.0             amps by 5% for 220V operation.
 6     Scroll 220/50/3     17.2 20.7 196.0 3.8       4.6 40.0
 6     Scroll 230/60/3     14.0 18.4 156.0 3.2       4.2 29.0
 6     Scroll 380/50/3      9.4 11.4 90.0        3.6 4.3 20.0
 6     Scroll 460/60/3      7.0   9.2    75.0    3.2 4.2 14.0




  In the interest of product improvement, the specifications and
  design as outlined herein are subject to change without prior notice.                                   L-2309 Revised: 11-05-03
FEATURES                                                                                                                  Return to Menu

High Quality Components
• Seawater side of condenser coils are made of
  cupronickel, and refrigerant shells are copper
  (NOT steel) for maximum efficiency and corrosion
  resistance.
• Compact copper brazed, stainless steel plate
  exchangers are designed for maximum efficiency
  in a confined space.
• Computer matched components provide maxi-
  mum cooling/heating capacity.
• All chillers use thermal expansion valves (TXV).
  Unlike the capillary tubes, TXVs automatically
  adjust to changing load requirements to maintain
  optimum performance.
• Each stage is individually protected by a circuit
  breaker, flow switch, freeze protection, water tem-
  perature high limit, high pressure refrigerant
  switch, and low pressure refrigerant switch. These
  safeties are in addition to the compressor thermal
  overload.

Innovative Design
• Compact base design provides flexibility in engine
  room layouts.
• Multiplexed modules offer precise BTU require-
  ments for any application.
• Lightweight, aluminum construction enhances
  ease of installation while providing corrosion
  resistant durability.
• Complete control circuit provides multiple failsafes
  for system protection.
• Vertically mounted units are available.

Individual Refrigerant Circuits
• Redundant design assures cooling if one circuit
  malfunctions.

Serviceability
• All compressors accessed from front of condens-
  ing unit ensuring easy change out.

Quality Assurance
• Each unit is pre-charged, load tested and calibrat-
  ed at the factory
• Charge Guard ® protection provides sealed access
  ports, ensuring environmental protection and sys-          S                 E                R                I               E                 S
  tem integrity.
• All units meet or exceed applicable ABYC and
  U.S. Coast Guard regulations.

Product Description
    The staged Chilled Water Units are available in capacities ranging from 48,000 to 900,000 BTU/H. SCWs are available in single phase or three
phase, 50Hz or 60Hz, and all standard voltages (208, 230, 380, 460 VAC). Multiple compressors and refrigerant circuits are incorporated to provide
minimal power consumption versus load demands, as well as redundancy throughout the unit. Each refrigerant circuit is hermetically sealed and fac-
tory pre-charged with R-22. Each condensing unit is monitored and protected with freeze controls, high limit switches, high and low aquastats, timers
and on-board fuses or breakers.
    All access ports to the refrigerant system are protected with CHARGE GUARD ®, a factory installed seal, ensuring system integrity from shipping
through final installation.
Condenser coils are constructed with cupro-nickel to provide high corrosion resistance. Unique stainless steel evaporator plates are designed for max-
imum efficiency of heat transfer. SCW’s can be built with circulation pump mounted in the chiller frame. Frames are welded with marine grade aluminum
alloy, primed, then finished with a corrosion resistant epoxy.
    These condensing units can be installed in any convenient location and are highly resistant to vibration, moisture or ambient temperatures up to
140°F/60°C. Units meet or exceed Coast Guard regulations.
                                                                                                                                         Return to Menu


                                     Staged chilled water - scw series




Electrical Box
The drip-proof electric box is available with custom harness lengths to fit each application.
A) Chilled Water Master Controller (CWMC) Display.
B) CWMC circuit board.
C) Digital Diagnostic Controller (DDC).
Please reference the Chilled Water Master Controller specifications sheet for more details.

D) Data plates and wiring diagram.
E,F,G) All compressors, pumps and heaters are protected by individual (E) circuit breakers, (F)controlled by contactors, and (G) three phase pumps
are also protected by overloads.
H) All wiring from the electric box to the chiller components is connected via feed through terminals for easy troubleshooting.

Heating
     Heating capabilities can be provided through a variety of choices, depending upon each vessel’s requirements. Reverse cycle heating provides
the best, most efficient heat, but requires seawater temperature>40˚F(5˚C). Using the com-             Recommended heater kw & stages for EH chillers
pressor circuits, heat is extracted from the seawater and transferred into the interior spaces
                                                                                                 Tons per    -------------Number of compressors---------------
with high efficiency. Reverse cycle is approximately four times more efficient than electric      stage 2 stages           3 stages     4 stages         5 stages
heat. Electric heating provides adequate capacities for vessels operating in all waters by 2            6kw/1stages 6kw/1stages 12kw/2stages 12kw/2stages
high quality immersion heating elements in or out of the water. The circulation water is 3              6kw/1stages 10kw/1stages 12kw/2stages 18kw/3stages
heated and the heat is then transferred, via the water, into the interior spaces. Electric heat- 4     10kw/1stages 12kw/2stages 18kw/3stages 20kw/2stages
                                                                                                 5     12kw/2stages 18kw/3stages 24kw/4stages 30kw/3stages
ing capacities are limited by the power (amperage) available for operation. Auxiliary heating 6        12kw/2stages 18kw/3stages 24kw/4stages            30kw/3s
is available through the use of electric heating elements installed in air handlers throughout 7.5        20kw/2s          26kw/2s      30kw/3s          40kw/4s
the vessel. Each of these elements provides 1-3 KW of heat that can be operated inde- 10                  20kw/2s          30kw/3s      40kw/4s          52kw/4s
                                                                                                 12.5     26kw/2s          39kw/3s      45kw/3s          60kw/4s
pendently or in combination with the central heating circuit to provide heat and maintain 15              30kw/2s          45kw/3s      60kw/4s          80kw/4s
temperatures inside the vessel.

Specifications
Capacity                         8                 9                  10                 12                  12                 15                 16
Number of stages                 2                 3                   2                  3                   4                  3                  4
Cool (BTU/H)/(Kcal/H)      96,000/24,192     108,000/27,216     120,000/30,240     144,000/36,288      144,000/36,288     180,000/45,360     192,000/48,384
R.C. (BTU/H)/(Kcal/H)      105,600/26,611    118,000/29,736     132,000/33,264     158,400/39,917      158,000/39,917     198,000/49,896     211,200/53,222
Est. Weight (lbs/kg)          575/261           650/295            625/284            775/352             850/386            875/397            950/431

Capacity                         20                25                 24                 30                  15                22.5                30
Number of Stages                  4                 5                  4                  5                   2                 3                   4
Cool (BTU/H)/(Kcal/H)      240,000/60480     300,000/75,600     288,000/84,383     360,000/114,540     180,000/52,740     270,000/79,100     360,000/114,540
R.C. (BTU/H)/(Kcal/H)      264,000/66,528    330,000/83,160     316,800/92,820     396,000/116,030     198,000/58,000     297,000/87,000     369,000/116,030
Est. Weight (lbs/kg)         1,200/544         1,450/658          1,160/527           1,450/658           780/355           1,140/518           1,520/691

Capacity                        30              40              50              60                          75
Number of Stages                 3               4               5               5                           5
Cool (BTU/H)/(Kcal/H)     360,000/114550 480,000/140,600 600,00/175,800 720,000/210,900               900,000/263,625
R.C. (BTU/H)/(Kcal/H)     369,000/116,030 528,000/154,700 660,000/193,400 792,000/231,990             990,000/289,990
Est. Weight (lbs/kg)         1,230/559       1,640/745       2,050/932       2,200/100                  2,400/1,090


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FEATURES
 Unique Compact Design
 •   Large plenum chamber for maximum capacity.
 •   Optimum efficiencies in heat and cool with 3-way valve
     that assures proper water flow.
 •   Electric heating option.

 Blower Assembly Module
 •   High velocity fan assembly.
 •   Ductable, rotatable blowers offer installation flexibility.
 •   Permanent split capacitor motors reduce amperage
     draw.
 •   Completely insulated with closed cell insulation.

 Condensate Drain Pan
 •   Dual threaded drain connections provided for
     watertight hose fittings.
 •   Drain pan is enclosed and fully insulated.
 •   Optional positive flow drain pans provide a shallow
     sump for enhanced condensation removal.

 Quality Assurance
 •   System matched components assure full BTU rating.
 •   All units meet or exceed applicable ABYC and U.S.
     Coast Guard regulations, CE Directives and general
     Air Conditioning and Refrigeration Industry (ARI)
     standards.




SPECIFICATIONS

Model (1)                                AH6K-DT2            AH9K-DT2        AH12K-DT2               AH16K-DT2             AH18K-DT2             AH24K-DT2

Capacity (BTU/H)/(Kcal/H)                6,000/1,512         9,000/2,268     12,000/3,024             16,000/4,032          18,000/4,536          24,000/6,048

Voltage(VAC)                               115/230             115/230          115/230                  115/230               115/230                  230
  Cycle                                     50/60               50/60            50/60                    50/60                 50/60                  50/60
  Phase                                       1ø                  1ø               1ø                       1ø                    1ø                    1ø
  Amperage                                  1.8/0.6             1.4/0.7          1.4/0.7                  2.2/1.0               2.2/1.0                 1.2

Optional Electric Heat (KW) (2)               1                   1                1                        1                    1.5                    1.5
Total Amps with Heat                       10.5/5.0            10.1/5.1         10.1/5.1                 10.9/5.4              15.2/7.5                 7.7

GPM/(Liters/Min.)                           1.5/5.7                2.3/8.7      3.0/11.4                 4.0/15.1              4.5/17.0              6.0/22.7

CFM/(M 3/Hr.)                              200/340             300/510          400/680                  500/850               530/901              700/1,190

Dimensions (in/cm) (3)
  Depth                             11.50/29.21   13.15/33.40                 13.15/33.40        14.00/35.56      15.50/39.37                  21.00/53.34
  Width                             13.25/33.66   21.50/54.61                 21.50/54.61        21.50/54.61      23.50/59.69                  23.50/59.69
  Width PF*(4)                      19.00/48.26   23.25/59.06                 23.25/59.06        23.25/59.06      25.00/63.50                  25.50/64.77
  Height                            12.30/31.24   13.25/33.66                 14.10/35.81        17.00/43.18      17.00/43.18                  19.50/49.53
    Supply Air Outlet-Duct Dia.       5.0/12.7      5.0/12.7                    6.0/15.2           7.0/17.8          7.0/17.8                     8.0/20.3
    Return Air Inlet-Sq. Surface Area 88/568        98/632                      140/903           168/1,084         168/1,084                   280/1,807
    Water Inlet/Outlet               ...........................             0.5” FPT brass with 0.625” HB brass . . . . . . . . . . . . . . . . . . . . . . . . .
    Condensate Drains                ............................            2 each @ 0.5” FPT with 0.625” HB . . . . . . . . . . . . . . . . . . . . . . . . . .

Weight (lbs/kg)                           20.0/9.1           27.0/12.3          27.0/12.3              35.0/15.9        37.0/16.8           50/22.7
(1)
    “Z” at the end of the model number designates 230V, i.e., AH12K-DT2 designates 115V; AH12K-DT2Z designates 230V.
(2)
    Optional electric heat chill chasers are available, addition of heating elements will slightly increase the width and weight of the unit.
(3)
    Depth dimension on the AH24K-DT2 includes blower motor overhang, unit depth dimension is 15.75” .
(4)
    Positive flow (PF) drain pans are available upon request.
                                                                                                                                                            Return to Menu


                     Installation Guidelines for Draw Thru Series Air Handlers
        When choosing the proper model Draw Thru Air Handler, primary consider-            Insure that the selected location is sealed from direct access to bilge and/or engine
ation should be given to calculated BTU loads and available power supply.                  room vapors. Do not terminate condensate drain lines within four (4) feet of any out-
        AH-DT2 series air handlers are ductable units, designed to be installed low        let of engine or generator exhaust systems, nor in a compartment housing an engine
in cabin areas (under berths, lockers, etc.) and ducted to high supply air grilles.        or generator, nor in a bilge (vapors can travel up the drain line), unless the drain is
These units have rotatable blower-motor assemblies, providing flexibility to fit spe-      connected properly to a sealed condensate or shower sump pump. Failure to com-
cific space requirements and allowing for proper duct work installations.                  ply may allow bilge or engine room vapors to mix with the air conditioners return air
Combinations of remote mounted boxes may be used to supply air into more than              and contaminate living areas.
one area from a single unit.                                                                        Both condensation drain lines must be connected to the air handlers’ two (2)
        Securely fasten the AH-DT2 unit to a solid, level surface, using the four (4)      drain pan spuds using reinforced flexible hose (5/8”) and clamps. The drains may
mounting rails provided in the base. Rotate and secure the blower, if necessary, to        be teed together, providing there is a minimum drop of 2” from the drain pan to the
its proper position to provide the most direct routing of the ducting to transitions and   tee fitting. The drain line must be routed downwards to a proper sump or overboard
supply air grilles. Route all ducting to be as smooth and straight as possible. Trim       discharge. Properly secure the drain lines to prevent movement or lifting during ves-
off excess ducting before making final connections. Secure the ducting every 48”           sel operation. Check the drains upon completion by pouring two (2) quarts of water
(min.) to prevent movement while the vessel is under operation.                            into the drain pan. Note: Condensation drain lines may need to be insulated
        The return air grilles must be properly sized and located to allow adequate        when located in high heat load areas to prevent line sweating, which could
return air flow to the units. A clip-on type return air filter is supplied standard with   cause water damage.
each grille. These filter assemblies should be checked periodically and cleaned                     Water connections from the circulation circuit to the air handler are to be rein-
when necessary. Return air grilles should not be located in such a way as to allow         forced flexible hose and clamps. Attach the hose to the 5/8” hose barb fittings on
the supply air stream to blow directly into its opening. This will cause “short cycling”   the water inlet and outlet of the unit. All hose, pipe and connections must be insu-
of the unit, resulting in poor performance.                                                lated properly to prevent condensation. Use approved closed cell tube insulation
        The supply air grilles must be sized and located to allow for proper air circu-    (1/2” minimum) on the hose, and foam tape on the fittings, 5 or 6 wraps.
lation within the cabin area(s). Grille locations close to the ceiling or directed                  All wiring must be sized according to marine design standards. Only strand-
upwards provide for the best air circulations. Under sized grilles and crushed or          ed, tinned copper wire is to be used. All electrical connections to the air handler are
kinked duct work will result in poor or inadequate air performance.                        to be made within the electrical junction boxes provided on the assembly. All units
        Never install your air conditioner air handler in bilge or engine room areas.      must be properly grounded.




Sold and Serviced By:
                                                                                                                                                                                                         Return to Menu
FEATURES
      Unique Compact Modular Design
      • Mounting footprint provides greater installation flexibility.
      • Easy disassembly for access to components.
      • Large plenum chamber for maximum capacity.
      • Optimum efficiencies in heat and cool modes, with 3-way
        valve that assures proper water flow.
      • Electric heating option.(1)

      Blower/Coil Assemblies
      • Efficient, centrifugal blowers with shaded pole motors.(2)
      • Thermoplastic mounting rings enable easy installation of
        ducting or transition boxes.
      • Coils with enhanced fins and cross-hatched “Outokumpu”TM
        brand tubing for maximum efficiency.
      • Ductable, rotatable blowers offer installation flexibility.
      • Insulated with closed cell insulation.

      Condensate Drain Pan
      • Unique angled drain pan enhances removal of condensation.
      • Dual threaded drain connections provide for watertight hose
        fittings.
      • Drain pan is fully insulated to prevent sweating.

      Quality Assurance
      • Each unit is test run in all operating modes and leak checked.
      • All units meet or exceed applicable ABYC and U.S.
        Coast Guard regulations, CE Directives and general Air
        Conditioning and Refrigeration Industry (ARI) standards.




SPECIFICATIONS
Model                                    AH4K-FD(3)                 AH6K-FD                   AH9K-FD                  AH12K-FD               AH16K-FD                  AH18K-FD                 AH24K-FD(2)
Capacity (BTU/H)/(Kcal/H)                4,000/1,008                 6,000/1,512                9,000/2,268               12,000/3,024 16,000/4,032                   18,000/4,545               24,000/6,048
Voltage (VAC)(4)                          ............................................................................115 VAC - 230 VAC.........................................................................
Cycle/Phase (Hz/ø)                        .................................................................................50/60 Hz - 1ø..............................................................................
Amperage (FLA)
  115V                                         1.1                        2.0                       2.9                      2.9                      3.3                      3.3                       4.1
  230V                                         0.6                        0.9                       1.4                      1.4                      1.8                      1.8                       0.8
Amps w/Heat(1)
   115V                                        N/A                       10.7                      11.6                     11.6                     12.0                     16.3                      17.1
   230V                                       N/A                       5.3                       6.0                       6.0                      6.2                      8.3                      7.7
GMP/(Liters/min.)                           1.0/3.8                   1.5/5.7                   2.3/8.7                  3.0/11.4                 4.0/15.1                 4.5/17.0                 6.0/22.7
Air Flow (CFM)/(M3/HR)                     150/255                    200/340                   300/509                  400/679                   500/850                 530/900                  700/1190
Dimensions (in/cm)
   D (Depth)                              10.0/25.4                  13.7/34.8                  13.3/33.8         13.5/34.3       14.8/37.6             15.5/39.4                   17.8/45.2
   M (Motor overhang)                      3.0/7.6                     2.3/5.8                    2.8/7.1           2.6/6.6         3.0/7.6               3.0/7.6                    4.0/10.2
   W (Width)                              13.9/35.3                  13.9/35.3                  19.7/50.0         19.7/50.0       19.8/50.3             21.5/54.6                   23.5/59.7
   H1 (Height to blower)(5)               11.2/28.4                  12.2/31.0                  13.2/33.5          13.6/34.5      15.5/39.4             15.5/39.4                   18.5/47.0
   H2 (Height to evap)                    10.9/27.7                  10.9/27.7                  12.2/31.0         12.2/31.0       15.3/38.9             15.3/38.9                   17.3/43.9
   Supply Duct Diameter                    4.0/10.2                   5.0/12.7                   6.0/15.2          6.0/15.2        7.0/17.8              7.0/17.8                    8.0/20.3
Water Inlet & Outlet                       .......................................................... 0.5” FPT brass with 0.625” HB brass .......................................................
Condensate Drains                          ........................................................... 2 each @ 0.5” FPT with 0.625” HB .........................................................
Weight (lbs/kg)                              14/6.3                   18.6/8.4                 23.0/10.4                23.0/10.4                29.0/13.2                34.0/15.2                 43.0/19.5
(1)
       Optional electric heat chill chasers are available in 1kw (AH6-16FD) or 1.5kw (AH18-24FD), not available on AH4K-FD. Overall weight of unit increases with heat.
(2)
       AH24K utilizes a PSC blower motor.
(3)
       AH4K blower can be rotated vertical or horizontal only.
(4)
       “Z” at the end of the model number designates 230V (ie AH12KFD designates 115V; AH12KFDZ designates 230V).
(5)
       H1 is measured to highest point of blower duct ring when blower is horizontal as in the photo and drawing. Blower can be rotated so that the evaporator is the highest
       point on the air handler (dimension H2).
                                                                                                                                                                                                                         L-2142
                                                                                                                                                            Return to Menu


                      Installation Guidelines for Flex Duct Series Air Handlers
        When choosing the proper model Flex Duct Air Handler, primary                       performance.
consideration should be given to calculated BTU loads and available                                The supply air grille(s) must be sized and located to allow for
power supply.                                                                               proper air circulation within the cabin area(s). Grille locations close to
        AH-FD series air handlers are ductable units, designed to be                        the ceiling or directed upwards provide for the best air circulation.
installed low in cabin areas (under berths, lockers, etc.) and ducted to                    Under-sized grilles and crushed or kinked duct work will result in poor or
high supply air grilles. These units have rotatable blower-motor assem-                     inadequate performance.
blies, providing flexibility to fit specific space requirements and allowing                       Connect a 5/8” reinforced flexible condensate hose to the drain
for proper duct work installations. Combinations of transition boxes may                    pan spud furthest aft. Two drains may be teed together, providing there
be used to supply air into more than one area from a single unit.                           is a minimum drop of 2” from the drain pan to the tee fitting. The drain
        Securely fasten the AH-FD to a solid, level surface, using the                      line must be routed downward to a proper sump or overboard discharge.
mounting hardware provided. Be sure that the blower motor has at least                      Properly secure the drain lines to prevent movement during vessel
3” inches of space in front of it to allow for proper air flow. Rotate and                  operation. Check the drains upon completion by pouring two quarts of
secure the blower, if necessary, to its proper position to provide the most                 water into the drain pan. Note: Condensation drain lines may need
direct routing of the ducting to transitions and supply air grilles. Route                  to be insulated when located in high heat load areas to prevent line
all ducting as smooth and straight as possible. Trim off excess ducting                     sweating, which could cause water damage.
before making final connections. Secure the ducting every 48” (min.) to                            CAUTION: Never install your air handler in the bilge or engine
prevent movement while the vessel is under operation.                                       room areas. Insure that the selected location is sealed from direct
        The return air inlets must be properly sized and located to allow                   access to bilge and/or engine room vapors. Do not terminate con-
adequate return airflow to the units. A return air filter is supplied                       densate drain line within three (3) feet of any outlet of engine or
standard with each unit. These filter assemblies should be checked                          generator exhaust systems, nor in a compartment housing an
periodically and cleaned when necessary. The return air grille should                       engine or generator, nor in a bilge, unless the drain is connected
not be located in such a way as to allow the supply air stream to blow                      properly to a sealed condensate or shower sump pump.
directly into its opening. This will cause “short cycling” of the unit, resulting in poor




                         In the interest of product improvement, specifications and design as outlined herein are subject to change without prior notice.

                                                                                     Sold and Serviced by:

Dometic Corporation
2000 N. Andrews Ave. Ext. • Pompano Beach, FL 33069-1497 USA
• Phone: 954-973-2477 • Facsimile: 954-979-4414
P.O. Box 15299 • Richmond, VA 23227-0699 USA
• Phone: 804-746-1313 • Facsimile: 804-746-7248
Fleets Industrial Estate • 26 Willis Way • Poole, Dorset BH15 3SU, England
• Phone: +44(0)870 3306101 • Facsimile: +44(0)870 3306102
Email: sales@marineair.com • Website: www.marineair.com                                                                                      Revised: 01-06-04       L-2142
                                                                                                                                                                                                       Return to Menu
FEATURES
      Modular Symmetrical Design
      •     Large plenum chamber for maximum capacity.
      •     Optimum efficiencies in heat and cool with 3-way valve that
            assures proper water flow.
      •     Electric heating option.

      Blower Assembly
      •     Quickly converts between a vertical or a horizontal application.
      •     Extremely quiet diffused air delivery.

      Condensate Drain Pan
      •     Dual drain connections enhance removal of collected
            condensation.
      •     Drain pan is a full 2” high and is completely insulated.

      Quality Assurance
      •     System matched components assure full BTU rating.
      •     All units meet or exceed applicable ABYC and U.S. Coast
            Guard regulations, CE Directives and general Air Conditioning
            and Refrigeration Industry (ARI) standards.




SPECIFICATIONS
Model (1)                                          AH6K-BT                    AH9K-BT                       AH12K-BT                       AH16K-BT                    AH18K-BT                    AH24K-BT

Capacity (BTU/H)/(Kcal/H)                         6,000/1,512                 9,000/2,268                  12,000/3,024                   16,000/4,032                18,000/4,536                24,000/6,048

Voltage(VAC)                                       . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115/230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Cycle (2)                                      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Phase                                          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1ø . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Amperage                                        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.8/0.8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GPM/(Liters/Min.)                                    1.5/5.7                     2.25/8.5                      3.0/11.4                       4.0/15.1                    4.5/17.0                    6.0/22.7

CFM/(M3/Hr.)                                        200/340                      300/510                       400/680                        500/850                    600/1,020                   700/1,190

Dimensions (in/cm) (3)
  A (Width)                                         23.5/59.7                    23.5/59.7              30.0/76.2           30.0/76.2                42.5/108.0                   42.5/108.0
  B (Depth)                                         19.8/50.2                    19.8/50.2              19.8/50.2           19.8/50.2                 19.8/50.2                    19.8/50.2
  C (Height)                                        10.0/25.4                    10.0/25.4              10.0/25.4           10.0/25.4                 10.0/25.4                    10.0/25.4
  D (Supply Air Outlet)                             17.0x7.0/                    17.0x7.0/              25.0x7.0/           25.0x7.0/                 37.0x7.0/                     37.0x7.0/
                                                   43.2x17.8                    43.2x17.8               63.5x17.8           63.5x17.8                 94.0x17.8                    94.0x17.8
            Return Air Inlet-Sq. Surf. Area          120/774                      120/774               170/1,097           170/1,097                 260/1,677                    260/1,677
            Water Inlet/Outlet                      . . . . . . . . . . . . . . . . . . . 0.5” FPT brass with 0.625” HB brass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
            Condensate Drains                      . . . . . . . . . . . . . . . . . . . . . . . 2 @ 0.625” ø x 2” long pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Weight (lbs/kg)                                     30.0/13.6                   30.0/13.6                     38.0/17.3                      38.0/17.3                   45.0/20.5                   45.0/20.5

Optional Heating Elements (4)
  Max. Heater Size                                   1.0KW                       1.5KW                         2.0KW                          2.5KW                      3.0KW                       3.0KW
  Rating (BTU/H)(Kcal/H)                           3,415/861                  5,123/1,291                   6,830/1,721                    8,538/2,152                10,245/2,582                10,245/2,582
  Amperage (115/230VAC)                              8.6/4.3                    13.0/6.5                      17.4/8.7                      21.8/10.9                   26.0/13.0                   26.0/13.0
(1)
          “Z” at the end of the model number designates 230V, i.e., AH12K-BT designates 115V; AH12K-BTZ designates 230V.
(2)
          Full capacity 50 cycle units available upon request.
(3)
          BT Series available in vertical or horizontal configuration. Reverse depth and height figures above for vertical configuration. Specify “H” or “V”.
(4)
          Optional elements may be mounted internally in the blower discharge stream(s). Each heating element is protected with a thermal overload and a fuse link.
          Smaller elements may be applied to all units except the AH6K-BT units.
                                                                                                                                             Return to Menu


                       Installation Guidelines for Blow Thru Series Air Handlers
        When choosing the proper model Blow Thru Air Handler, primary con-           “short cycling” of the unit, resulting in poor performance.
sideration should be given to calculated BTU loads and available power sup-                 Both condensation drain lines must be connected to the air handlers’
ply.                                                                                 two (2) drain pan spuds using reinforced flexible hose (5/8”) and clamps. The
        Blow Thru Series air handlers are non-ductable units, designed to be         drains may be teed together, providing there is a minimum drop of 2” from he
installed high in a cabin area for proper air circulation. These units can be        drain pan to the tee fitting. The drain line must be routed downwards to a prop-
reversed between horizontal and vertical configurations to fit specific space        er sump or overboard discharge. Properly secure the drain lines to prevent
requirements.                                                                        movement or lifting during vessel operation. Check the drains upon comple-
        Blow thru units must be located in such a way as to deliver air directly     tion be pouring two (2) quarts of water into the drain pan. Note:
into a cabin area. They must be located against the inside of a bulkhead or          Condensation drain lines may need to be insulated when located over-
partition common to the cabin to be conditioned. If the air handler cannot be        head in lockers to prevent sweating of the line, which could cause water
flush mounted against the bulkhead, a short, sealed plenum chamber can be            damage.
used, but must be equal or slightly larger than the fan coil surface. All units             Water connections from the circulation circuit to the air handler are to be
should be accessible for service.                                                    reinforced flexible hose and clamps. Attach the hose to the 5/8” hose barb fit-
        Securely fasten the blow thru air handler using the four (4) mounting        tings on the water inlet and outlet of the unit. All hose, pipe and connections
grommets located in the upper corners of the mounting plate. The supply air          must be insulated properly to prevent condensation. Use approved closed cell
outlet must be equal in surface area and dimensions of the fan coil. See spec-       tube insulation (1/2” minimum) on the hose, and foam tape on the fittings (5-
ifications for individual models. The return air inlet is to be properly sized and   6wraps).
located underneath, alongside, or behind the air handler, dependent on its                  All wiring must be sized according to marine design standards. Only
application. All return air grilles must have removable filters to trap dust or      stranded, tinned copper wire is to be used. All electrical connections to the air
other airborne particles. Return air grilles should not be located in such a way     handler are to be made inside the electrical junction boxes provided on the
as to allow the supply air stream to blow directly into them. This will cause        assembly. All units must be properly grounded.




                  1.   Blower Assembly (horizontal)        7. Water Valve
                  2.   Filler Plate                        8. Water Inlet
                  3.   Blower Assembly (vertical)          9. Water Outlet
                  4.   Electrical Junction Box             10. Mounting Plate With Grommets
                  5.   Condensation Drain Fittings (2)
                  6.   Condensation Drain Pan

Sold and Serviced By:
FEATURES                                                                                                                                                                              Return to Menu
      Modular Design
      • White aluminum construction.
      • Modules can be installed in either vertical or
        horizontal configurations.
      • Flexible design allows for alternate supply and
        return air locations.
      • Pre-plumbed right AND left, use either/or!

      Blower Assembly Side
      • Permanent split capacitor motors for quiet, efficient
        operation.
      • Fire retardant plastic blower housings.
      • Framed filters are made of washable, fire retardant
        materials. Filters are attached to unit by stainless
        steel, “snapping“ mount clips.
      • Optional auxiliary heating elements for additional
        heat capacity.
      Fan Coil Assembly Side
      • Enclosed insulated drain pan with threaded, dual
        drain connections for complete condensate
        removal.
      • Fully insulated cabinetry.
      • Internal 3-way valve assembly, with air bleeder.
      Quality Assurance
      • System matched components assure full BTU
        rating.
      • All units meet or exceed applicable ABYC and U.S.
        Coast Guard regulations, CE Directives and
        general Air Conditioning and Refrigeration Industry
        (ARI) standards.


SPECIFICATIONS
Model                                           AH6K-SL2M                AH9K-SL2M              AH12K-SL2M              AH18K-SLM             AH24K-SLM             AH30K-SLM            AH36K-SLM

Capacity (BTU/H)/(Kcal/H)            6,000/1,512                  9,000/2,268                  12,000/3,024          18,000/14,536      24,000/6,048               30,000/7,560               36,000/9,072
Voltage/Cycle/Phase                         ................................................... 230-208VAC/60Hz/1ø.....220-200VAC/50Hz/1ø ................................................
Amperage                                   0.8                           0.8                           0.8                  0.8                0.8                         1.6                        1.6
GPM/(liters/min.)                        1.5/5.7                     2.25/8.5                      3.0/11.4              4.5/17.0          6.0/22.7                    7.5/28.4                   9.0/34.1
CFM/(M3/Hr.)                           200/340                       300/509                       400/679              600/1,019         750/1,274                 1,000/1,698                1,200/2,038
  Auxiliary Heating Elements (1)
  Element Size (KW)                        1.0                           1.0                           1.5                  3.0                3.0                         4.5                        4.5
  Rating (BTU/H)/(Kcal/H)             3,415/861                    3,415/861                     5,123/861            10,245/2,582      10,245/2,582               15,368/3,873               15,368/3,873
  Amperage (230VAC)                        4.3                           4.3                           6.5                 13.0               13.0                        19.5                       19.5
Max. Fuse Size/Min. Circuit Ampacity
  Without Heating Element               5.0/1.0                       5.0/1.0                       5.0/1.0               5.0/1.0           5.0/1.0                     5.0/2.0                    5.0/2.0
  With Heating Element                 10.0/6.0                      10.0/6.0                      10.0/9.0             15.0/14.5         15.0/14.5                   30.0/26.0                  30.0/26.0
Dimensions (in/cm)
  A (Length)                          20.75/52.7                   24.75/62.9                    32.75/83.2            38.75/98.4        44.75/113.7                55.75/141.6                62.75/159.4
  B (Depth) (2)                       10.5/26.7                     10.5/26.7                     10.5/26.7             10.5/26.7         10.5/26.7                   10.5/26.7                  10.5/26.7
  C (Overall Height)   (2)
                                      21.0/53.3                     21.0/53.3                     21.0/53.3     )
                                                                                                                        21.0/53.3         21.0/53.3                   21.0/53.3                  21.0/53.3
  D (Unit Height)                      22.0/55.9                    22.0/55.9                     22.0/55.9             22.0/55.9         22.0/55.9                   22.0/55.9                  22.0/55.9
  E (Discharge Flange)                  1.0/2.5                       1.0/2.5                       1.0/2.5              1.0/2.5            1.0/2.5                     1.0/2.5                    1.0/2.5
  F (Discharge Opening-Depth)           4.0/10.2                     4.0/10.2                      4.0/10.2              4.0/10.2          4.0/10.2                    4.0/10.2                   4.0/10.2
  G (Discharge Opening-Length)         12.0/30.5                    16.0/40.6                     24.0/61.0             30.0/76.2         36.0/91.4                  47.0/119.4                 54.0/137.2
  H (Return Air Grille-Height)        7.25/18.4                     7.25/18.4                     7.25/18.4             7.25/18.4         7.25/18.4                   7.25/18.4                  7.25/18.4
  I (Return Air Grille-Length)        15.0/38.1                     19.0/48.3                     27.0/68.6             33.0/83.8         39.0/99.1                  50.0/127.0                 57.0/144.8
  O (Circulation Water Inlet/Outlet)           0.5” FPT brass with 0.625” HB brass                                    0.75” FPT/HB      0.75” FPT/HB                1.0” FPT/HB                1.0” FPT/HB
  P (Condensate Drains)                      .................................................................2 @ 0.625” ø x 2” long pipe..............................................................
Weight (lbs/kg)                         41/18.6                      51/23.2                         55/25                68/31              70/32                       88/40                      90/41
(1)
      Auxiliary heating elements are optional, and must be ordered with unit. Above sizes are maximum values for each model. Smaller elements may be applied to all units.
(2)
      Dimensions are for vertical configurations. For horizontal configurations, reverse depth (B) and height (C) dimensions.
                                                                                                                                                                     Return to Menu


                        Installation Guidelines for Slim Line Series Air Handlers
         When choosing the proper model Slim Line Air Handler(SLM), primary con-                    teed together, providing there is a minimum drop of 2” from the drain pan to the tee fit-
sideration should be given to calculated BTU loads and available power supply.                      ting. For installations on sailboats that heel over 15°, position air handlers so that the
         Slim Line Series air handlers are designed to be direct-discharge or ductable              condensate pans drain port and starboard and use both drains teed together. Properly
units. Air flow can be supplied to more than one area through the use of properly sized             secure the drain lines to prevent movement or lifting during vessel operation. Check the
plenums, transitions and ductwork. The SLM configuration allows for installation in tight           drains upon completion by pouring two (2) quarts of water into the drain pan. Note:
areas (shipside panels, narrow bulkhead spaces, short overheads, etc.) in either hori-              Condensation drain lines may need to be insulated when located in overhead
zontal or vertical positions.                                                                       lockers to prevent sweating of the line, which could cause water damage.
          Securely fasten the SLM units to a solid level surface using the four (4) mount-                  Never install your air conditioner air handler in bilge or engine room areas.
ing holes provided in the base. The supply air outlet must be sealed properly either                Insure that the selected location is sealed from direct access to bilge and/or engine
through cabinetry for direct-discharge, or into a plenum for a ductable discharge. All              room vapors. Do not terminate condensate drain lines within four (4) feet of any outlet
ductwork is to be routed as smooth and direct as possible. Any flexible ducting is to be            of engine or generator exhaust systems, nor in a compartment housing an engine or
secured every 48” (minimum) to prevent movement while the vessel is under operation.                generator, nor in a bilge (vapors can travel up the drain line), unless the drain is con-
Trim off excess ducting before making final connections.                                            nected properly to a sealed condensate or shower sump pump. Failure to comply may
         The return air inlet(s) must be properly sized and located to allow adequate air           allow bilge or engine room vapors to mix with the air conditioners return air and con-
flow into the air handler. The SLM series air handlers have factory installed, removable            taminate living areas.
filters to trap dust and other airborne particles. These filters must be accessible for                     Water connections from the circulation circuit to the unit are to be reinforced flex-
maintenance. Return air inlets should not be located in such a way as to allow the sup-             ible hose and double clamped, direction of clamps should be reversed. Attach the hose
ply air stream to blow directly into its opening. This will cause “short cycling” of the unit,      to the hose barb fittings on the water inlet and outlet of the unit. All hose, pipe and con-
resulting in poor or inadequate performance.                                                        nections must be insulated properly to prevent condensation. Use approved closed cell
         The supply air grille(s) must be sized and located to allow for proper air circula-        tube insulation (1/2” minimum) on the hose, and foam tape on the fittings (5-6 wraps).
tion within the cabin area(s). Grille locations close to the ceiling, or directed upward,                   All wiring must be sized according to marine design standards. Only stranded,
provide the best air circulation. Undersized grilles and plenums, along with any crushed            tinned copper wire is to be used. All electrical connections to the air handler are to be
or kinked ductwork, will result in poor or inadequate performance.                                  made inside the electrical junction boxes provided on the assembly. All units must be
         Both condensation drain lines must be connected to the air handlers’ two (2)               properly grounded.
drain pan spuds using reinforced flexible hose (5/8”) and clamps. The drains may be



                                                                        Supply
                                                                       Air Grille




                                                                                                                     Supply
                                                                                                                    Air Grille


                                                                 Return                     SL2
                                                                Air Grille               Horizontal
                                                                                        Configuration



                                                                                                                                                      Vertical
                                                                                                             Return                                  Supply Air
                                                                                                            Air Grille                                 Grille

                                                                                    Ducted Plenum
                                                                                                                                                          Service
                                                                                                              SL2                                         Valves
                                                                                                            Vertical
                                                                                                          Configuration
                                                                                                        Removable Filter
                                                                                                                                                                To Circulation
                                                                                                                                                                System
                                                                                                        Return Air Grille
                                                                                                          Flexible Hose                                   Dual
                                                                                                           (insulated)                                 Condensation
                                                                                                                                                          Drain




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                 PRODUCT DESCRIPTION                                                                                                                       Return to Menu

The Fresh Air Makeup Air Handler is a sophisti-
cated chilled water air handler that “conditions”
fresh air as it is continuously introduced into the
yacht. It is designed to remove moisture, salt and a
range of other airborne particulates that could in
time erode the integrity and quality of the onboard
environment. Removal of the particulate matter
results in a cleaner overall environment aboard the
vessel. The system helps remove odor by positively
displacing contaminated air with fresh, clean air.




FEATURES
Durable Modular Design
 • Welded aluminum frame construction provides superior
   strength vs. weight.
 • Entire housing is insulated for thermal efficiency and noise
   reduction.
 • Split filter sections provide easy removal for cleaning and/or
   replacing.
 • Left hand or right hand assembly is available for ease of
   accessibility during routine maintenance or service.
 • Low profile, compact design broadens versatility in
   installation.
 • All components are field-replaceable.

Blower Assembly Module
 • Dual inlet squirrel cage fan design.
 • Dual belt-driven assembly with built-in belt tensioner.
 • All internal components are vibration isolated for quiet            SPECIFICATIONS*
   operation and longevity.
                                                                       Model (1)                             HFA30K-Z1 RH/LH                       HFA30K-Z3 RH/LH
Fan Coil Assembly Module                                                                                       Single Phase                          Three Phase
                                                                       Capacity (BTU/H)/(Kcal/H)               30,000/7,560                          30,000/7,560
 • Enclosed and insulated drain pan incorporates four threaded
   drain connections for complete condensate removal.
                                                                       Voltage/Cycle/Phase                     208-230/60/1                          208-230/60/3
                                                                       Max. Circuit Breaker                        30.0                                  15.0
 • Air bleeder valve on unit assists in removal of air from chilled
   water line during start-up.
                                                                       Min. Circuit Ampacity                       25.0                                  14.6
 • Demister section for water removal is integrated into design to
   ensure maximum moisture “drop-out”.
                                                                       Motor Speed (2)                             High/Low                               High/Low
                                                                         Horsepower (HP)                            0.5/0.13                               0.5/0.13
                                                                         Revolutions/Minute (RPM)                  1,725/850                              1,725/850
Control                                                                  Amperage (FLA)                              4.0/2.0                                1.6/0.8
 • Two speed motor provides maximum cooling during daytime               Heater 4.5 KW (FLA)                          20.0                                   11.3
   hours and minimizes noise levels for evening operation and
   for light load requirements.
                                                                       Airflow (CFM)     (3)
                                                                                                                    300/150                                300/150
 • “SCR” fired electric heaters pulse to provide a consistent
                                                                       Airflow (M3Hr)    (3)
                                                                                                                    500/250                                500/250
   supply air temperature.
                                                                       Dimensions (in/cm)
Quality Assurance
 • All components are coated with a corrosion resistant material
                                                                         A (Length)                            . . . . . . . . . . . . . 49.5/125.7 . . . . . . . . . . .
   for long life.                                                        B (Width)                            . . . . . . . . . . . . . . 22.5/57.2 . . . . . . . . . . . .
 • All units meet or exceed applicable ABYC and U.S. Coast
                                                                         C (Heigth)                           . . . . . . . . . . . . . . 20.0/50.8 . . . . . . . . . . . .
   Guard regulations, CE Directives and general Air Conditioning         D (Return Air)                       . . . . . . . . . . . . . . 15.0/38.1 . . . . . . . . . . . .
   and Refrigeration Industry (ARI) standards.                           E (Return Air)                       . . . . . . . . . . . . . . 16.0/40.6 . . . . . . . . . . . .
                                                                         F (Chilled Water)                      . . . . . . . . . . . . . 0.75” FPT . . . . . . . . . . . .
                                                                         G (Condensate Drain)       (4)
                                                                                                               . . . . . . . . . . . . . . 1.0” FPT . . . . . . . . . . . .
                                                                         H (Supply Air)                       . . . . . . . . . . . . . . 9.00/22.9 . . . . . . . . . . . .
                                                                         J (Supply Air)                         . . . . . . . . . . . . . 8.00/20.3 . . . . . . . . . . . . .

                                                                       Net Weight (lbs/kg)                           185/84                                 185/84
                                                                       (1)
                                                                             Model designation “RH” is for right side access. “LH” is for left side access, facing
                                                                             the fresh air inlet.
                                                                       (2)
                                                                             50 Hz operation will reduce motor RPM by 17%.
* Contact Marine Air Systems for specifications on larger or smaller   (3)
                                                                             Nominal rating by design. 50 Hz operation will reduce CFM by 17%.
  Fresh Air make-up units.                                             (4)
                                                                             Four drain connections per unit.
                                                                                                                                                  Return to Menu


                Installation Guidelines for the Fresh Air Makeup Air Handler
        When choosing the proper model Fresh Air Makeup Air Handler, pri-                to provide a syphon-break for proper drainage, and a means to prohibit the
mary consideration should be given to calculated BTU loads and available                 intrusion of fumes or odors into the fresh air system. The drain lines should be
power supply.                                                                            properly secured to prevent movement or lifting during vessel operation. Note:
        HFA series units are insulated and ductable, designed to be installed in         Condensation drain lines may need to be insulated when located in high
engine rooms or forward/aft areas, where outside air can be made available to            heat load areas to prevent line sweating, which could cause water dam-
the unit. The fresh air can be delivered to the unit through demisters and fil-          age.
tration, or ducted directly to the unit. Fresh air supply is delivered through a                Water connections from the circulation circuit to the fresh air unit are to
central ducting system to cabin areas or to individual air handlers throughout           be reinforced flexible hose. All hose, pipe and connections must be insulated
the vessel.                                                                              properly to prevent condensation. Use approved closed cell tube insulation
        Securely fasten the fresh air unit to a solid, level surface, using the two      (3/4” minimum) or an equivalent insulation tape.
(2) mounting rails provided on the housing. Ductwork to the inlet of the unit                   All wiring must be sized according to marine design standards. Only
should not be smaller than the surface area of the inlet opening on the unit.            stranded, tinned copper wire is to be used. All electrical connections to the
Ductwork from the outlet of the unit should be equal or larger than the surface          fresh air unit are to be made within the electrical junction boxes provided on
area of the outlet opening as it leaves the unit. Main ducting should be reduced         the assembly. All units must be properly grounded and bonded.
as branch lines are extended to individual areas to assist in proper air balanc-                CAUTION: Never install your air handler in the bilge or engine
ing of each cabin or area. Balancing dampers can be installed at the end of              room areas. Insure that the selected location is sealed from direct
each individual branch to allow for proper air balancing. All ductwork should            access to bilge and/or engine room vapors. Do not terminate conden-
be securely fastened to prevent movement while the vessel is under operation.            sate drain line within three (3) feet of any outlet of engine or generator
Condensation drain lines must be connected to the unit’s four (4) drain fittings         exhaust systems, nor in a compartment housing an engine or genera-
(1”FPT). The drains may be teed together, providing there is a minimum drop              tor, nor in a bilge, unless the drain is connected properly to a sealed
of 2” from the drain pan to the tee fitting(s). A P-trap fitting should be installed     condensate or shower sump pump.




                                                                       FRESH AIR MAKEUP UNIT                        FRESH AIR INLET




                                                                                                                                                CHILLWATER LOOP
                                                                                                                                                CONNECTIONS,
                                                                                                                                                SUPPLY/RETURN

                                                                                       FRESH AIR
                                                                                         OUTLET




                                         AIR HANDLER
                                         (TYPICAL)




       FRESH AIR DUCT,
       DAMPER (TYP)
                                                                                                                    FRESH AIR DUCT, CABIN/
                 FRESH AIR DUCT,                                                                                    GENERAL AREA SUPPLY
                 AIR HANDLER SUPPLY




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                PRODUCT DESCRIPTION                                                                                     Return to Menu

The Defroster is designed to remove any moisture
or condensation that may form on the inside of a
windshield.

In order to accommodate the wide range of styles
and number of glass areas in yachts, the Defroster
incorporates individual ducts dedicated to each
pane so that all surface areas are treated.

This unit will operate in two modes: fan only sup-
plies ambient cabin air to the windshield for those
times when simple ventilation is desired; and fan
with thermostatically controlled electric heat that
takes cabin air and raises the temperature through
the use of finned heating elements mounted in the
Defroster chamber.

The unit is typically mounted under the coaming
area of the pilot house.




FEATURES
 Flexible Installation
 • Custom configuration for up to six duct ring outlets.
 • May be mounted horizontally, vertically, flat or on edge.
 • Two modes of opearation: defrost or fan only.


 Compact Design
 • Constructed of lightweight marine grade aluminum.
 • Tapered duct housing permits easy mounting and installation
   of ducting.
 • Slimline style fits easily in overhead applications or under pilot
   house coamings.
                                                                        SPECIFICATIONS
 Durable Construction                                                   Model                                  PHDCM1.5
 • Two part epoxy polyurethane paint resists chipping and
   corrosion.                                                           Capacity (1)
 • Replaceable filter assembly in back of machine.                        Fan (CFM)                               305
 • Quiet, efficient squirrel cage fan for long service life.              Heat (BTU/H)                            5120

Quality Assurance                                                       Electrical Data
 • All components are coated with a corrosion resistant material        Voltage (VAC)                             230
   for long life.                                                       FLA (Full Load Amps)
 • All units meet or exceed applicable ABYC and U.S. Coast                Fan                                     0.83
   Guard regulations, CE Directives and general Air Conditioning          Heat                                     6.5
   and Refrigeration Industry (ARI) standards.                          KVA (Kilo-Volt-Amps)                      1.69
                                                                        Max. Circuit Breaker                       10
                                                                        Min. Circuit Ampacity                      9.0

                                                                        Dimensions (in/cm)
                                                                          A (Length)                           29.13/71.4
                                                                          B (Width)                            18.00/45.7
                                                                          C (Height)                            9.5/24.1

                                                                        Net Weight (lbs/kg)                     23/10.43
                                                                        Ship Weight (lbs/kg)                    28/12.70

                                                                        (1)
                                                                           Ratings at 60 Hz. 50 Hz. operation will be dimin-
                                                                        ished by 17%.
                                                                                                                                               Return to Menu


                                        Installation Guidelines for the Defroster
        When choosing the proper model Defroster, primary consideration                of mounting position and individual duct runs. Ducting should be connected to
should be given to the mount location as well as the number of individual wind-        the ABS transition rings with stainless steel sheet metal screws and then
shield on the vessel. The location must ensure adequate return air to the              sealed with duct tape to ensure that the mounting is complete and will not leak
defroster, as well as an access panel to perform routine filter maintenance, so        any air around the seams. Hose clamps are not recommended. All duct runs
that the full volume of air flow is realized. Particular attention should be paid to   should be installed as smoothly and as straight as possible, taking care to
the proposed duct routing so that each glass area will receive an equal amount         avoid any unnecessary bends or loops. Once the duct runs are complete and
of air. The placement and style of the individual windshield diffusers is also crit-   positioned properly, they should be secured in place and fastened to the dif-
ical to efficiently remove the condensation.                                           fusers as described above.
        The Defroster should be mounted in a dry, accessible location for serv-               Circuit breakers and wire gauge must be sized according to marine
ice. The only maintenance required on the unit is cleaning of the filter assem-        design standards. Only stranded tinned copper wire should be used. All
bly. Install the unit as near to the underside of the windshield area and as close     equipment should be properly grounded.
to the center line of a the vessel as possible. There are no position sensitive               Each defroster is equipped with a thermal overload protector and an
parts involved. However, the most acceptable mount position is horizontal.             overcurrent fuse link. Do not bypass these devices to operate the heating ele-
        The duct outlets can be sized in advance to accommodate the nuances            ment. Replace failed devices prior to re-operation.




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                                                                                                                                            Return to Menu
                  PRODUCT DESCRIPTION
The CWMC (Chilled Water Master Controller) is a micro-
processor based controller designed for the precise moni-
toring and coordination of DDC controllers for multiple
chilled water systems. The control unit provides central
control for up to six chillers via interfaces with the individual
Digital Diagnostic Controllers (DDC)* on each chiller. It
controls all of the heating and cooling functions for each
chiller, as well as operation of the seawater and chilled
water pumps. It optimizes compressor operation by auto-
matically changing the lead compressor to evenly distribute
run time.

The two-line lit LCD display provides a scrolling read-out of
system status including inlet and outlet water temperature
of each stage, mixed outlet water temperature of the sys-
tem, compressor run times, and diagnostic faults including
refrigerant high and low pressure, flow switch, low voltage,
freeze warning, and high water temperature limit. It also
interfaces with a PC via a serial port permitting remote con-
trol and monitoring. The PC software also permits the sys-
tem to be programmed in several different languages. Note
that a PC is optional - not required and the software is
available on request.

The entire assembly is grounded and protected against
static interference and RF noise. The circuit board is
conformally coated to provide high resistance to external
damage or corrosion.
                                                                    FEATURES
A display cable with phone-type modular jacks connects              What is the difference between the Hydromatic
the display to the circuit board. The circuit board has two
                                                                    controller and the CWMC?
display jacks. One jack is used for the display local to the
chiller the second jack allows a second display to be
                                                                                                                     CWMC                       Hydromatic
remotely installed on the bridge or elsewhere. Non-volatile
                                                                    Compressor duty cycling                          yes                        yes
memory stores all user-selectable parameters indefinitely           Fahrenheit/Celsius                               either                     either
during operation or any power failure situations.                   High Pressure Monitoring                         integrated                 integrated
                                                                    Low Pressure Monitoring                          integrated                 integrated
Internal self-diagnostic programs provide complete                  Flow Switch                                      integrated                 external
electronic checks of all lights, sensors, keys, and circuits.       Freeze Protection                                integrated                 external
                                                                    High Limit                                       integrated                 external
The CWMC controller meets or exceeds applicable ABYC,               Maximum Stages                                   6                          4
                                                                    Network Compatible                               yes                        no
U.S. Coast Guard Regulations and CE Directives.
                                                                    Water Press. In (system)                         optional                   no
                                                                    Water Press. Out (system)                        optional                   no
DDC Design Features...........                                      Refrig. Press. High (stage)                      optional                   no
As part of the over all chilled water master control system,        Refrig. Press. Low (stage)                       optional                   no
the DDC provides the monitoring of each individual control          Hour meter for each stage                        yes                        no
circuit including: refrigerant high and low pressure, freeze        Automatic Setpoint Adjustment                    yes(1)                     no
protection, high water temperature limit, flow switch, option-      Multi-lingual Programming                        optional(2)                no
al chilled water pressure tranducers, and optional high and         Hurry Mode                                       yes(3)                     no
                                                                    Remote Monitoring/Diagnostics                    optional(4)                no
low refrigerant pressure transducers. The DDC communi-
                                                                    Text Display                                     backlit LCD,               two 3-digit
cates and is controlled by the CWMC through a simple                                                                 2 lines,                   LEDs
shielded cable and connects through phone-type modular                                                               16 char./line
jacks. (Note that optional transducers should be part of
                                                                    (1)
                                                                          Whenever a stage is bypassed or off due to a fault, the next stage assumes the setpoint of
original chilled water system order.)                                     the bypassed stage. Subsequent stages are also adjusted.
                                                                    (2)
                                                                          Requires computer attached to serial bus. Message codes can be changed in the field from
                                                                          English to the target language.
* The DDC must be version A23 or greater.                           (3)
                                                                          Standard staging delay is adjustable, but when differential is greater than five degrees stages
                                                                          are started 15 seconds apart.
                                                                    (4)
                                                                          Requires computer and modem interface.
                                                                                                                              Return to Menu


             Installation Guidelines for the Chilled Water Master Controller
   Each Chilled Water Master Controller (CWMC) comprises a display            mixed supply water temperature sensor must be installed downstream of
panel, display cable, and a control circuit board assembled into the unit's   all stages so as to read the mixed supply water temperature. (Supply
electrical box. Determine the proper location of all components before        water is water leaving chiller to supply the air handlers. Return water is
proceeding with the installation.                                             water returning from the air handlers to the chiller.) If CW or SW pump is
   Each DDC circuit board is connected to the CWMC by a 6 pin shield-         smaller than 3/4 Hp, then that pump may be operated directly by stage
ed cable with telephone (RJ-45LAN) style plugs. The DDC connected to          one DDC. Otherwise, stage one DDC should control a contactor to oper-
stage 1 jack of the CWMC is defined by the CWMC as stage 1. Stage 1           ate that pump. Note that 3-phase pumps should have overloads, sized
DDC must have three sensors (see schematic). Other DDC stages only            and set according to the amperage. The DDC board has pots for cooling
need one freeze protection sensor each. The freeze protection sensors         setpoint, heating setpoint, and time delay; however these are overridden
are installed downstream of each evapoator outlet. The return water sen-      when connected to the CWMC.
sor must be installed in a location where the temperature readings will
always be representative of the water returning from all air handlers. The




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                                                                                                   Environmental Control Unit
                                                                                                                                                                     Return to Menu
                    PRODUCT DESCRIPTION
The EliteTM Environmental Control Unit is a microprocessor based
controller designed for the precise monitoring of split and self-
contained direct expansion air conditioning systems in marine
environments.The control can also be used with chilled water air
handlers and is called AH-Elite in this application. The control
operates at 115 or 230 volts, each operable at 50 or 60 cycles.

The new Elite control has a sleek, modern Euro design. It features
raised buttons for easy access and control. The mode button is used
to scroll through the four modes of operation, simplifying program-
ming. Decorative snap-on Vimar® bezels are available in Rondo
(shown) and Classica styles, in a variety of colors and materials to
match your vessel’s interior(5). Other Vimar bezel styles are available
by special order.

The Elite display operates with the new Passport® I/O circuit board.
This new circuit board utilizes state-of-the-art SMT technology. The
Elite display is flash programmable, which will allow for future
software upgrades without the need to replace the circuit board.

The assembly has a ground shield to protect against static interfer-                                                                                            Rondo style bezel shown
ence and RF noise. The circuit board is conformally coated to provide
high resistance to external damage or corrosion.
A display cable with gold plated phone-type modular jacks connects              SPECIFICATIONS
the panel to the system controller. An optional air sensor cable is
connected to the circuit board in the same manner. Non-volatile
memory stores all user-selectable parameters indefinitely during
                                                                                Model                                    ELITE ENVIRONMENTAL CONTROL
operation or any power failure situations. Fused circuits and M.O.V.s
(metal oxide varistors) provide component and board protection.                 Voltage (VAC)                                                 115                        230
                                                                                Cycle (Hz)                                                   50/60                      50/60
The Elite control meets or exceeds applicable ABYC, U.S. Coast                  Phase (ø)                                                      1                          1
Guard Regulations and CE Directives.
                                                                                Circuits (1)
                                                                                Compressor Output(2)                                  40A-115VAC                    20A-230VAC
                                                                                R.V. Output(3)                                         6A-115VAC                     6A-230VAC
FEATURES                                                                        Fan Output                                             6A-115VAC                     6A-230VAC
                                                                                Heater Output                                          30-115VAC                    30A-230VAC
 Selectable Functions                                                           Pump Output(2)                                         Quarter HP                       Half HP
• Automatic humidity control - reduces moisture when the boat is
   unattended.                                                                  Temperature Ranges ˚F(˚C)
• Cool only, heat only, dehumidify, or automatic mode selection.
                                                                                Set Point Temperature                                              65-85(18-29)
• New heater relay allows for optional electric heat.
                                                                                Display Temperature                                                5-150(-15-66)
• Temperature displayed in Fahrenheit or Celsius.
• Multiple fan speed selections - automatic or three manual speeds.
                                                                                Air Sensor Temperature                                             5-150(-15-66)
• Cycle fan with compressor or continuous fan operation.                        Sensor Accuracy                                            ±2˚F at 77˚F(±3.6˚C at 25˚C)
• Cycle pump with compressor or continuous pump operation.
• Compressor time delay staging for multiple unit applications.
• Calibration of fan speed and temperature settings to maintain precise         Dimensions in(cm)
   control.                                                                     Display Panel                    4.41(11.2) W x 2.96(7.5) H x 1.08(2.7) D
• Blank display lights when desired.                                            Panel Cut-Out                    3.31(8.4) W   x 2.19(5.6) H
• Controls shaded pole and split capacitor fan motors.                          Bezel Size(5)                    4.85(12.3) W x 3.25(8.3) H
• Compressor fail-safe protection.
• Programmable de-icing cycle.                                                  Cables Included(4)
• New “Pump Sentry” protects system if seawater pump fails.                     Display ft(m)                     VCD: 15(4.6) CMCD: 10(3.0) CSD: 30(9.1) Chilled Water: 15(4.6)
• Built in air sensor (optional remote sensor).                                 Water Inlet Sensor               7’ (2.1m) cables included with some AH-Elite & AH-Passport I/O kits.
• Water inlet sensor for individual cabin heating with chill chasers
   (AH-Elite).
                                                                                Other Cables Available(4) Most Cables Available in 5’ increments
• Force open water valves for four hours to bleed system (AH-Elite).
                                                                                Display ft(m)                    10’ - 75’ (3.0 - 22.9)
                                                                                Alternate/Remote Air (optional)  7’ - 60’ (2.1 - 18.3)
Installation                                                                    Outside Air Sensor (optional)    7’ - 50’ (2.1 - 15.2)
• The circuit board and display cable are factory installed in the electrical   Pump Sentry (optional)           7’ - 60’ (2.1 - 18.3)
   box .                                                                        Water Inlet Sensor (AH-Elite)    7’ - 60’ (2.1 - 18.3)
• Display panels are mounted with screws for a secure fit. Bezel snaps on,
   hiding the screws.(5)                                                        (1)
                                                                                      Maximum loads should not exceed 85% of listed output ratings.
• Easy connections using phone-type modular jacks which are shielded            (2)
                                                                                      Does not apply to AH-Elite.
   and grounded.                                                                (3)
                                                                                      Used as water valve output in AH-Elite mode.
                                                                                (4)
                                                                                      Maximum length for display and air sensor cables is 75’.
                                                                                      Maximum length for water inlet sensor cable is 75’.
                                                                                (5)
                                                                                      Idea® type bezels from Vimar sold separately. Dimensions may vary depending on style.
                                                                                                                                                                                      L-2237
                                                                                                                                    Return to Menu


                Installation Guidelines for Elite Environmental Control Unit
   Each Elite Environmental Control Unit comprises a display panel,              Plug in the display cable (8-pin connector). Attach the other end of the dis-
display cable, and a control circuit board assembled into the air condi-         play cable to the display panel. Secure the panel to the bulkhead.
tioning unit's electrical box. Determine the proper location of all compo-          The optional remote air sensor, when used, must be plugged into the
nents before proceeding with the installation.                                   6-pin socket on the circuit board marked "J4" (ALT AIR). It must be
   Locate and secure the air conditioning unit in a dry, accessible area         located and installed properly in the return air stream. When used as an
with the fastener provided. Secure remote electrical boxes containing the        outside air temperature sensor, it must be plugged into socket “J3” (OAT),
Passport I/O circuit board with the fittings provided. The central system        routed and secured properly to a pre-determined location outside the
condensing unit's electrical box can remain factory-installed on top of the      cabin areas. The sensor should not be located in direct sunlight.
unit. Some electrical boxes contain position-sensitive components and            Refer to the AH-Elite operations manual for proper programming and
require correct mount positioning.                                               locations of air and chilled water sensors.
   Allow adequate access for all wiring connections. Wiring and circuit             The new optional “Pump Sentry” feature monitors condenser coil
breakers must be sized according to marine design standards. Only                temperature, and shuts the system down if the coil gets too hot due to loss
stranded tinned copper wire should be used. Make sure all components are         of seawater flow. The 6-pin water sensor must be plugged into socket “J5”
properly grounded.                                                               (SERVICE/H20). Connect the water sensor to the condenser coil water
   Determine the proper location for the display panel in the cabin area         outlet and insulate it. When using the AH-Elite with a chilled water air
(see installation manual) and cut out the bulkhead for mounting                  handler, plug the water inlet sensor cable into socket “J5”
(3.31” W x 2.19” H). Properly route and secure the display cable between         (SERVICE/H2O).
the control circuit board and the display panel.                                    Access to the control circuit board is achieved by removing the screws
   Note: In central system applications, the display cable could be routed       on the electrical box. Slide the front piece containing the components
with the refrigerant line set from the condensing unit to the evaporator/blow-   away from the mounting base. Turning this piece over to any side will
er assembly. Leave a few inches of extra cable at each end for ease of           expose the circuit board and electrical components. A complete wiring
installing or removing components. Do not stretch or pull a cable. Do not        diagram is secured to the inside of the mounting base and/or in the
use staples to secure any cable.                                                 operations manual for reference. Be sure that power is “off” before opening
                                                                                 electrical box.




Sold and Serviced By:




                                                                                                                                      Revised 03-24-03   L-2237
                                                                                    Environmental Control Unit
                                                                                                                                              Return to Menu
                PRODUCT DESCRIPTION
The Passport® I/O Environmental Control Unit is a
microprocessor based controller designed for the precise
monitoring of split and self-contained, direct expansion air
conditioning systems in marine environments. The control
operates at 115 or 230 volts, each operable at 50 or 60
cycles.
The assembly has a ground shield to protect against
static interference and RF noise. The circuit board is
conformally coated to provide high resistance to external
damage or corrosion.
A display cable with gold plated phone-type modular jacks
connects the panel to the system controller. An optional
air sensor cable is connected to the circuit board in the
same manner. Non-volatile memory stores all user-selec-
table parameters indefinitely during operation or any
power failure situations.
Internal self-diagnostic programs provide complete
electronic checks of all lights, sensors, keys and circuits.
Fused circuits and M.O.V.s (metal oxide varistors) provide
component and board protection.
The Passport I/O control meets or exceeds applicable
ABYC, U.S. Coast Guard Regulations and CE Directives.

                                                                     SPECIFICATIONS
FEATURES
                                                                     Model                                                                PASSPORT I/O
User Selectable Functions
• Automatic humidity control - reduces moisture when the boat is     Voltage (VAC)                                                  115                         230
  unattended.                                                        Cycle (Hz)                                                    50/60                       50/60
• Cool only, heat only, or automatic mode selection.                 Phase (ø)                                                       1                           1
• Temperature displayed in Fahrenheit or Celsius.
• Multiple fan speed selections - automatic or six manual            Circuits (1)
  speeds.                                                            Compressor Output                                      40A-115VAC                    20A-230VAC
• Cycle fan with compressor or continuous fan operation.             R.V. Output                                           1/4A-115VAC                    1/4A-230VAC
• Compressor time delay staging for multiple unit applications.      Fan Output                                              6A-115VAC                      6A-230VAC
• Calibration of fan speed settings and temperature display to       Electric Heat Output                                  30A-115VAC                     15A-230VAC
  maintain precise control.
• Blank display lights when desired.                                 Temperature Ranges ˚F(˚C)
• Controls shaded pole and split capacitor fan motors.               Set Point Temperature                                              65-85(18-29)
• Compressor fail-safe protection.                                   Display Temperature                                                0-150(-18-66)
• Programmable de-icing cycle.                                       Air Sensor Temperature                                             0-150(-18-66)
                                                                     Sensor Accuracy                                            ±2˚F at 77˚F (±3.6˚C at 25˚C)
Design Features
• Low voltage for optimum safety.                                    Dimensions in(cm)
• Built-in air sensor (optional remote sensor).                      Display Panel                                   4.50(11.4) W x 3.88(9.9) H x 0.88(2.2) D
• Universal symbols with tactile switches and embossed power         Cut Out                                                3.375(8.6) W x 2.875(7.3) H
  key - international recognition.
• Cabin temperature is continuously displayed.                       Cables Included(4)
• Lexan face plate available in black with cameo graphics.           Display ft(m)                      VCD: 15(4.6) CMCD: 10(3.0) CSD: 30(9.1) Chilled Water: 15(4.6)
                                                                     Water Inlet Sensor                7’ (2.1m) cables included with some AH-Elite & AH-Passport I/O kits.
Installation
• The circuit board and display cable are factory installed in the
   electrical box.(3)                                                (1)
                                                                           Maximum loads should not exceed 85% of listed output ratings.
• Display panels can be mounted with adhesive strips, or use         (2)
                                                                           Maximum length for display and air sensor cables is 75’.
   screws with the optional, soft bulkhead adaptor.                        Maximum length for water inlet sensor cable is 75’.
                                                                     (3)
                                                                           30’ display cables on central systems, 15’ with Vector Compacts®, and 10’ with Cabin Mates®.
• Easy connections using phone-type modular jacks which are
   shielded and grounded.




                                                                                                                                                                          L-2238
                                                                                                                                  Return to Menu


       Installation Guidelines for Passport I/O Environmental Control Unit
   Each Passport I/O Environmental Control Unit comprises a display              Do not stretch or pull a cable. Do not use staples to secure any cable.
panel, display cable, and a control circuit board assembled into the air      Plug the display cable into the Passport I/O circuit board (8-pin connector).
conditioning unit's electrical box. Determine the proper location of all         Attach the other end of the display cable to the display panel. Secure
components before proceeding with the installation.                           the panel to the bulkhead with the adhesive strips attached, or use the
   Locate and secure the air conditioning unit in a dry, accessible area      optional bulkhead adapter.
with the fasteners provided. Secure remote electrical boxes containing the       The alternate inside air sensor, when used, must be plugged into the
Passport I/O circuit board with the fittings provided. The central system     6-pin socket on the circuit board marked "J4" (ALT AIR). It must be
condensing unit's electrical box can remain factory-installed on top of the   located and installed properly in the return air stream. Using the alternate
unit. Some electrical boxes contain position-sensitive components and         air sensor will disable the face plate air sensor on the display. When used
require correct mount positioning.                                            as an outside air temperature sensor, it must be plugged into socket “J3”
   Allow adequate access for all wiring connections. Wiring and circuit       (OAT), routed and secured properly to a pre-determined location outside
breakers must be sized according to marine design standards. Only             the cabin areas. The sensor should not be located in direct sunlight.
stranded tinned copper wire should be used. Make sure all components are         Access to the control circuit board is achieved by removing the screws
properly grounded.                                                            on the electrical box. Slide the front piece containing the components
   Determine the proper location for the display panel in the cabin area      away from the mounting base. Turning this piece over to any side will
(see installation manual) and cut out the bulkhead for mounting               expose the circuit board and electrical components. A complete wiring
(3.375" W x 2.875" H). Properly route and secure the display cable            diagram is secured to the inside of the mounting base and/or in the
between the control circuit board and the display panel.                      operations manual for reference. Be sure that the power is off before
   Note: In central system applications, the display cable could be           opening the electrical box.
routed with the refrigerant line set from the condensing unit to the
evaporator/blower assembly. Leave a few inches of extra cable at each
end for ease of installing or removing components.




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                                                                                                                                 Revised 03-31-03   L-2238
FEATURES                                                                                                                                                  Return to Menu
      •   Pumps are centrifugal type, providing longevity, quiet operation and minimum maintenance.
      •   Three phase AC Motors are ignition protected. Single phase AC motors have built-in
          thermal overload protection. Single phase pumps P-700 and smaller are ignition protected.
      •   Pump wetted components are constructed of high quality, non-corrosive materials.
      •   Most pump heads are easily rotated, allowing proper application, maintenance and service.
      •   All threaded intake and discharge ports are U.S. standard taper pipe thread (NPT).
      •   Each pump is supplied with a vibration isolated mounting bracket, intake and discharge hose
          fittings and electrical connections.
      •   All units meet or exceed applicable ABYC and U.S. Coast Guard regulations, CE Directives
          and general Air Conditioning and Refrigeration industry (ARI) standards.


SPECIFICATIONS
Model(1) Volts Hz(2) Phase              IP(3) Amps Pump             Gallons        Capacity (4)          Pump                          Overall                    Net
                                                    Head             Per            BTU/Hr            Connections                    Dimension                 Weight
                                                   Ft. H2O (5)      Minute                         Intake / Discharge                H xW x L                  (lbs/kg)
PDA-250  115              50/60     1     Y 1.5          9              3           12,000          1/2” MPT / 1/4” MPT    3.75” x 3.75” x 4.75”                4.8/2.2
         230              50/60     1     Y 0.9                                                                          9.5cm x 9.5cm x 12.1cm
PML-250 115               50/60     1     Y 1.1          9              3           12,000          3/4” FPT / 1/4” MPT    4.25” x 4.74” x 6.25”                4.5/2.0
         230              50/60     1     Y 0.7                                                                         10.8cm x 12.1cm x 15.9cm
PDA-500 115               50/60     1     Y 2.5         10              6           24,000          3/4” MPT / 1/2” MPT    4.25” x 4.25” x 6.25”                8.8/4.0
         230              50/60     1     Y 1.3                                                                         10.8cm x 10.8cm x 15.9cm
PML-500 115                60       1     Y 2.0         12              6           24,000          3/4” FPT / 1/2” MPT     4.75” x 5.75” x 7.5”                8.5/3.9
         230               60       1     Y 1.0                                                                         12.1cm x 14.6cm x 19.1cm
         220               50       1     Y 0.8
PMA-500 115               50/60     1     Y 2.4          9             7.5          30,000              3/4” FPT / 1/2” MPT      4.50” x 4.25” x 10.0”          8.2/3.7
         230              50/60     1     Y 1.2                                                                               11.4cm x 10.8cm x 25.4cm
         220               50       1     Y 0.9
PMA-1000 115              50/60     1     Y 2.1         13              12          48,000              1” FPT / 1/2” MPT        6.25” x 4.5” x 9.0”            8.3/3.7
         230              50/60     1     Y 1.0                                                                              15.9cm x 11.4cm x 22.9cm
P-100    115               60       1     Y 7.2         13              15          60,480               1 1/4” FPT / 1” FPT     8.5” x 7.5” x 13.0”           24.5/11.1
         230              50/60     1     Y 3.6                                                                              21.6cm x 19.1cm x 33.0cm
P-110    230              50/60     3     Y 2.8         17              18          72,000              1-1/4” FPT / 1” FPT      8.5” x 7.5” x 13.0”           24.5/11.1
         460               60       3     Y 1.4                                                                              21.6cm x 19.1cm x 33.0cm
P-120    115               60       1     Y 4.9         18              21          84,000              1-1/4” FPT / 1” FPT      8.5” x 7.5” x 13.0”           24.5/11.1
         230              50/60     1     Y 3.5                                                                              21.6cm x 19.1cm x 33.0cm
P-700    115               60       1     Y 7.2         27              32          129,600             1-1/4” FPT / 1” FPT      8.5” x 7.5” x 13.0”           26.0/11.8
         230              50/60     1     Y 3.6                                                                              20.8cm x 19.1cm x 34.3cm
         230              50/60     3     Y 2.8                                                                                                                30.0/13.6
         460              50/60     3     Y 1.4
P-710    115              50/60     1     N 9.8         23              40          172,800        1-1/2” FPT / 1-1/2” FPT 9.75” x 7.5” x 14.75”               34.0/15.4
         230              50/60     1     N 4.9                                                                          24.8cm x 19.1cm x 37.5cm
         230              50/60     3     Y 2.2
         460               60       3     Y 1.1
P-711    115              50/60     1     N 16.0        42              54          216,000        1-1/2” FPT / 1-1/2” FPT 9.75” x 7.5” x 14.75”               37.4/16.9
         230              50/60     1     N 8.0                                                                          24.8cm x 19.1cm x 37.5cm
         230              50/60     3     Y 4.2
         460               60       3     Y 2.1
P-800     12               DC       -     N  1            7             2            6,000              3/8” FPT / 3/8” OD 3.75” x 2.81” x 5.13”                1.2/0.5
                                          N                                                                             9.5cm x 7.1cm x 13.0cm
P-800LL            12      DC       -     N 1.0          7              2            6,000           3/8” FPT / 1/2” HB     3.0” X 2.75” X 4.5”                 1.0/0.5
                   24      DC       -     N 0.5                                                                          7.6cm X 7.0cm x 11.4cm
P-900              12      DC       -     N 3.8           9             3           12,000          1/2” FPT / 1/2” MPT      4.5” x 3.5” x 9.0”                 4.5/2.0
                   24      DC       -     N 1.9                                                                         11.4cm x 8.9cm x 22.9cm
P-1010             12      DC       -     N 6.9          9              3           12,000          3/4” FPT / 1/2” FPT      3.5” x 4.1” x 8.5”                 5.6/2.5
                   24      DC       -     N 3.5                                                                         8.9cm x 10.4cm x 21.6cm
                   32      DC       -     N 2.6

NOTE: Contact Taylor Made Environmental-FL for pumps larger than P711.
(1)
      Add a ‘C’ to the model number to indicate 230 volts on models 250, 500, and 1000 or add a ‘Z’ to indicate 230 volts on all other models.
(2)
      Capacities given are rated at 60Hz operation (except for 50Hz only motors). 50Hz operation reduces 60Hz Gallons Per Minute (GPM) by 17% . And the head is
      decreased by 30%
(3)
      Ignition Protected.
(4)
      Capacities given are determined using an average of 3 GPM per ton (12,000 BTUs) at given GPM and head. If the capacity of your air conditioning system is greater
      than 24,000 BTU/hr, the seawater pump is most likely air cooled and will need occasional oiling. See manufacturer’s labeling on the pump for maintenance
      instructions.
(5)
      Head calculations required for system is dependent on number and size of units(s), length of hose, use of 90° elbows, and the height of the units above the pump.
      Please refer to MAS pump sizing application guide or consult your MAS application engineer.
                                                                                                                                       Return to Menu


                                Installation Guidelines for Seawater Pumps
    When choosing the proper model Seawater Pump, primary consider-           in damage to the pump components.
ation should be given to the BTU capacity of the condensing unit(s) and          The thru-hull fitting should be dedicated to the system and not shared
the available power supply.                                                   with other components or systems. The seawater strainer should be of
    All centrifugal pumps must be located as far below the water line, and    adequate size and should be located in an accessible area for mainte-
as close to the center line as possible. This prevents exposure above         nance (cleaning).
the water line when the vessel is on the plane or operating in heavy             A shut-off valve (ball-type is recommended) must be installed at the
seas. Install the pump as close as possible to the seawater strainer and      thru-hull fitting to provide a means to service any component below the
thru-hull fitting. Mount the pump securely in a horizontal position with      water line.
the discharge higher than the intake. Rotate pump head towards the               All seawater components should be assembled using properly sized
direction of water flow as long as the outlet remains above the inlet. All    flexible reinforced hose to provide vibration isolation. All fittings must be
of the above helps to prevent any air locks that can cause the pump to        full-flow fittings. Securely fasten each hose run, making sure no kinks or
cease proper operation and cause damage to the components.                    loops exist. Avoid or minimize 90° elbow fittings to ensure maximum
    The entire seawater system should be plumbed on a continuous              water flow. All hose connections must be double-clamped, reversing the
uphill incline from the thru-hull intake to the condenser coil inlet.         clamps, above the water line as well as below it.
    Locate the overboard discharge above the water line and connect it to        When installing multiple units, a single pump is recommended. Size
the condenser coil outlet. The unit condenser coil should be the high         the pump to the equivalent foot of head and the total BTU load of all
point of the application, if possible, thus eliminating a place to trap air   units combined. The discharge of the pump is to be connected to a
and maintaining a self-purging system.                                        spud manifold for proper distribution of water flow to each individual unit.
    The thru-hull fitting should have a clam shell type scoop, facing for-    This manifold should be at least 18”-24” above the pump outlet. For
ward, to help maintain a constant water flow to the pump. The thru-hull       independent control of the seawater pump from each unit, use a pump
fitting and seawater strainer must be equal in size to the intake opening     relay panel.
of the pump. Restriction of flow capacity to the pump intake can result




Sold and Serviced By:
FEATURES                                                                                                                          Return to Menu

 Design
 Large Selection and Variety of Grilles
 • Standard and custom materials complement all yacht interiors.
 • Custom sizes available for any application.
 Wood Frame Grilles
 • Pop out louver panels with Return Air Grilles have
    easy to clean replaceable filters.
 • Supply Air Grilles have double deflection, moveable louvers
    available in anodized bronze or aluminum finish.
 Aluminum Grilles
 • Supply air grilles have adjustable louvers to direct air flow.
 • Return air grilles feature durable fixed-vane louvers.
 • Return air grilles are supplied either with or without filters
    depending on system requirements.
 • Painted grilles are sprayed with an aerospace grade
    polyurethane.
 • Multiple color selection.

 Product Characteristics
 Wood Frame Grilles
 • Cut-out dimensions are 0.063” (0.16cm) larger than the nominal
    grilled size, i.e., a 10 x 5 VH requires a 10.063” x 5.063”
    (25.6cm x 12.9cm) cut-out.
 • Outside frame dimensions are 1.125” (2.9cm) larger than the
    nominal grille size, i.e., a 10 x 5 VH has overall dimensions
    of 11.125” x 6.125” (28.3cm x 15.6cm).                                                          Not all grilles are shown
 • Depth of grilles: VH is 1.375” (3.5cm), VML is 1.875” (4.8cm),
    RA is 0.875” (2.2cm), measured from back of frame.
 • Frame (flange) dimensions is 0.563” (1.4cm) on all sides.         DIMENSIONS (WIDTH       X HEIGHT)(1)
 Aluminum Grilles
 • Cut-out dimensions for the TH, TV, and TRA style grilles are                               Wood Frame Grilles
    .375” smaller than the nominal grille size, i.e., a 10 x 5 TH    Supply Air - Primary                         Supply Air Secondary Closeable
    requires a 9.625” x 4.625” cut-out. The TRAF style grilles are                                                          Model VML
                                                                         Model VH
    .125” smaller.                                                                                                              4x4
 • Outside frame dimensions are 0.875” (2.2cm) larger than the
                                                                             7x7
                                                                            10x5                                                6x4
    nominal grille size, i.e., a 10 x 5 TH has overall dimensions
    of 10.875” x 5.875” (27.6cm x 14.9cm).                                  12x5                                                8x4
 • Depth of grilles: TH and TRA are 0.875” (2.2cm), TRAF is 1”              12x6                                                8x8
    (2.5cm), measured from back of frame.                                   14x4                                               10x4
 • Frame (flange) dimension is 0.625” (1.6cm) on all sides.                 14x5                                               12x4
 Plastic Grilles (Circular)                                                 14x6
 • Depth of 4SA is 2.375” (6.0cm) measured from back of frame.              16x4                                         Return Air with Filter
 • Frame (flange) dimension is 5.5” (14.0cm) in diameter.                                                                    Model RA
 • Cut-out dimension is 4.0” (10.2cm) in diameter.                   Supply Air - Secondary                               7x7        12x14
 • Special adapter available for 3.0” (7.6cm) ducting.                     Model VH                                       8x8         14x7
                                                                              4x4                                         8x10       14x10
The following Supply and Return Air minimums are required                     6x4                                         11x8       14x12
to achieve rated capacity.                                                    8x4                                        12x12        16x9
                                                                             10x4
   Unit               Return                      Supply                     12x4
  (BTUs)           (Sq. In/Sq.cm)             (Sq. In/Sq. cm)                                   Plastic Grilles
                                                                                      Round and Closeable Supply Air Grilles
    4,000             49     316.1              24       154.8                           Model          2SA       3SA         4SA
    5,000             64     412.9              30       193.6                           Duct Size        2”       3”          4”
    6,000             70     451.6              35       225.8
    7,000             88     567.8              40       258.1
    9,000             98     632.3              50       322.6                                 Aluminum Grilles          Return Air With Filter
   10,000             98     632.3              50       322.6                  Supply Air                                   Model TRAF
   12,000            140     903.3              70       451.6                  Model TH                                Return Air Without Filter
   16,000            168    1083.9              84       542.0        4x4        12x4        16x2                             Model TRA
   24,000            280    1806.6             140       903.3       4x10        12x5        16x4                         8x11           14x7
   30,000            350    2258.2             175      1129.1        7x7        12x6        18x2                         10x4          14x10
   36,000            420    2709.8             210      1354.9        8x4        14x4        18x3                         11x7          14x12
   48,000            560    3613.1             280      1806.6       10x4        14x5        20x5                         11x8           16x9
                                                                     10x5        14x6        24x3                        11x12          20x5
                                                                     12x3        14x7                                    12x12          22x7
Note: Custom sizes and custom painted grilles are offered.
                                                                                                                                        28x6
Contact Marine Air Systems, Inc. for pricing and availability.

                                                                     (1)
                                                                           All sizes are in inches, multiply by 2.54 to calculate dimensions in
                                                                           centimeters.
                                                                                                                                                    Return to Menu



                        Installation Guidelines for Supply & Return Air Grilles
    When choosing the proper size grilles for any system, primary considera-           up wedges both help to achieve proper air circulation in this application.
tion should be given to the capacity of that system and its necessary air flow            In no instance should a supply air discharge be directed towards a
(CFM). Reduced or restricted air flow due to undersized grilles or poor                return air grille. This will cause the system to prematurely cycle off (short
installation will result in loss of performance and/or inefficient operation of the    cycle) and prevent the cabin area from achieving the desired temperature.
system.                                                                                   Return air grilles are to be installed low in a cabin area and in close prox-
    Standard air flow for any system is nominally rated at approximately 400           imity to the evaporator coil of the system. If any plenum, chase or duct work
CFM (cubic feet per minute) per ton (12,000 BTU/Hr). In order to maintain              is constructed between the return air grille and the face of the evaporator
this air flow, return air grilles are to be a minimum of 140 square inches of          coil, all cross-sectional areas must maintain a minimum surface area equiva-
surface area per ton. If the grille is in close proximity to the evaporator coil, it   lent to that of the return air grille. If any open area exists between the grille
should match the actual dimensions of the coil as closely as possible to pre-          and the coil, care must be used to prevent this area from being obstructed
vent obstruction of air flow through part of the coil which would result in loss       (stowage, parts, etc.). Return air should only be available to the system from
of performance.                                                                        the cabin area(s). Units should not be exposed to engine rooms, bilges or
    Supply air grilles are to maintain a minimum of 70 square inches of sur-           other areas where fumes or odors could be drawn into the system.
face area per ton. This can be maintained using a single grille or a combina-          Compartments housing equipment should be completely sealed from these
tion of smaller grilles, provided proper installation methods are followed. In         areas.
either case, an even and unrestricted air flow across the entire surface of the           Some return air grilles are manufactured with a removable filter attached.
grille(s) is the ultimate goal in any installation.                                    This filter must be used to catch and trap particles in the air (dust, lint, etc.)
    Placement of grilles is important to ensure proper system performance.             that otherwise would be deposited on and in the evaporator coil, restricting
Supply air grilles are to be located as high as possible in any cabin area.            the air flow through it. The louvre section of each grille is designed to be
They should also be located to distribute air across the cabin as evenly as            easily removed (clips or bullet catches) to access the filter material for clean-
possible. Air flow across the ceiling of any area provides for even tempera-           ing on a regular basis. If no filter is attached to the grille, then a filter must
tures (no hot spots) and complete circulation of the air.                              be installed on the a/c unit.
    When supply air grilles cannot be located high and must be installed lower            Clip-on filters are available for applications where standard return
(i.e., countertop, etc.), they are to be installed in such a way as to channel air     air grilles are not used. These filters attach directly to the front of the
flow up and across the conditioned area. Properly directed louvres and built-          evaporator coil, and must be checked on a regular basis.




Sold and Serviced By:
FEATURES                                                                                                                       Return to Menu

 Ducting Design
 Two Types of Ducting Available
 • Round/wire with woven fabric.
 • Round/wire and mylar fabric shell with 1.0” (2.6cm) wall
    thickness insulation.
 Full Range of Diameters and Lengths
 • 3” through 8” (7.6cm through 20.3cm) diameters.
 • 5’, 10’, 20’, and 25’ (1.53m, 3.04m, 6.10m, 7.62m) lengths(1).
 Installation
 • All ducting attaches easily to associated rings.

 (1)
       Contact Marine Air Systems for availability.

 Transition Box Design
 Large Selection and Variety Available in Aluminum
 and ABS Plastic
 • Transitions.
 • Enclosed air boxes.
 • T-boxes for units.
 Air Flow Designed and Tested Components
 • Matched to Marine Air Systems’ grilles and blowers.
 • Non-restrictive air flow.
 • All rings designed for close tolerance fit with ducting.
 Installation
 • Perimeter flanges on all boxes for mounting ease.
 Aluminum Style Transitions and Boxes
 • Fully insulated.
 • Standard and custom sizes.
 • Fits in any application where space is critical.
 ABS Plastic Style Transitions and Boxes
 • Off the shelf availability.
 • Flexible applications.
 • Vacuum formed ensuring consistent high quality.
 ABS Plastic T-Boxes
 • Off the shelf availability.
 • Insulated mounting pads provided.
 • Unique stepped ring design for flexibility.


SPECIFICATIONS                                                                  other side (15.2cm, 12.7cm, 10.2cm and 12.7cm, 10.2cm, 7.6cm
                                                                                respectively).
Vacuum-Formed Transitions                                                  •    The 7,000 T-box accommodates 5” and 4” duct rings on one side
  • Opening dimensions are 0.375" (0.95cm) larger than                          and 4” and 3” duct rings on the other side (12.7cm, 10.2cm and
    transition size (i.e., 10 x 5 VF has a 10.375" x 5.375" opening.            10.2cm, 7.6cm respectively).
    25.4cm x 12.7cm VF has a 26.4cm x 13.7cm opening).
  • Flange to flange dimensions are 1.5" (3.8cm) larger than transi-     Aluminum Transitions
    tion size (i.e., 10 x 5 VF = 11.5" x 6.5" flange to flange. 25.4cm     • Opening dimensions are 0.25" (0.64cm) larger than
    x 12.7cm VF = 29.2cm x 16.5cm flange to flange).                         transitions size (i.e., 10 x 5 AL has a 10.25" x 5.25" open-
  • Depth of 4x VF models is 4.0" (10.2cm) (measured from back of            ing. 25.4cm x 12.7cm AL has a 26.0cm x 13.3cm opening).
    flange).                                                               • Flange to flange dimensions are 1.75" (4.4cm) larger than
    Depth of 5x and 6x VF models i.e., either 4.5” (11.4cm) or 5.75”         transition size (i.e.,10 x 5 AL = 11.75" x 6.75". 25.4cm x 12.7cm
    (14.6cm) depending on use of round or obround rings.                     AL = 29.8cm x 17.1cm).
  • Flange dimensions are 0.5625" (1.43cm) on all sides.                   • Depth of AL transition box is 0.25" (0.64cm) longer than the
                                                                             diameter of largest round ring (measured from back of flange).
Square Vacuum-Formed Transitions                                           • Flange dimensions are 0.75" (1.9cm) on all sides.
 • Available in 5.25” and 6.25” (13.34cm and 15.88cm) square vac-
    uum -formed transition boxes.                                        Obround Rings Dimensions
 • Opening dimensions are 0.5” (1.27cm) larger than transition size.         3”OB =3.875” x 1.625” (9.84cm x 4.13cm)
 • Flange to flange dimensions are 1.75” (4.4cm) larger than transi-         4”OB =5.125” x 2.250” (13.02cm x 5.72cm)
    tion size.                                                               5”OB =6.500” x 2.625” (16.51cm x 6.67cm)
 • Depth is 0.125” (0.32cm) longer than the transition size.                 6”OB =7.438” x 3.375” (18.89cm x 8.57cm)
 • Flange dimensions are 0.625” (1.59cm) on all sides.                       7”OB =9.000” x 3.625” (22.86cm x 9.21cm)
                                                                             8”OB =9.250” X 5.000” (23.50cm x 12.70cm)
Vacuum Formed T-Boxes                                                     • All obround rings are made of ABS plastic except the 8”OB
  • Height of 10,000, 12,000 and 16,000 T-box with mounting flange           which is made of aluminum. Add 0.25” (0.64cm) to obround
    is 7.875" (20.0cm).                                                      dimensions for minimum box size. All rings are 2.0” (5.1cm)
  • Height of 7,000 T-box with mounting flange is 6.875" (17.5cm).           deep.
  • The 10,000, 12,000 and 16,000 T-boxes accommodate 6”, 5” and
    4” duct rings on one side and 5”, 4” and 3” duct rings on the              VF = Vacuum Formed     AL = Aluminum
                                                                                                                                                          Return to Menu


                          Installation Guidelines for Ducting & Transition Boxes
        When choosing the proper size transitions and duct work for any system, pri-        attached grille. Back installations should provide higher air velocity through the
 mary consideration should be given to the capacity of that system, along with its          attached grille, with less pressurization or full flow across the entire grille surface.
 required air flow (CFM). Reduced or restricted air flow due to undersized transi-                Proper installations will prevent air leaks. If problems arise due to location or
 tions and ducting or improper installation will result in loss of performance and/or       mounting surfaces, strips of adhesive-backed foam can be applied to fill gaps.
 inefficient operation of the system.                                                       Caulking or other adhesives are not necessary and should not be used.
        Distribution boxes for air flow are constructed of insulated aluminum or vacu-            A variety of baffles and restrictors can be applied to divert air flow
 um formed plastic. A variety of configurations are available for air distribution,         as necessary to ensure adequate CFM to any given area. Consult Marine Air
 including enclosed boxes (which fit directly onto blower assemblies), remote boxes         Systems for specific applications.
 (to distribute air flow from the unit to other areas), and transition boxes (to distrib-         Flexible ducting is designed to offer optimum routing throughout vessels. The
 ute air into areas through grilles and into other boxes).                                  following guidelines will ensure proper application and performance:
        Unit boxes are to be attached directly to the blower outlet. The mounting                 • Route all ducting in a smooth, taut and direct manner. Avoid hard bends
 plate is attached to the blower flange and the box is attached to the plate. This box               (90° or more) whenever possible. Cut off any excess length.
 should be positioned in such a way as to provide air flow through the duct work                  • Secure all ducting in place, as vessel motion can cause sagging
 with as few bends as possible. On most units, a rotatable blower allows for further                 or shifting which may result in reduced or restricted air flow.
 flexibility in proper positioning of the box.                                                    • Compress 2 or 3 wraps of the spiral reinforcing wire of the ducting on to
        Remote boxes are to be secured to any solid shelf or bulkhead. The duct                      the ring. Secure the ducting to the ring with 3 or 4 screws above the com-
 run from the unit to the box should be as straight as possible. From the remote                     pressed wire wraps. This method prevents the ducting from slipping off of
 box, properly sized ducting is to be installed into each area based on the air flow                 the ring. Note: Hose clamps are not recommended because the duct-
 (CFM) required.                                                                                     ing can detach from the ring.
        Transition boxes are to be located as high as possible in any cabin area to               • Do not crush or kink any ducting as this will restrict air flow.
 provide even air circulation and temperatures. When this location is not possible,               • Ducting can be reformed to fit odd-shaped spaces, but must be done so
 transition boxes are to be installed in such a way as to channel air flow up and                    carefully in order to prevent restrictions. Ducting can be easily reformed
 across any area. Grilles with directional louvers or built-up wedges may be neces-                  on the ends to fit oval rings.
 sary to accomplish proper air circulation, louvers should point upward.                          • Insulated ducting should be used when routed in high ambient
        Transition boxes are designed to accept ducting (via transition rings) on                    temperature locations. Make certain the inner liner is routed in a smooth
 either side, end or on the back. Side or end installations should provide pressuriza-               manner to avoid restrictions.
 tion of the box, allowing for a full, even flow of air across the entire surface of the




Letters denote location of
rings when ordering
boxes. See order form
found in Direct Expansion
Price Schedule.




                                                                                                   obround



                                           ENCLOSED BOX                           ENCLOSED                 TRANSITION                       DUCTING
                                            TO FIT UNIT                           REMOTE BOX                 RINGS

 Sold and Serviced By:
Dometic Corporation
2000 N. Andrews Ave. Ext. • Pompano Beach, FL 33069-1497 USA
• Phone: 954-973-2477 • Facsimile: 954-979-4414
P.O. Box 15299 • Richmond, VA 23227-0699 USA
• Phone: 804-746-1313 • Facsimile: 804-746-7248
Fleets Industrial Estate • 26 Willis Way • Poole, Dorset BH15 3SU, England
• Phone: +44(0)870 3306101 • Facsimile: +44(0)870 3306102
Email: sales@marineair.com • Website: www.marineair.com                      LB-19 Compiled on 01/06/04