GUIDE SPECIFICATION FOR
CARDIO-ISLAND® LAMINAR FLOW SURGERY SYSTEM
NOTE TO ENGINEERS: READ AND FOLLOW INSTRUCTIONS IN ALL RED CAPS.
PART 1 - GENERAL
A. Furnish and install CARDIO-ISLAND® (hereinafter referred to as “system”) vertical laminar
airflow surgery system in the operating room within the ceiling and walls, as located on drawings.
Supply air from a central air-handling unit (AHU) shall be mixed with air recirculated by the
system. The airflow pattern into the operating room shall be of uniform flow from ceiling-
mounted diffuser plenums, downward across the surgical work area to the peripherally located,
low, wall-mounted return air grilles. A constant pressure/constant velocity, unidirectional laminar
flow pattern shall be created in the work area through utilization of HEPA diffuser plenums and
optional fixed air containment panels at the perimeter of the work area.
B. Recirculated air shall be ducted back to the system’s supply fans and filtered diffusers through
MERV 8 or greater pre-filtered return grilles mounted at the baseboard level above the floor
within the perimeter walls of the surgery room where shown on the drawings. The recirculated air
shall be mixed with supply air (makeup air from the air handler) and then delivered into the
operating room by the system’s supply fans through the HEPA diffuser plenums.
C. System shall include a Human Machine Interface (HMI) cabinet within the operating room for use
by the surgical staff and a main electrical control cabinet located outside the operating room that
houses all controls and power distribution.
D. System shall include pressure transducers to measure plenum pressure with alarms on low and
high pressure values displayed on the HMI through a Building Management System (BMS)
E. System shall include ceiling-mounted coil cabinets and proportional modulating control valves.
The heating and cooling capacity of the system shall be sized to provide temperatures between 60
and 80 degrees Fahrenheit. (NOTE TO SPECIFIERS: This is an average temperature range –
consult factory for other specified range so as to verify that custom design points can be
achieved based on project-specific entering water temperatures available for heating/cooling
coils.) The system shall provide rapid increase or decrease in temperature and set point shall be
controlled by operator from HMI cabinet within the operating room.
F. Material and Work by Others:
1. Any demolition work required must be completed prior to arrival of factory’s installation
2. Installation of surgical lights and equipment booms and associated structural support
shall be by the General Contractor. Structural supports and electrical conduit for the
surgical light and medical gas piping shall not interfere with the space requirements of
the HEPA diffuser plenums, Blower Cabinets, Coil Cabinets and Ductwork, as defined
by the system’s submittal drawings.
3. The General Contractor’s sheet metal subcontractor shall be responsible for the
Form 2-105, effective 7/2012 Page 1 of 11
a. Installation of the HEPA diffuser plenums, HEPA Filters (while under direct
supervision by manufacturer’s personnel), optional Air Containment Panels,
Blower Cabinets and Ductwork, Return Air Grilles with Prefilters, Blank-Off
Panels and Support and Suspension System.
b. Furnish and install ductwork required for supply and exhaust of make-up air
outside the surgical area.
c. Furnish and install recirculation ductwork from filtered recirculation return
grilles to the mixing plenum located prior to the coil cabinets and between the
blower cabinets and the HEPA diffuser plenums.
d. Furnish and install exhaust return ductwork.
e. Furnish concrete anchors/Gripple anchors and any additional structural support
and hardware other than as recommended by system’s shop drawings and noted
as “furnished by manufacturer”.
f. Removal of construction debris and cleaning of room to such state for owner’s
final cleaning before testing and certification of system.
2. General Contractor’s electrical subcontractor shall be responsible for the following:
a. Install system main electrical control cabinet and HMI cabinet.
b. Wire and connect the blower motors to the system’s main electrical control
c. Furnish and connect the main power service to the system’s main electrical
d. Furnish, install and connect wire and cable between the main electrical control
cabinet and the HMI cabinet.
e. Install, wire and connect system electronic temperature sensors and pressure
transducers furnished by system manufacturer where shown on drawings.
f. Install, wire and connect the electronic proportional control valves on the hot
and chilled water lines to the system’s main control panel,
g. Furnish, install, and connect lay-in style fluorescent light fixtures surrounding
the diffusers as shown on the drawings; furnish, install and connect associated
h. Install and connect optional teardrop light fixtures furnished by system
manufacturer and furnish as shown on the drawings; furnish, install and connect
3. The General Contractor’s piping subcontractor shall be responsible for the following:
a. Install two (2) ceiling-mounted heating/cooling coil cabinets furnished by
b. Furnish and install the hot and chilled water supply and return lines to and from
the two (2) heating/cooling coil cabinets.
c. Install the proportional modulating control valves furnished by system
manufacturer on the hot and chilled water return lines.
d. Furnish and install two (2) drain lines from coil drain pan to location shown on
4. After the construction cleaning is complete, the owner shall be responsible for final
sterilization of the operating rooms prior to factory startup, testing, and certification of
the system. The hospital’s normal sterilization procedure shall be followed in order to
prepare the room for this phase.
E. All exposed surfaces, including border trim, to have the finishes specified.
F. Verify exact locations of diffusers, registers, and grilles with architectural reflected ceiling plan.
Coordinate frame types with room finish schedule.
Form 2-105, effective 7/2012 Page 2 of 11
A. Prepare all submittals in accordance with Section 01 33 00.
B. Product Data: Manufacturer’s published literature on major system components.
C. Shop Drawings: System architectural reflected ceiling plans, mechanical system layout and
locations of HEPA diffuser plenums and return air grilles, elevation views, electrical coordination
drawing, and trade installation and coordination notes.
A. Provide manufacturer’s warranty on all parts covering defects in materials and workmanship for
one (1) year from date of certification and testing of installed system.
PART 2 - PRODUCTS
A. Manufacturer must have at least five (5) years experience successfully producing system as
B. Acceptable Manufacturer: Precision Air Products Co., Hopkins, MN (800) 404-0931.
C. Substitutions: Not permitted.
2.02 SYSTEM COMPONENTS
A. HEPA DIFFUSER PLENUMS
1. The diffuser shall utilize an equalization chamber and HEPA filter to deliver filtered air
to the space with zero aspiration at the face of a perforated plate.
2. Diffuser construction shall include a .063" extruded aluminum frame assembly with
.040" formed aluminum plenum. Diffuser plenum box seams shall be silicone sealed at
the factory to prevent pathways to interstial space.
3. The frame assembly shall include a rigid "knife edge" as an integral part of the frame
assembly extrusion. Assembly shall allow room-side HEPA filter installation and
ENGINEER TO CHOOSE FACEPLATE STYLE BY SELECTING ONE OF THE
FOLLOWING (DELETE OTHER CHOICE AND RED TEXT):
For standard framed style faceplate:
4. Perforated distribution plate shall be of 0.050" aluminum with 23% open area. Plate
shall be retained to the module frame through the use of quarter-turn fasteners.
Manufacturer shall provide safety retainers of vinyl-coated stainless steel cables on
opposite sides in order to prevent accidental dropping of faceplate. Distribution plate
shall be installed in extruded aluminum mounting frame with mitered back-welded
corners. The backside of faceplate shall be easily accessible for ease of cleaning.
For optional wrap-around style faceplate:
4. Perforated distribution plate shall be of 0.050" aluminum with 23% open area and shall
extend over and wrap around plate frame on all four sides to assure continuous perforated
surface appearance between ceiling tee frames. Plate shall be retained to the module
frame through the use of quarter-turn fasteners. Manufacturer shall provide safety
retainers of vinyl-coated stainless steel cables on two opposite sides in order to prevent
Form 2-105, effective 7/2012 Page 3 of 11
accidental dropping of faceplate. The backside of faceplate shall be easily accessible for
ease of cleaning.
5. Diffuser plenum boxes shall be lined on the interior surface with 1” thick polyester
urethane sound attenuating material with a flame-bonded Tuftane coating on all exposed
B. HEPA FILTERS
1. A terminal HEPA filter shall be mounted within each diffuser plenum box. Each HEPA
filter shall be room-side accessible. The "knife edge" of the plenum box extruded frame
assembly and the filter’s gel shall form an airtight seal.
2. The HEPA filters shall be tested to IEST-P-CC001 “Type J”, a filter that has been
efficiency tested at rated flow in accordance with the methods of IEST-RP-CC007 and, in
addition, has been leak tested in accordance with IEST-RP-CC034 (scanned). The
minimum efficiency for this filter type is 99.99% when tested, yielding the lower
efficiency, at either 0.1-0.2 micron or 0.2-0.3 micron particle size ranges.
3. The HEPA filters shall be laminar flow grade panel filters consisting of uniform non-shed
micro glass fiber media pack with continuous hotmelt pleat separators. Media shall be
pleated to 70mm pack thickness. The pressure drop across the filter shall not exceed
0.38" w.g. at a filter face velocity of 100 ft/min. All materials used shall be in accordance
with UL900 classification. Each filter shall be individually factory tested for overall
efficiency and scan tested for leakage in accordance with IEST and shall bear a label
affixed to filter frame which includes filter size, lot number, unique serial number, part
number, minimum rated and actual efficiency, and target and actual pressure drop. Filter
shall also have traceable Certification of Compliance (COC) available upon request.
4. The anodized extruded aluminum filter frame shall be 3.55” deep. Frame shall have
integral channel filled with cleanroom grade, low outgassing non-flowing urethane gel.
Gel shall withstand knife-edge insertion to partial depth without complete depth cutting
or full length splitting. Gel shall not shrink, craze, bubble, swell or show significant
changes in physical properties when directly exposed to PAO, dilute sodium hypochlorite
solution, dilute Spor-Klenz®, VHP, or other common cleaning, antimicrobial or
decontamination agents. Filter shall have a center-board with removable well-nut plug for
volume adjustment valve access. Centerboard shall completely isolate filter media to
prevent damage to filters during valve adjustment. The media pack shall be completely
encapsulated within filter frame with low outgassing, fire-retardant, self-extinguishing
5. Diffuser manufacturer shall provide HEPA filters in order to guarantee fit to plenum
body and laminar flow performance of diffuser. Filters shall be Camfil Farr Megalam
Series or equal and be manufactured in the USA.
6. HEPA filters shall be installed into diffuser plenums after ducts are blown down and the
room has been thoroughly cleaned and sterilized. Installation of filers shall be by General
Contractor’s sheet metal subcontractor while under direct supervision by factory
personnel after the ducts are cleaned and the room has been thoroughly cleaned and
sterilized. HEPA filters shall remain in sealed packages until just before they are
inspected and installed. Filters shall be installed by means of stainless steel filter clips,
nuts, and bolts as provided by system manufacturer.
C. AIR CONTAINMENT PANELS
(THIS IS AN OPTIONAL FEATURE FOR LOW-BASEBOARD RETURN (LBR) SYSTEM.
ENGINEER TO DELETE THIS SECTION IF PANELS ARE NOT DESIREDBY OWNER
AND AFTER CONSULTATION WITH MANUFACTURER REGARDING LOCATIONS OF
RETURN AIR GRILLES WITHIN THE OPERATING ROOM)
Form 2-105, effective 7/2012 Page 4 of 11
1. Each system to include ceiling-mounted clear air containment panels. Clear panels shall
be framed with an extruded aluminum, mounted to 3” wide ceiling framing around the
entire perimeter of the diffuser array. Panels shall be supported and suspended from
above as per manufacturer’s recommended suspension details and hang to a height of
___” (ENGINEER TO SPECIFY DIMENSION) above the finished floor, surrounding
the clean zone. Panels to be constructed of 3/16” thick optically clear polycarbonate with
GE LEXAN MR-10 mar-resistant coating framed with an anodized aluminum extrusion
to provide structural rigidity. Polycarbonate material to meet the following criteria:
Tensile Strength 8,900-10,500 PSI
Flexural 13,500 PSI
Impact Strength, Izod 14-17 ft/lb/in of notch
Hardness, (Rockwell) M62-R118
Melting Point >300 degrees F
Burn Rate <34
D. FAN CABINETS AND DUCTWORK
1. Each system shall include four (4) fan cabinets, to supply air to the HEPA diffuser
plenums as shown on the plans. Each fan cabinet shall house one (1) blower each and a
lock-out/tag-out ready motor disconnect switch with early-break auxiliary switch for
motor and VFD protection
2. Each blower shall be provided with a dedicated direct-drive 3/4 HP, 1200 rpm, high-
efficiency fan motor rated for variable speed service. At full speed, each fan shall be
rated to provide between 1500-1800 CFM while working against 1” w.g. static pressure.
3. The discharge velocity 1 ½” below diffuser face shall be 80 ft./min. +/- 10 ft./min at high
4. Each fan cabinet shall be suspended from the ceiling slab above by not less than four (4)
3/8” dia. threaded rods.
5. Access to fan cabinets shall be by means of removable blank-off panels provided by
manufacturer and located directly below each cabinet as shown on drawings.
6. All fan cabinets and diffuser plenums shall be lined on the interior with 1” thick polyester
urethane sound attenuating material with flame-bonded Tuftane coating on all exposed
surfaces and when tested in compliance with ASTM Standard E-84-87, shall have a flame
spread rating not to exceed 25 and a smoke developed rating not to exceed 50.
7. Finish of fan cabinets shall identically match the finish of the special diffusers.
SPECIFIER NOTE: ENGINEER TO SELECT REQUIRED COIL TYPE AND QUANTITY
OF VALVES REQUIRED IN PARAGRAPHS. 1 AND 2 BELOW AND DELETE TEXT
APPLICABLE TO OTHER COIL TYPE NOT SELECTED:
1. System shall include two (2) ceiling-mounted (cooling coil / combination heating/cooling
coil) heat exchangers with integral drain pans each factory-mounted within one (1) coil
cabinet to be ceiling-mounted by installing contractor. Each cabinet shall have two (2) P-
1000 Unistrut lengths factory-welded to the exterior of the cabinet’s top for suspension
from not less than eight (4) 3/8” threaded rods total.
2. System shall include (two (2) if cooling coil only selected/ four (4) if heating/cooling
combination coil selected) two-way proportional modulating control valves with
electronic actuators. Valves shall be sized and selected by system manufacturer.
3. System shall include (2) RTD temperature probes mounted within (2) recirculating return
4. Location of the coil cabinets shall be at the junction of the return air duct and the blower
Form 2-105, effective 7/2012 Page 5 of 11
5. Condensate drain pans shall be furnished with one (1) 3/4” male NPT connection per coil
cabinet. Access to the drain pan shall be from the bottom of the ceiling-mounted
6. Finish of coil cabinets shall identically match the finish of the special diffusers.
F. ELECTRICAL CONTROLS
1. Each system shall be provided with one (1) U.L. label main electrical control cabinet. A
separate flush mounted cabinet shall be provided to house a Human Machine Interface
2. The main electrical control cabinet shall house the PLC, input/output (I/O) modules,
variable frequency drives (VFD), power transformer, overload protection devices, main
system power disconnect, and interface to the BMS. The main electrical control cabinet
shall be wall-mounted outside the operating room by the electrical subcontractor at a
location determined by the owner but not more than 100 feet from the system fans. The
main electrical control cabinet shall also house an HMI for service and troubleshooting.
The secondary HMI shall provide full access to system controllers for configuration, set-
up, troubleshooting, and operation of the system. Provisions shall be provided to allow
passcode protection to limit access by unauthorized users.
3. For typical 4-fan system, the Owner shall provide one (1) ENGINEER TO SELECT
VOLTAGE FROM ONE OF THE FOLLOWING AND DELETE OTHER TEXT
a. 30 Amp, 4-wire, 3-phase, 208 Volt
b. 15 Amp, 4-wire, 3-phase, 480 Volt
power feeder from the emergency power system for each main electrical control cabinet
4. The main electrical control cabinet shall be NEMA 12 rated and be fabricated from 14-
gauge steel with a white powder-coat finish. The cabinet shall have a perimeter flange
for flush mounting. The access door shall be hinged and shall be held closed by two
quarter-turn fasteners. No components shall be mounted to the access door. Systems
with four or more VFD’s shall include an appropriate number of vents in the access door
to prevent thermal overload. All control components located within the panel shall be
mounted on a 14-gauge steel back plate with the same white powder-coat finish as the
cabinet and shall be grounded.
5. Speed control of each of the fans shall be provided by individual variable frequency
drives (VFD’s) in conjunction with a single programmable logic controller (PLC). The
VFD’s shall be used to set the speed for each fan motor in each mode during factory
startup. Low speed shall be sufficient to maintain positive load on filter media. High
speed shall be sufficient to meet diffuser discharge velocity requirements. Each VFD
shall be provided with a supply line filter to prevent any reflected signal noise from
interfering with the building’s power systems. All conduit containing power wires from
the VFD’s to the motors shall be metallic and grounded to prevent the propagation of
radio frequency interference (RFI).
6. The PLC shall be factory programmed to switch the system between the high and low
speed modes, to monitor the status of the fan motors, VFD’s and plenum air pressure and
temperature sensors, and to relay all operational signal information between the HMI’s
and other control components. Relays shall be provided for interface with fire life-safety
system as well as the operating room’s air volume boxes. All operational commands and
system mode change inputs through the HMI’s shall be processed by the PLC to run the
fan motors at the appropriate speed. Faults and alarms generated by the VFD’s or the
pressure sensors shall be displayed on the HMI’s and at the BMS. The PLC will also
continuously monitor the system status and HEPA filter loading and send this
information to the HMI and BMS.
7. Overload protection of the VFD’s, line filters, and the motors shall be provided by circuit
breakers at the main power disconnect and at each of the lines feeding the individual
VFD’s. Circuit breakers in the power feeds of each component shall provide protection
Form 2-105, effective 7/2012 Page 6 of 11
of the step down transformer, the PLC, and the control side of the VFD’s. All
components shall have positive grounding.
8. The HMI cabinet shall house the HMI and system pressure transducers. It shall be
mounted within the Operating Room, location to be determined by owner but not more
than 100 feet from the system transducers. The primary HMI shall provide full access to
system controllers for configuration, set-up, troubleshooting, and operation of the system.
Provisions shall be provided to allow passcode protection to limit access by unauthorized
9. The operating room HMI shall be a 7.5”, backlit touch-screen, resistive analog type with
TFT display and 64K colors; resolution not less than 640 x 480 pixels. The screen shall
be capable of being cleaned without damage using standard OR cleaning materials. It
shall utilize a lock-out feature that prevents status changes during cleaning procedures.
HMI shall display as default values fan status, alarm status, and alarm values as required.
HMI shall provide one-touch access to faults, menus, or trouble shooting screens along
with one-touch return to previous screens or home page
10. Mounted within the HMI shall be one (1) differential pressure transducer per fan
required, accuracy minimum of 0.4% span over a range of 0-2” w.c., ±0.03%/°F,
including the effects of linearity, hysteresis, and repeatability.
1. Lay-in / Grid style fluorescent light fixtures surrounding the HEPA diffusers shall be
furnished, installed, and controlled by General Contractor’s electrical subcontractor.
FOR OPTIONAL TEARDROP PROFILE LIGHT FIXTURES, INCLUDE PARAGRAPHS 2.
AND 3. BELOW:
2. System shall include teardrop profile, single lamp lighting fixtures designed for
cleanroom use between diffusers where shown on drawings. Fixtures shall be 24", 36", or
48" in length and 2" in width at the base. Fixture housing lamp holder brackets and
channel cover shall be constructed of code gage steel. All metal parts shall be chemically
treated with a rust resistant phosphatized solution and finish coating on reflective surfaces
shall be white acrylic enamel electro-statically applied. The light diffuser shall be milk
white acrylic linear prism. All electrical components shall be U.L. Listed. Fixture
voltage shall be 120 Volt/Single Phase/60 Hz. Each fixture shall be provided with a 40-
Watt lamp with a rapid start, high power factor ballast and radio frequency interference
(RFI) suppressor. Mounting shall be to 3" wide ceiling framing included in system’s
suspension and support system.
3. Installation, wiring, and control of the teardrop fixtures to shall be by General
Contractor’s electrical subcontractor. Control responsibility to be determined by owner.
H. BLANK-OFF PANELS
1. System shall include perforated blank-off panels identical in appearance to the panel
diffusers for the following areas where columns may penetrate the ceiling or where
interstitial access is required:
a. surgical light column(s)
b. medical gas column(s)
c. other ceiling-mounted equipment column(s)
d. access to blower cabinets
2. Blank-off panels shall have solid plate installed behind perforated plate, providing a seal
between the room and interstitial space.
3. The installing contractor shall cut all fill-in panel(s) for surgical light(s), medical gas
column(s), and/or other ceiling-mounted apparatus as required as required after this
Form 2-105, effective 7/2012 Page 7 of 11
BLANK-OFF PANEL OPTION:
TO SPECIFY SOLID BLANK-OFF PANELS, REPLACE SECTION 2.3 PARA H. WITH THE FOLLOWING:
1. System shall include solid face blank-off panels where indicated on the drawings and
where columns may penetrate the ceiling or where interstitial access is required:
a. surgical light column(s)
b. medical gas column(s)
c. other ceiling-mounted equipment column(s)
d. access to blower cabinets
2. Panel to have solid plate installed within extruded aluminum perimeter frame with
mitered corners providing a seal between the room and interstitial space.
3. The installing contractor shall cut all fill-in panel(s) for surgical light(s), medical gas
column(s), and/or other ceiling-mounted apparatus as required after this equipment
I. SUPPORT AND SUSPENSION SYSTEM
1. The entire laminar flow system shall be suspended from the structure above. Support and
suspension system shall include integral extruded aluminum tee and angle assembly to
support air distribution modules, lighting fixtures, and fill-in panels without deflection.
The minimum wall thickness of the aluminum tee shall be 0.125 inches with a minimum
weight of 0.43 lbs./ft. The frame system to be either pre-cut and pre-assembled at the
factory and marked for ease of reassembly in the field by the installing contractor or
heliarc-welded at all intersection points at the factory into subassemblies not larger than
6’x18’ which butt to adjacent subsections for field assembly with "U" clips. All
members shall be pre-punched on 6” centers for suspension from No. 2 Gripple 2 mm
dia. galvanized high tensile steel wire rope/hanger kits installed in vertical position in
accordance with Gripple manufacturer’s installation instructions. Gripple shall be
attached on 2’-0” centers max. spacing. Gripple wire length and appropriate anchor end
type to be determined by installing contractor based on above-ceiling space available and
surface type to which Gripple will be anchored.
2. System manufacturer shall furnish 1/8" thick closed cell polyethylene PSA-backed gasket
tape to be field-installed onto the frame assembly in such as way as to provide a
continuous barrier between the interstitial space and the operating room without gaps.
3. Finish of the exposed ceiling level support and suspension system shall identically match
the finish of the special perforated diffusers and blank-off panels.
4. Each fan cabinet shall be suspended from the slab above by not less than four (4) 3/8”
threaded rods attached on corners.
5. The system manufacturer shall furnish all 3/8” threaded rods/rod couplers, Gripple kits,
spring nuts, bolts and washers as necessary for structural support of the system as shown
on system’s submittals.
6. Installing contractor shall furnish concrete anchors.
J. HEAVY-DUTY EASY-ACCESS RETURN AIR GRILLES WITH PREFILTERS
SIZES AND QTY. OF RETURN GRILLES AND FILTERS TO BE SPECIFIED BY
ENGINEER AND INDICATED ON GRD SCHEDULE OR INSERTED HERE.
1. Filtered return air grilles shall be designed to meet the special requirements of ventilation
systems in operating rooms and shall be of sizes and mounting types as shown on the
plans and outlet schedule. The grille shall provide for the transfer of air out of the room
into a duct chase that returns the air to the air handler. The grille shall be designed to
accommodate a single pre-filter of 2” nominal thickness.
Form 2-105, effective 7/2012 Page 8 of 11
a. The grille frame shall be designed for surface mounting in a vertical gypsum
board type wall and shall incorporate the following:
i. Integral filter rack shall be designed to prevent air from bypassing the filter.
ii. Filter rack shall be capable of housing a single MERV 8 pleated filter of
1”or 2” nominal thickness.
iii. Perimeter trim flange shall be 1” min. width to conceal the rough opening.
iv. Construction shall be of 0.063”aluminum.
v. All seams shall be continuously MIG welded to prevent air by-pass.
vi. All mounting hardware shall be applied to interior of frame.
b. The louvered face shall be designed to permit filter access and replacement
without use of tools and shall incorporate the following:
i. Fixed deflection blades shall be available parallel to the long or short
dimension of the grille.
ii. No visible fasteners or mounting hardware.
iii. Louver-type blade construction shall be of 0.063” extruded aluminum at an
angle of 45 degrees, spaced at 1” to block line of sight beyond the face.
iv. Blades shall be attached by 0.063”aluminum mullions from behind the
grille and welded in place.
v. Removable face for sterilization and maintenance.
c. Verify exact locations of return grilles with room’s architectural section views.
2. Manufacturer shall furnish two (2) sets of prefilters with an ASHRAE Minimum
Efficiency Reporting Value (MERV) number of 8 (or MERV-8 filters) in accordance
with ASHRAE Std. 52.2.
K. FINISHES AND COATINGS
1. The complete tee and angle frame assembly, fan cabinets, return air grilles, diffuser
plenums and fill-in panels shall be finished in white baked enamel.
2. The finish on the aluminum trim around the entire perimeter of the optional air
containment shield shall be 215-R1 clear anodized.
3. System to be provided with certification of all coatings and materials that have been
furnished and installed.
PART 3 – EXECUTION
3.01 PRE-INSTALLATION INSPECTION/EXAMINATION
A. Manufacturer’s direct factory personnel shall be scheduled to be on site to perform a field
inspection and interference assessment of above-ceiling space including the structural supports for
surgical lights and equipment booms prior to release of custom-engineered materials to
fabrication. Manufacturer shall plan the required installation sequence with installing mechanical,
electrical, and piping contractors.
B. The installing contractor shall examine all openings, mechanical and electrical work, and
adjoining and adjacent construction to receive System prior to commencing this Work.
C. The installing contractor shall field verify rough hard ceiling opening dimensions are as required
in submittals and hard ceiling conditions to be plumb and level with square corners to receive
D. Openings not acceptable for System installations shall be corrected by the appropriate contractor
until conditions are satisfactory to installing contractor
E. The General Contractor shall coordinate corrective/remedial work promptly.
F. Proceeding with the installation of the System indicates the installing contractor accepts the
openings and conditions.
Form 2-105, effective 7/2012 Page 9 of 11
A. Installation shall be by General Contractor’s sheet metal subcontractor at location shown on
drawings. The General Contractor’s sheet metal subcontractor shall be responsible for the
1. Installation of the HEPA diffuser plenums, HEPA Filters (while under direct supervision
by manufacturer’s personnel), Air Containment Panels, Blower Cabinets and Ductwork,
Return Air Grilles with Prefilters, Blank-Off Panels and Support and Suspension System.
2. Furnish and install ductwork required for supply and exhaust of make-up air outside the
surgical area as defined outside the perimeter of fan cabinets.
3. Furnish and install return ductwork from return grilles back to the diffuser banks.
4. Furnish concrete anchors/Gripple anchors and any additional structural support and
hardware other than as recommended by system’s shop drawings and noted as “furnished
5. Removal of construction debris and cleaning of room to such state for owner’s final
cleaning before testing and certification of system.
B. General Contractor’s electrical subcontractor shall be responsible for the following:
1. Install system main electrical control cabinet and HMI cabinet.
2. Wire and connect the blower motors to the system’s main electrical control cabinet.
3. Furnish and connect the main power service to the system’s main electrical control
4. Furnish, install and connect wire and cable between the main electrical control cabinet
and the HMI cabinet.
5. Install, wire and connect system electronic temperature sensors and pressure transducers
to the main control panel.
6. Install, wire and connect the electronic proportional control valves on the hot and chilled
water lines to the system’s main control panel.
7. Furnish, install, and connect lay-in style fluorescent light fixtures surrounding the
diffusers as shown on the drawings; furnish, install and connect associated controls.
8. Install and connect optional teardrop light fixtures furnished by system manufacturer and
furnish as shown on the drawings; furnish, install and connect associated controls.
C. The General Contractor’s piping subcontractor shall be responsible for the following:
1. Install two (2) ceiling-mounted heating/cooling coil cabinets furnished by system
2. Furnish and install the hot and chilled water supply and return lines to and from the two
(2) heating/cooling coil cabinets.
3. Install the proportional modulating control valves furnished by system manufacturer on
the hot and chilled water return lines.
4. Furnish and install two (2) 3/4” drain lines from coil drain pan to location shown on
D. After the construction cleaning is complete, the Owner shall be responsible for final sterilization
of the operating rooms prior to factory startup, testing, and certification of the system. The
hospital’s normal sterilization procedure shall be followed in order to prepare the room for this
3.03 FACTORY INSTALLATION SUPERVISION
A. Factory-approved local representative shall be available for coordination meetings.
Form 2-105, effective 7/2012 Page 10 of 11
B. Manufacturer’s direct factory personnel shall be scheduled to be on site on an intermittent basis to
supervise the installation of key components. Manufacturer shall provide installation instruction
to contractors personnel regarding sequence of installation, proper suspension of components, and
field cutting techniques. Service shall be scheduled to take place after installing contractor
assures manufacturer that room construction is at a stage compatible with the supervision services
to be provided.
C. Manufacturer’s direct factory personnel shall supervise the installation of HEPA filters including
supervising the unpacking of filters, a visual inspection, and supervision of the installation of
HEPA filters into diffusers by contractor’s personnel. Upon completion of installation,
manufacturer shall complete a non-challenge scan of filter face with particle counter for detection
of leaks in media. Entire perimeter of filter frame shall also be scanned to assure seal of filter to
diffuser’s knife edge. Manufacturer shall repair any minor leaks and coordinate the repair of major
3.04 PREPARATION FOR BALANCING, TESTING AND CERTIFICATION
A. The General Contractor’s sheet metal subcontractor shall be responsible for removal of
construction debris and initial cleaning of the room.
B. After the construction cleaning is complete, the owner shall be responsible for final sterilization of
the rooms prior to the factory testing, balancing and certification phase of the project. The
hospital’s normal sterilization procedure shall be followed in order to prepare the room for this
A. The manufacturer shall, after the system has been installed, balance the system to obtain uniform
airflow over the discharge face of the laminar flow diffusers in accordance with manufacturer’s
recommended balancing procedures, set high and low temperature alarm setpoints, set high and
low pressure alarm points based on initital clean filter static pressures.
3.06 TESTING, CERTIFICATION, AND IN-SERVICE TRAINING
A. Upon completion of installation and sterilization of all rooms by owner, system manufacturer will
supervise the installation of the filters and test, balance and certify the systems. The complete,
balanced installation, while in the "High/Operating" Mode shall be certified by the manufacturer
to be in compliance with Class 5 cleanroom standards as defined in Part 1 "Classification of air
cleanliness" of ISO Standard 14644: 1999 "Cleanrooms and associated controlled environments"
(supercedes Federal Standard 209E titled "Airborne Particulate Cleanliness Classes in Cleanrooms
and Clean Zones" where this same system shall meet Class 100 cleanroom conditions as defined
as an area that must have less than 100 particles of 0.5 micron or larger size per cubic ft. of air).
B. At time of factory testing and certification, manufacturer’s personnel will perform one (1) In-
Service Training Session for the hospital’s operating staff and maintenance personnel.
Manufacturer shall discuss overall system operation, answer questions regarding hospital’s
protocol in relation to system operation, and discuss filter replacement procedures, system
troubleshooting and routine service, maintenance, and parts replacement procedures.
C. After completion, manufacturer shall provide (2) Operation and Maintenance Manuals to Owner
which shall include operating instructions, replacement parts list, control cabinet wiring diagrams,
manufacturer’s warranty, initial particle count test results and Certificate of Compliance to ISO
Standard 14644 Class 5.
Form 2-105, effective 7/2012 Page 11 of 11