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					           Replacement Parts List No. 055227700
                                   Rev. A 03/03




       Westinghouse Rooftop
Combination Heating & Cooling

                                  IK 180
                    Vintage 0, 1, 2, 3, 4
                                                                    Contents

Parts List Revision History ............................................................................................................................ 3

Nomenclature
   Unit Model Number ................................................................................................................................ 4
   Serial Number ....................................................................................................................................... 4

Basic Cooling Unit Assembly- Compressor, Condenser, Evaporator
     Diagram ................................................................................................................................................. 5
     Components- Compressors and Accessories ....................................................................................... 6
     Components- Evaporator Section .......................................................................................................... 7
     Components- Condenser Section .......................................................................................................... 8

Main Control Box ..................................................................................................................................... 9, 10

Electric Heat Components- Heaters, Temperature Cutout, Fused Link ....................................................... 11

Accessory Packages ................................................................................................................................... 11

Accessory Thermostat ................................................................................................................................ 11

Furnace- Natural Gas
    Until 3/1978 ......................................................................................................................................... 12
    Furnace- Natural Gas Model PV-400D- 3/1978 and Later ................................................................... 13

Damper and Economizer ............................................................................................................................. 14




                           ®




                                13600 Industrial Park Blvd., P.O. Box 1551, Minneapolis, MN 55440 (763) 553-5330


Rooftop Combination Heat & Cool / IK/ Size 180                                          Rev. A 03/03                         RPL 055227700 / Page 2
                            Parts List Revision History

 Revision     Date                                        Description

    -        1/78    Updated from new RPL issued 10/73.
    A        03/03   Reformatted for electronic distribution. Added Parts List Revision History. Added model
                     number and serial number nomenclature. Part numbers converted to current McQuay mitrol
                     format. Added new art.
                     Page 6- Ref. # 1 p/n for vintages 0-2 208/230V and 380/400/460V changed to CD090A0P &
                     CD090A0Q respectively; p/n for vintages 3,4 208/230V and 380/400/460/575V changed to
                     802003282, 802003275 and 802003279 respectively.
                     Ref. # 2 Added mounting kit for BR compressors.
                     Ref. # 5 Added p/n for BR compressor CC Heaters 070185501, 070185502 and 049768304 for
                     voltages 208/230V, 380/400/460V and 575V respectively.
                     Page 7- 2HP motor pulley 208/230/380/400/460V and 575V units changed to 000378300 and
                     000673900 respectively; 2HP fan pulley p/n changed to 000371200; 2HP belt for vintages 0,1,2
                     p/n corrected to 735028977; 3HP fan pulley p/n changed to 0002740330; 3HP motor pulley p/n
                     changed to 000840700; 5HP motor p/n changed to 802024342; 230/460V motor p/n changed to
                     020950700; 5HP motor pulley p/n changed to 000840700; Fan wheel p/n changed to 073359801.
                     Page 8- Ref. # 4A p/n changed to 735010332.
                              Ref. # N/S steel washer p/n changed to 040500316.
                     Page 10- Ref. # 1 fuse holder 400/460/575v vintages 3,4 p/n changed to 023780219.
                              Ref. # 2 p/n changed to 025860508.
                              Ref. # 5,6 p/n changed to 735021306.
                              Ref. # 9 p/n changed to 047354103.
                              Ref. # 9A p/n changed to 047354102.
                              Ref. # 10 p/n changed to 024578800.
                              Ref. # 13 p/n changed to 037516404.
                     Page 11- Electric Heater fuses 240V, 480V p/n changed to 025860513 and 025860408
                                respectively.
                     Page 12- Ref. # 9 p/n changed to 776375913.




Rooftop Combination Heat & Cool / IK/ Size 180               Rev. A 03/03               RPL 055227700 / Page 3
                                                 Nomenclature

                                                Unit Model Number
                                                        IK 180    A     4   V
Unit Type
                                                                                          Voltage
IK= Rooftop Combination Heat & Cool- Westinghouse
                                                                                          N= 200/60/3
Capacity                                                                                  V= 230/60/3
                                                                                          R=460/60/3
180= 18,000 BTU Nominal
                                                                                          D=575/60/3
Heater Code                                                                               F=380/400/50/3
A= Cooling Only
B= 1- Stage Furnace, Aluminized Heat Exchanger                                               Vintage
C= 2- Stage Furnace, Aluminized Heat Exchanger                                               0
D= 1- Stage Furnace, Stainless Steel Heat Exchanger                                          1
E= 2- Stage Furnace, Stainless Steel Heat Exchanger                                          2
G= 1- Stage Electric Heat: 16 KW Nominal                                                     3
K= 2- Stage Electric Heat: 32 KW Nominal                                                     4
P= 3- Stage Electric Heat: 48 KW Nominal
Q= 4- Stage Electric Heat: 64 KW Nominal




                                                      Serial Number
                                                        A R      1234
Month of Manufacture
A= Jan. E= May I= Sep.                                                                 Serial Number
B= Feb. F= Jun. J= Oct.
C= Mar. G= Jul.   K= Nov.
D= Apr. H= Aug. L= Dec.

Year of Manufacture
H= 1963       M= 1968        R= 1973      W= 1978
I= 1964       N= 1969        S= 1974      X= 1979
J= 1965       O= 1970        T= 1975      Y= 1980
K= 1966       P= 1971        U= 1976      Z= 1981
L= 1967       Q= 1972        V= 1977      A= 1982




Rooftop Combination Heat & Cool / IK/ Size 180                   Rev. A 03/03   RPL 055227700 / Page 4
                         Basic Cooling Unit Assembly
                           Compressor, Condenser, Evaporator
                                       Diagram




                                                                    Control Box
      9C 9B 9A


                                                                                      5


      8




                                                                                      6




                                                                                   7 7A

                                                                4
                                                        3
                                   10        2
                                                 1




Rooftop Combination Heat & Cool / IK/ Size 180   Rev. A 03/03           RPL 055227700 / Page 5
                                Basic Cooling Unit Assembly
                                       Compressors and Accessories
                                              Components

  Ref.    Description                                                       Specification          Part              Vintage
  No.                                                                                             Number          0,1,2    3,4
   1      Compressor
            208/230/60/3                                       CD090                            CD090A0P            2
            380/400/50/3 & 460/60/3                            CD090                            CD090A0Q            2
          Compressor 1
            208/230/60/3                               BRE2-0750-TFC                            802003282                      2
            380/400/50/3 & 460/60/3                    BRE2-0750-TFD                            802003275                      2
            575/60/3                                   BRE2-0750-TFE                            802003279                      2
    2     Mounting Components- CD Compressor 1
            Bushing- Neoprene                                                                   735038135           8
            Spacer                                                                              735224901           8
            Washer- Neoprene                                                                    735043539           8
            Washer- Steel                                                                       735043428           8
            Cap Screw                                                                           735033221           8
          Mounting Components- Retrofit (BR) Compressor 1
            Mounting Kit                                                                        735074310                      2
          Mounting Components- CH Compressors
            Bushing- Neoprene                                                                   735038159                      8
            Spacer                                                                              735024606                      8
            Washer- Neoprene                                                                    735043539                      8
            Washer- Steel                                                                       735043428                      8
            Cap Screw                                                                           735033223                      8
    3     Crankcase Heater- Retrofit (BR) Compressors
            230V                                                                                070185501                      2
            480V                                                                                070185502                      2
            575V                                                                                049768304                      2
          Crankcase Heater- CD Compressors
            230V- CD Compressors                                                                735064417           2
            460V- CD Compressors                                                                735064418           2
          Crankcase Heater- CH Compressors
            230V- CH Compressor                                                                 744316301                      2
            460V- CH Compressor                                                                 744316302                      2
            575V- CH Compressor                                                                 744316303                      2
    4     High Pressure Cutout                            1HP & 2HP                             735001622           2          2
    5     Thermostat- Low Refrigerant Temperature                 RT                            744148502           1          1
   N/S    Motor Protector- Retrofit (BR) Compressors                                           071-0528-02                     2
   N/S    Transformer
            200V to 230V                                                                        735003583          N/A         1
            380/400/460V to 230V                                                                735009441           1          1
            575V to 230V                                                                        735009425          N/A         1
 N/S= Not Shown on Diagram.
 N/A= Not Applicable.
 1
   These Copeland BR retrofit compressors require repiping and new mounting. If an original Westinghouse CH (vintages 3, 4) compres-
 sor is being retrofitted, order a mounting kit (Ref. # 2) as well.




Rooftop Combination Heat & Cool / IK/ Size 180                          Rev. A 03/03                   RPL 055227700 / Page 6
                                   Basic Cooling Unit Assembly
                                                      Evaporator Section
                                                         Components
   Ref.     Description                                                                Specification Part     Vintage
   No.                                                                                             Number 0,1,2 3, 4
    6       Coil- 2 Circuit                                                  w/Distributors & TXV 759799501 1 2     1
    7       Expansion Valve                                                                       735045052  2      2
   7A       Distributor- Upper                                                                    735061510  1      1
            Distributor- Lower                                                                    735051330  1      1
   N/S      Orifice- Distributor                                                                  735051530  2      2
   N/S      Wheel- Evaporator Fan                                                                 073359801  2      2
   N/S      Shaft- Evaporator Fan                                                                 735054233  1      1
   N/S      Bearing- Fan Shaft                                                                    735014103  2      2
   N/S      Bearing Bracket- Fan Shaft                                                            735212611  2      2
   N/S      Housing- Evaporator Fan
               Drive End                                                                                    735219717            1           1
               Opposite Drive End                                                                           735219718            1           1
   N/S      Inlet Ring, Evaporator Fan- Both Housings                                                       776179105            2           2
   N/S      Fan Cutoff- Both Housings                                                                       724755603            2           2
   N/S      Fan Motor- 2 HP                                                                1750 RPM
               200/60/3                                                                                     735010615          N/A           1
               230/460/60/3 & 380/400/50/3                                                                  735010611           1            1
               575/60/3                                                                                     735010916          N/A           1
            Motor Pulley- 2 HP 200/230/380/400/460V Motor                              1VP56 X 5/8"         000378300           1            1
            Motor Pulley- 2 HP 575V Motor                                              1VP56 X 7/8"         000673900          N/A           1
            Fan Pulley- 3 HP Motor                                                       BK80 X 1"          000371200           1            1
            Belt- 2 HP Motor                                                                   B53          735028977           1            1
   N/S      Fan Motor- 3 HP                                                              1750 RPM
               200/60/3                                                                             735010910                  N/A           1
               230/460/60/3                                                                         735010908                   1            1
            Motor Pulley- 3 HP Motor                                                 1VP56 X 1-1/8" 000840700                   1            1
            Fan Pulley- 3 HP Motor                                                       BK80 X 1" 000371200                    1            1
            Belt- 3 HP Motor                                                                        735028972                   1            1
   N/S      Fan Motor- 5 HP                                                              1750 RPM
               200/60/3                                                                             802024342                  N/A           1
               230/460/60/3                                                                         020950700                   1            1
            Motor Pulley- 5 HP Motor                                                 1VP56 X 1-1/8" 000840700                   1            1
            Fan Pulley- 5 HP Motor                                                       BK70 X 1" 735037719                    1            1
            Belt- 5 HP Motor
               200V Units                                                                                   735028972          N/A           1
               230/460V Units                                                                               735077517           1            1



  N/S= Not Shown on Diagram.
  N/A= Not Applicable.
  2
    This is a retrofit coil and includes new TXV, distributors and orifices. The original coil used upper distributor p/n 735051322, lower
    distributor p/n 735051314 and orifices 735051506.




Rooftop Combination Heat & Cool / IK/ Size 180                                 Rev. A 03/03                      RPL 055227700 / Page 7
                                   Basic Cooling Unit Assembly
                                                      Condenser Section
                                                        Components

   Ref.     Description                                                                 Specification      Part    Vintage
   No.                                                                                                   Number 0,1,2 3, 4
    8       Propeller- Condenser Fan                                                                    735023716 3      3
   9A       Motor- Condenser Fan                                                           All Voltages 735010332 3      3
   9B       Rain Shield- Condenser Fan Motor                                                            735632001 3      3
   9C       Grille- Condenser Fan                                                                       735073510 3
            Grille- Condenser Fan                                                                       735083902        3
    10      Coils
              Upper Coil                                                                                     759799401           13        1
              Lower Coil                                                                                     759799402           13        1
   N/S      Mounting Components- Condenser Fan
              Bracket- Motor                                                             2- Arm Half 759642703                    3        3
              Bracket- Motor                                                             1- Arm Half 759642704                    3        3
              Grommet                                                                                 735038120                   3        3
              Washer- Steel                                                      1-1/4" OD x 3/8" ID 735043279                    3        3
              Jam Nut                                                                       3/8" x 16 735030003                   3        3
              Washer- Steel                                                         1" OD x 7/16" ID 040500316                    3        3
              Cap Nut                                                                       3/8" x 16 735030203                   3        3




  N/S= Not Shown on Diagram.
  N/A= Not Applicable.
  3
    The original coil was a single two circuit assembly. To replace an original coil both the upper and lower coils listed above are required.
  Minor piping is required for retrofit.




Rooftop Combination Heat & Cool / IK/ Size 180                                 Rev. A 03/03                     RPL 055227700 / Page 8
                                                Main Control Box
                                                             Diagram


                                     Resistor        5   7                  6        7                    8
     2                   1     4                                                                                    3B

                                                                                                              . . . . . . . . . . . .
              Fuses                                                                                           . . . . . . . . . . . .
                                       1 HR                   2 CR                              5M        A 1 2 D 3 S 4 M R UC 112



                                       2 HR                   1 FR                         11             12                        13


                                      3C                                                                                           CAP
                                                                                 1 CR
                                                                                                     1M             2M
                               __     ____ __
                               _
    2A 1A                      __     ____ __                        24V
                               _                                     Fuse
                               UU      AD56          789 16          3.2A                            9    9A 10
                     3

                                3D        ŽR     •
                                          •H1   •                               10L       20L     30L         40L    50L    60L
                                          •H2   •              TA
                                          •C1   •
                                          •C2   •
                                          •G    •
                      3A                  •RM   •                                                 15
                                          •WM   •                               17
                                                                     14
                                          •U    •
                                          •X    •                                        CB



     Ref.    Sch.            Description                                    Specification                  Part            Unit Vintage
     No.     Sym.                                                                                         Number           0,1,2 3, 4
      1                      Fuse Holder
                               200/230V                                                                  735003705          1
                               200/230V                                                                  735003714                  1
                               400/460/575V                                                              735003702          1
                               400/460/575V                                                              023780219                  1
      1A                     Fuse Holder- 400/460/575V                                                   735003721         N/A      1
       2                     Fuse- 200/230V                                                              735045521          3
                             Fuse- 200/230V                                                              025860508                  3
                             Fuse- 400/460/575V                                          10 Amp          735045520          3       3
                             Fuse- 400'/460/575V                                         12 Amp          735045505         N/A      3
      2A                     Fuse- 400/460/575V                                          15 Amp          735045510         N/A      1
    N/A= Not Applicable.




Rooftop Combination Heat & Cool / IK/ Size 180                            Rev. A 03/03                          RPL 055227700 / Page 9
                                         Main Control Box
                                         Components, Continued


    Ref.     Sch.          Description                      Specification      Part     Unit Vintage
    No.      Sym.                                                            Number     0,1,2 3, 4
     3                     Power Block                                      735008001     1      1
    3A                     Terminal Connection                              735049602     3
                           Terminal Connection                              735049606            3
     3B                    Terminal Block                                   735040812     1      1
     3C                    Terminal Block                                   735041132     2
                           Terminal Block                                   735084010            2
     3D                    Terminal Block                                   735040710     1
                           Terminal Block                                   735040730            1
      4                    Resister- 50 OHM        OHMITE 02000/E25-50A5    735003203     1      1
      5 1HR, 2HR           Relay- Heating                                   735021306     2      2
      6   2CR              Relay- Cooling                                   735021306     1      1
          1FR              Relay- Fan                                       735021306     1      1
      7                    Receptacle- Relay                                735021317     4      4
      8    5M              Contactor- Indoor Fan Motor                      735020606     1      1
      9                    Fuse Holder                                24V   047354103     1      1
     9A                    Adapter                                          047354102     1      1
     10                    Fuse                                  3.2A/24V   024578800     1      1
     11   1CR              Relay- Cooling                                   735020002     1      1
     12 1M, 2M             Contactor- Compressor                            735085002     2      2
     13   CAP              Capacitor- Cond. Fan Motor       5.7MFD/ 370V    037516404     3      3
     14    TA              Thermostat- Low Ambient                          735002135     1      1
     15 10L- 60L           Overload- Compressor
                              200/60/3                                      735085114   N/A     6
                              208/230/60/3                                  735009314    6
                              208/230/60/3                                  735085112           6
                              380/400/50/3 & 460/60/3                       735009304    6
                              380/400/50/3 & 460/60/3                       735009319           6
                              575/60/3                                      735085111           6
     16                    Transformer- Control                24V 45VA     735003501    1      1
     17       CB           Circuit Breaker                        .15 Amp   735018609    1      1




    N/A= Not Applicable.




Rooftop Combination Heat & Cool / IK/ Size 180              Rev. A 03/03       RPL 055227700 / Page 10
                            Electric Heat Components
                        Heaters, Temperature Cutout, Fused Link

                       Part                           Specification       Part
                       Description                                       Number
                       Booster Heater
                          240 V                                         735011354
                          480 V                                         735011355
                       Fuse Link                     Opens 283° F       735012414
                       Contactor                     40 A @ 240 V       735085002
                       Thermostat- Limit      170° Open/120° Close      735001841
                       Buss Bar                                         735777701
                       Terminal Connector                               735249604
                       Insulator
                          1-½" Long                                     735700702
                          2" Long                                       735700703
                          2-½" Long                                     735700704
                       Fuses                            240 V, 50 A     025860513
                                                        480 V, 25 A     025860408
                       Fuse Clips                            250 V      735004307
                                                             600 V      735004306



                                 Accessory Packages
                        Part                                               Part
                        Description                                      Number
                        Time Delay Relay Kit                            744149003
                           Replacement Relay Only                       735005920
                        Fuse Box Door Interlock- 230V                   744028801
                           Replacement Solenoid                         735488101
                        Fuse Box Door Interlock- 460V                   744023802
                           Replacement Solenoid                         735488102
                        Outdoor Thermostat to Stage Electric Heater     735659502
                           Replacement Thermostat                       735002136
                        Anti- Short Cycling Device                      735832102
                           Replacement Time Delay Relay                 735005920
                        Remote Control Center- Less Potentiometer       735651002
                        Remote Control Center- With Potentiometer       735657001
                           Potentiometer- 270 OHM                       735003207




                                Accessory Thermostat
                        Part                                               Part
                        Description                                      Number
                        1- Stage Cool Only                              743884301
                        1- Stage Cool/1- Stage Heat                     735079203
                        1- Stage Cool/2- Stage Heat                     735079205
                        2- Stage Cool Only                              735079208
                        2- Stage Cool/1- Stage Heat                     735079204
                        2- Stage Cool/2- Stage Heat                     735079206



Rooftop Combination Heat & Cool / IK/ Size 180           Rev. A 03/03          RPL 055227700 / Page 11
                                        Furnace- Natural Gas
                                            Until 3/1978

                                                       2            1                      9



                                 3                                                                      8




                             4                                                                              7




                                                                                                    6

                                                           5

           Ref.      Part                                                              Specification               Part
           No.       Description                                                                                 Number
            1        Transformer- 24V                                             BASO Y625A-01                 776280716
            2        Fan Switch (THR)                                          M-H # S876A1024-2                776280715
            3        Exhaust Switch (ER)                                       M-H# R8225B-1007                 776280714
            4        Gas Valve- 1"                                                BASO H91MG-3                  776280720
            5        Pressure Regulator
                         1- Stage                                                Maxitrol RV53- 1"              776280721
                         2- Stage                                               Maxitrol SR600- 1"              776280724
            6        Limit Control                                      Sterling # 20400D123-171                776280710
            7        Manual Valve- Main                                                           1"            776280708
            8        Pilot Valve                                                    Essex Int'l 2 Pl.           776280722
            9        Ignition Control                                             BASO G19BG-5                  776375913
           N/S       Pilot Burner                                           BASO J640DHA-6721                   776280711
           N/S       Pilot Orifice                                                              .021            776280725
           N/S       Thermocouple                                                 BASO K16CA30                  776280712
           N/S       Igniter- Glow Coil                                           BASO Y80AA-36                 776280713
           N/S       Burner Orifice (11 required)                                          #44 Drill            776280727
                                                                                                                     4
           N/S       Main Burner (11 required)                                 order by description
           N/S       Switch- Pilot Pressure (GP)                         McQuay Norris 132-5CF                  776280719
           N/S       Ventor Assembly- Motor & Fan                                                               776280718
                         Fan Wheel Only                                                                         776280750
                         Fan Motor Only                                                                         JB5032NV
           N/S       Control- Ventor                                                                            776280717
           N/S       Heat Exchanger (2 Required)                              250,000 BTUH Input
                         Aluminized                                                                             776280703
                         Stainless Steel                                                                        776280704
          N/S= Not Shown on Diagram.
          4
            Provide all information on furnace dataplate to ID burners.
          NOTE: There was an LP conversion kit (p/n 735777203) available at one time. The kit and all of its components are
          discontinued and no longer available.


Rooftop Combination Heat & Cool / IK/ Size 180                          Rev. A 03/03                 RPL 055227700 / Page 12
                   Furnace- Natural Gas Model PV-400D
                            3/1978 and Later
                                                       14       11

                                13



                                15                                         3




                                                                           12
                                 16
                                                                           6

                                 9


                                8



                                     10                         17         2


                                                   4
                                          1                 5         7



           Ref.    Part                                                                 Part
           No.     Description                                                        Number
             1     Gas Valve                                                         776375910
             2     Valve- Manual Shutoff                                             776375912
             3     Ignition Control                                                  776375913
             4     Probe Assembly                                                    776375914
             5     Probe Lead                                                        776375915
             6     Pilot Valve- 100% Shutoff                                         776375916
             7     Regulator                                                         776375918
             8     Transformer                                                       776375919
             9     Timer Switch                                                      776375920
            10     Relay- Draftor                                                    776375921
            11     Control- Ventor (Draftor Thermal Switch)                          776375922
            12     Limit Control- Main                                               776375923
            13     Housing- Ventor Fan                                               776375924
            14     Wheel- Ventor Fan                                                 776375925
            15     Motor- Ventor Fan                                                 776375926
            16     Capacitor- Ventor Fan Motor                                       776375927
            17     High Limit Control                                                776375928
           N/S     Heat Exchanger
                       Stainless Steel                                               776375906
                       Aluminized                                                    776375905
          N/S= Not Shown on Diagram.



Rooftop Combination Heat & Cool / IK/ Size 180              Rev. A 03/03       RPL 055227700 / Page 13
                                  Damper and Economizer

                                     6           7




                                                                                1

                              5          4                       2
                                             3




         Ref.    Part                                          Specification           Part
         No.     Description                                                         Number
          1      Relief Damper Assembly                                             759697301
                     Grille- Relief Damper                                          759696901
          2      Return Air Damper Assembly                                         776269901
          3      Damper Arm- Return Air Damper                                      744188402
          4      Ball Joints- 2 Required                                            735012601
          5      Damper Motor- Proportional Control Penn M80BCA-1, 20VA, 24V        735049103
          6      Thermostat (2HT)               MH L6008C; SPDT; 40° - 180°F        735005208
          7      Thermostat (MAT)                    MH 7991A1004; 0° - 100°F       735009502
         N/S     Relay- SPDT                                RBM129990-1440          735020010
         N/S     Fresh Air Damper Assembly                                          759646604
                     Grille- Relief Damper                                          759696901
                     Damper Arm- Fresh Air Damper                                   744188401
        N/S= Not Shown on Diagram.




Rooftop Combination Heat & Cool / IK/ Size 180        Rev. A 03/03          RPL 055227700 / Page 14

				
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