Replacement Parts List No. 055227900 Revision A 03/2003 Westinghouse Rooftop Heating and Cooling IK 300 Vintage 0,, 2, 3, 4, 5 Last Manufactured: 975 To find your Daikin Applied parts distributor, call -800-377-2787 or visit www.daikinapplied.com
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 Diagram...9 Components...0 Electric Heat Components- Heaters, Temperature Cutout, Fused Link... Accessory Packages... Accessory Thermostat... Furnace- Natural Gas Until 3/978...2 Furnace- Natural Gas Model PV-250D- 3/978 and Later...3 Damper and Economizer...4 RPL 055227900 / Page 2
Parts List Revision History Revision Date Description - 7/8 Updated from new RPL issued 9/78. 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- Added retrofit compressors, CC heaters, mounting parts, and motor protector incorporating information from PIL 7-02. Ref. # 5 CH compressor 230V CC Heater p/n changed to 73504239. Ref. # N/S Low temp. stat p/n changed to 73500237. Page 7- Ref. # N/S 5 HP fan motor 200V p/n changed to 802024342; 5 HP fan motor 230/460V p/n changed to 020950700; 5 HP motor pulley p/n changed to 000840700; Corrected description for 7.5HP motor pulley and belt (they were transposed); 7.5 & 0 HP motor pulley p/n changed to 025076300; Drive end and opp. drive end fan bearing p/n changed to 04738402 and 000829904 respectively. Page 8- Ref. # 4A p/n changed to 07099005. Ref. # N/S steel washer p/n changed to 04050036. Page 0- Ref. # p/n for vintage 4,5 400/460/575 fuse holder changed to 02378029. Ref. # 2 p/n for 400/460/575V fuse p/n changed to 025860407. Ref. # 5,6 p/n changed to 73502306. Ref. # 9 p/n changed to 04735403. Ref. # 9A p/n changed to 04735402. Ref. # 0 p/n changed to 024578800. Ref. # 2 p/n for 200/230V changed to 02754205; p/n for 400/460/575 vintage 0-3 changed to 02754205. Ref. # 3 p/n changed to 03756404. Ref. # 5 p/n for 208/230V vintage 0-3 changed to 7350855; p/n for 400/460V vintage 0-3 changed to 7350850. Ref. # 7 p/n changed to 744408402. Page - 240V 50A fuse p/n changed to 02586053; 480V 25A fuse p/n changed to 025860408. Page 2- Ref. # 9 p/n changed to 77637593. Page 3- Added new. Page 4- Ref. # 5 p/n changed to 73504903. Daikin Applied, 3600 Industrial Park Blvd., P.O. Box 55, Minneapolis, MN 55440 (763) 553-5330 RPL 055227900 / Page 3
Nomenclature Unit Model Number IK 300 A 4 V Unit Type IK= Rooftop Combination Heat & Cool- Westinghouse Capacity 300= 30,000 BTU Nominal Heater Code A= Cooling Only B= - Stage Furnace, Aluminized Heat Exchanger C= 2- Stage Furnace, Aluminized Heat Exchanger D= - Stage Furnace, Stainless Steel Heat Exchanger E= 2- Stage Furnace, Stainless Steel Heat Exchanger G= - Stage Electric Heat: 6 KW Nominal K= 2- Stage Electric Heat: 32 KW Nominal P= 3- Stage Electric Heat: 48 KW Nominal Q= 4- Stage Electric Heat: 64 KW Nominal R= 5- Stage Electric Heat: 80 KW Nominal S= 6- Stage Electric Heat: 96 KW Nominal T= 7- Stage Electric Heat: 2 KW Nominal U= 8- Stage Electric Heat: 28 KW Nominal Voltage N= 200/60/3 V= 230/60/3 R= 460/60/3 D= 575/60/3 F= 380/400/50/3 Vintage 0 2 3 4 5 Serial Number A R 234 Month of Manufcature A= Jan. E= May I= Sep. B= Feb. F= Jun. J= Oct. C= Mar. G= Jul. K= Nov. D= Apr. H= Aug. L= Dec. Serial Number Year of Manufcature H= 963 M= 968 R= 973 W= 978 I= 964 N= 969 S= 974 X= 979 J= 965 O= 970 T= 975 Y= 980 K= 966 P= 97 U= 976 Z= 98 L= 967 Q= 972 V= 977 A= 982 RPL 055227900 / Page 4
Basic Cooling Unit Assembly Compressor, Condenser, Evaporator Diagram 4C 4B 4A Control Box 3 8 9 9A 0 2 5 6 RPL 055227900 / Page 5
Basic Cooling Unit Assembly Compressors and Accessories Components Ref. Description Specification Part Unit Vintage No. Number 0, 2, 3 4 5 Compressor 208/230/60/3 BRK2-200-TFC 07085403 2 2 2 380/400/50/3 & 460/60/3 BRK2-200-TFD 07085404 2 2 2 2 Mounting Components- Retrofit (BR) Compressor Mounting Kit 73507430 2 2 2 Mounting Plate 070805804 2 2 2 Mounting Plate 070805805 4 4 4 Mounting Components- Original (CB or CH) Compressor Bushing, Neoprene- CB Compressors 735008702 4 N/A N/A Bushing, Neoprene- CH Compressors 73503855 N/A 4 4 Spacer- CB Compressors 7350566 4 N/A N/A Spacer- CH Compressors 73502490 N/A 4 4 Washer, Neoprene- CH Compressors 735063609 N/A 4 4 Washer, Steel- CB Compressors 735043232 4 N/A N/A Washer, Steel- CH Compressors 735043428 N/A 4 4 Washer, Lock- CB Compressors 73504338 4 N/A N/A Cap Screw- CB Compressors 735033438 4 N/A N/A Cap Screw- CH Compressors 735033223 N/A 4 4 5 Crankcase Heater- Retrofit (BR) Compressors 230V 0708550 2 2 2 480V 07085502 2 2 2 575V 049768304 2 2 2 Crankcase Heater- Original (CB or CH) Compressors 230V- CB Compressors 7350424 2 N/A N/A 460V- CB Compressors 7350425 2 N/A N/A 230V- CH Compressor # 73504239 N/A 230V- CH Compressor #2 7443630 N/A 460V- CH Compressor # 744363 N/A 460V- CH Compressor #2 7443632 N/A 575V- CH Compressor # 74436325 N/A 575V- CH Compressor #2 74436326 N/A 6 High Pressure Cutout HP & 2HP 73500622 2 2 2 N/S Motor Protector- Retrofit (BR) Compressors 07-0528-02 2 2 2 N/S Transformer 200V to 230V 735003564 N/A 380/400/460V to 230V 735009430 575V to 230V 735009426 N/A N/A N/S Thermostat- Low Refrigerant Temperature RT 73500237 N/S= Not Shown on Diagram. N/A= Not Applicable. These Copeland BR retrofit compressors require repiping and new mounting. If an original Westinghouse CH compressor is being retrofitted, a hardware kit p/n 07086309 must also be ordered (one for EACH compressor). The retrofit mounting kit and plates listed above (Ref# 2) ARE included in the hardware kit. If a CB compressor is installed contact East Coast Compressor. RPL 055227900 / Page 6
Basic Cooling Unit Assembly Evaporator Section Components Ref. Description Specification Part Unit Vintage No. Number 0, 2, 3 4 5 8 Coil- 2 Circuit w/distributors & TXV 75970680 Coil- 2 Circuit w/distributors & TXV 759789703 9 Expansion Valve 735045054 2 2 2 9A Distributor- Upper 73505509 Distributor- Upper 73505440 Distributor- Lower 73505328 Distributor- Lower 73506609 N/S Orifice- Distributor 73505545 Orifice- Distributor 73505569 N/S Wheel- Evaporator Fan 735037623 2 2 2 N/S Shaft- Evaporator Fan 735054236 N/S Bearing- Fan Shaft Drive End 04738402 Opposite Drive End 000829904 N/S Bearing Bracket- Fan Shaft Drive End 74434340 Opposite Drive End 7352262 N/S Housing- Evaporator Fan Drive End 759679602 N/S Opposite Drive End 75967950 Inlet Ring- Evaporator Fan Drive End 759679403 Drive End 759830802 Opposite Drive End 759679402 Opposite Drive End 75983080 N/S Fan Cutoff- Both Housings 75967770 2 2 2 N/S Fan Motor- 5 HP 750 RPM 200/60/3 802024342 N/A 230/460/60/3 020950700 380/45/50/3 73500907 Motor Pulley- 5 HP Motor VP56 X -/8" 000840700 Fan Pulley- 5 HP Motor BK90 X " 73503774 Belt- 5 HP Motor BX55 7350775 N/S Fan Motor- 7.5 HP 750 RPM 200/60/3 7350092 N/A 230/460/60/3 73500909 Motor Pulley- 7.5 HP Motor 2LVP48B60 X -3/8" 025076300 Fan Pulley- 7.5 HP Motor 2BK90 X " 735037760 Belt- 7.5 HP Motor BX56 735028997 2 2 2 N/S Fan Motor- 0 HP- 230/460/60/3 750 RPM 73500727 Motor Pulley- 0 HP Motor 2LVP48B60 X -3/8" 025076300 Fan Pulley- 0 HP Motor 2BK90 X " 735037760 Belt- 0 HP Motor BX56 735028997 2 2 2 N/S= Not Shown on Diagram. N/A= Not Applicable. RPL 055227900 / Page 7
Basic Cooling Unit Assembly Condenser Section Components Ref. Description Specification Part Unit Vintage No. Number 0, 2, 3 4 5 3 Propeller- Condenser Fan 73502377 3 3 3 4A Motor- Condenser Fan All Voltages 07099005 3 3 3 4B Rain Shield- Condenser Fan Motor 73563200 3 3 3 4C Grille- Condenser Fan 73507350 3 Grille- Condenser Fan 735083902 3 3 0 Coils Upper Coil 77628800 Upper Coil 776289902 Lower Coil 776288002 Lower Coil 77628990 N/S Mounting Components- Condenser Fan Bracket- Motor 2- Arm Half 759642703 3 3 3 Bracket- Motor - Arm Half 759642704 3 3 3 Grommet 73503820 3 3 3 Washer- Steel -/4" OD x 3/8" ID 735043379 3 3 3 Jam Nut 3/8" x 6 735030003 3 3 3 Washer- Steel " OD x 7/6" ID 04050036 3 3 3 Cap Nut 3/8" x 6 735030203 3 3 3 N/S= Not Shown on Diagram. RPL 055227900 / Page 8
Main Control Box Diagram 3 2 CB 4 Resistor 5 7 6 7 8 2 22 Fuses HR 2 CR CR 5M........................ A 2 D 3 S 4 M R UC 2 2 HR FR 2 7 8 20 23 _ UU AD56 789 6 M 2 M 24V Fuse 3.2A 9 0 GR 2 GR 24 ŽR Ž ŽH Ž ŽH2 Ž ŽC Ž ŽC2 Ž ŽG Ž ŽRM Ž ŽWM Ž ŽU Ž ŽX Ž TA 4 2 TA 4A 0L 20L 30L 40L 50L 60L 5 22 3 CAP RPL 055227900 / Page 9
Main Control Box Components Ref. Sch. Description Specification Part Unit Vintage No. Sym. Number 0,,2,3 4,5 Fuse Holder 200/230V 735003709 200/230V 73500377 400/460/575V 735003702 400/460/575V 02378029 2 Fuse- 200/230V 40 Amp 73504555 3 3 Fuse- 400/460/575V 20 Amp 025860407 3 3 3 CB Circuit Breaker 5 Amp 73508609 4 Resister- 50 OHM OHMITE 02000/E25-50A5 735003203 5 HR, 2HR Relay- Heating 73502306 2 2 6 2CR Relay- Cooling 73502306 FR Relay- Fan 73502306 7 Receptacle- Relay 7350237 4 4 8 5M Contactor- Indoor Fan Motor 73502062 9 Fuse Holder 24V 04735403 Adapter 04735402 0 Fuse 3.2A/24V 024578800 CR Relay- Cooling 735020605 2 M, 2M Contactor- Compressor 200/230V 02754205 2 2 400/460/575V 02754205 2 400/460/575V 735085002 2 3 CAP Capacitor- Cond. Fan Motor 5.7MFD/ 370V 03756404 3 3 4 TA Thermostat- Low Ambient 73500252 4A 2TA Thermostat- Low Ambient 73500238 5 0L- 60L Overload- Compressor 200/60/3 7350855 N/A 6 208/230/60/3 7350855 6 208/230/60/3 73508523 6 380/400/50/3 & 460/60/3 7350850 6 6 6 Transformer- Control 24V 45VA 73500350 7 GR Relay- Guardistor 744408402 N/A 8 Transformer- Guardistor 735003509 N/A 20 Power Block 735008004 Terminal Connection 735249603 3 3 2 Terminal Block 73504082 22 Terminal Block 7350403 2 2 23 Terminal Block 7350432 24 Terminal Block 73504070 RPL 055227900 / Page 0
Electric Heat Components Heaters, Temperature Cutout, Fused Link Part Specification Part Description Number Booster Heater 240 V 735033 480 V 7350335 Contactor 40 A @ 240 V 735022405 Thermostat- Limit 70 Open/20 Close 7350084 Buss Bar 73579080 Terminal Connector 735249604 Insulator -½" Long 735700702 2" Long 735700703 2-½" Long 735700704 Fuses 240 V, 50 A 02586053 480 V, 25 A 025860408 Fuse Clips 250 V 735004307 600 V 735004306 Accessory Packages Part Part Description Number Time Delay Relay Kit 74449003 Replacement Relay Only 735005920 Fuse Box Door Interlock- 230V 74402880 Replacement Solenoid 7354880 Fuse Box Door Interlock- 460V 744023802 Replacement Solenoid 73548802 Outdoor Thermostat to Stage Electric Heater 735659502 Replacement Thermostat 73500236 Anti- Short Cycling Device 73583202 Replacement Time Delay Relay 735005920 Remote Control Center- Less Potentiometer 73565002 Remote Control Center- With Potentiometer 73565700 Potentiometer- 270 OHM 735003207 Accessory Thermostat Part Part Description Number - Stage Cool Only 74388430 - Stage Cool/- Stage Heat 735079203 - Stage Cool/2- Stage Heat 735079205 2- Stage Cool Only 735079208 2- Stage Cool/- Stage Heat 735079204 2- Stage Cool/2- Stage Heat 735079206 RPL 055227900 / Page
Furnace- Natural Gas Until 3/978 2 9 3 8 4 7 6 5 Ref. Part Specification Part No. Description Number Transformer- 24V BASO Y625A-0 77628076 2 Fan Switch (THR) M-H # S876A024-2 77628075 3 Exhaust Switch (ER) M-H# R8225B-007 77628074 4 Gas Valve- ¾" BASO H94-7 776280705 5 Pressure Regulator - Stage Maxitrol RV52- ¾" 776280706 2- Stage Maxitrol SR500- ¾" 776280723 6 Limit Control Sterling # 20400D23-7 77628070 7 Manual Valve- Main ¾" 776280707 8 Pilot Valve Essex Int'l 2 Pl. 776280722 9 Ignition Control BASO G9BG-5 77637593 N/S Pilot Burner BASO J640DHA-672 7762807 N/S Pilot Orifice.02 776280725 N/S Thermocouple BASO K6CA30 77628072 N/S Igniter- Glow Coil BASO Y80AA-36 77628073 N/S Burner Orifice ( required) #44 Drill 776280727 N/S Main Burner ( required) order by description 2 N/S Switch- Pilot Pressure (GP) McQuay Norris 32-5CF 77628079 N/S Ventor Assembly- Motor & Fan 77628078 Fan Wheel Only 776280750 Fan Motor Only JB5032NV N/S Control- Ventor 77628077 N/S Heat Exchanger (2 Required) 250,000 BTUH Input Aluminized 77628070 Stainless Steel 776280702 N/S= Not Shown on Diagram. 2 Provide all information on furnace dataplate to ID burners. NOTE: There was an LP conversion kit (p/n 735777205) available at one time. The kit and all of its components are discontinued and no longer available. RPL 055227900 / Page 2
Furnace- Natural Gas Model PV-250D 3/978 and Later 3 4 5 3 6 2 6 9 8 0 7 2 4 5 7 Ref. Part Part No. Description Number Gas Valve 776375909 2 Valve- Manual Shutoff 7763759 3 Ignition Control 77637593 4 Probe Assembly 77637594 5 Probe Lead 77637595 6 Pilot Valve- 00% Shutoff 77637596 7 Regulator 77637597 8 Transformer 77637599 9 Timer Switch 776375920 0 Relay- Draftor 77637592 Control- Ventor (Draftor Thermal Switch) 776375922 2 Limit Control- Main 776375923 3 Housing- Ventor Fan 776375924 4 Wheel- Ventor Fan 776375925 5 Motor- Ventor Fan 776375926 6 Capacitor- Ventor Fan Motor 776375927 7 High Limit Control 776375928 N/S Heat Exchanger Stainless Steel 776375902 Aluminized 77637590 N/S= Not Shown on Diagram. RPL 055227900 / Page 3
Damper and Economizer 6 7 5 4 3 2 Ref. Part Specification Part No. Description Number Relief Damper Assembly 759697302 Grille- Relief Damper 759696902 2 Return Air Damper Assembly 776269902 3 Damper Arm- Return Air Damper 74488402 4 Ball Joints- 2 Required 7350260 5 Damper Motor- Proportional Control Penn M80BCA-, 20VA, 24V 73504903 6 Thermostat (2HT) MH L6008C; SPDT; 40-80 F 735005208 7 Thermostat (MAT) MH 799A004; 0-00 F 735009502 N/S Relay- SPDT RBM29990-440 73502000 N/S Fresh Air Damper Assembly 759733002 Grille- Relief Damper 759696902 Damper Arm- Fresh Air Damper 7448840 N/S= Not Shown on Diagram. RPL 055227900 / Page 4