McQuay Climate Control Singer. Rooftop Unit. ER, R 160 Vintage A, B, C, D. Last Manufactured: 1996

Transcription

1 Replacement Parts List No Revision B 07/2007 McQuay Climate Control Singer Rooftop Unit ER, R 160 Vintage A, B, C, D Last Manufactured: 1996 To find your Daikin Applied parts distributor, call or visit

2 Contents Parts List Revision History... 3 Nomenclature Model Number... 4 Serial Number- Prior to Serial Number and later... 4 Electrical Controls - Function, Schematic Symbol, Location... 5 Unit Layout & Panels... 6 Pump Down and Suction Line Filters (Option 8),... 6 Filter Flag (Option D), Solenoid, Firestat... 6 Evaporator Coil and Blower Components... 7 Refrigeration Section- Compressor, HP Switch, LP Switch,Condenser Coil, Condenser Fan and Motor, Condenser Pressure Switch, TXV, Drier,... 8 Gas Heat Section Burner Assy, Pilot & Electrode, Gas Valve, Ventor, Limit Switch, Sight Glass... 9, 10 Manifold, Collector Box, Fluebox, Filter Heat Exchangers Gas Valves- Natural Gas Units- 300,000 btu (N30)...11 Gas Valves- Natural Gas Units- 400,000 btu (N40)...11 Gas Valves- Propane Units- 300,000 btu (P30)...11 Gas Valves- Propane Units- 400,000 btu (P40)...11 Hydronic Heat...11 Electric Heat Section... 12, 13 Economizer Components (Options G & X) Power Exhaust Blower (Option 6) VAV (Option 9) Tracking Damper (Option T) Power Return Blower (Option 7) Controls- Compressor Contactor, Blower Motor Contactor, Terminal Blocks, Fan Motor Capacitors, Transformer, Guard-A-Matic, Relay, Unit Fuses... 18, 19 Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 2

3 Parts List Revision History Revision Date Description - 04/89 Last Revision from Red Bud. A 03/02 Converted to electronic format. Part numbers converted to current McQuay Style. All new drawings used. Added model number and serial number nomenclature definitions. Added Electrical controls table. Added top panels for condenser and blower section, filter door and latch, blower motor access panel, corner post, note about firestat replacement, blower housing, condenser mounting bolts and washers, condenser fan venturi ring and gasketing bead, furnace viewport cover, heat exchangers for "D" vintage, pilot & sensor for N/P40 furnace, ventor motor mounting brackets, manifold pipe for "D" vintage units, flue baffle, flue restrictor, flue gasket, collector box and insulation, hot-water heating coil, steam coil, cleanable economizer filter, economizer filter channel retaining angle, filter cap, economizer rainhood and screws, power exhaust blower components, VAV components, tracking damper components, static and outdoor sensors, power return complete assy part number and blower exploded view, power return bridge support, power return bearing support, discharge air controller and sensor. Updated/changed part numbers for freezestat, evaporator blower wheel, evaporator motors, evaporator drive components, compressor high pressure switch, filter drier, condenser fan motors, condenser pressure switches, condenser coil, pilot & electrode for "D" vintage, ignition controls for "B"C"D" vintages, fan limit switch vintages "A"B"C", furnace filter, all electric heat fuses and contactors, White Rogers spring return economizer motor, power return blower and motor pulleys and belts, power return motor, compressor contactors, blower motor contactor, condenser fan capacitors, guard-a-matic, condenser fan relay, all control fuses. Added option nomenclature to headings. B 07/07 Page 7 - Bubble #6 Blower Wheel part number was changed to Daikin Applied, Industrial Park Blvd., P.O. Box 1551, Minneapolis, MN (763) Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 3

4 Nomenclature Model R= Rooftop Unit Capacity 160= 16 Ton Vintage A, B, C, or D Voltage 0= 208/230/60/3 1= 460/60/3 Heating Section Natural Gas N30= 300 mbh input N40= 400 mbh input Propane P30= 300 mbh input P40= 400 mbh input Hydronic Heat H2W= 2-Row Hot Water H1S= 1-Row Steam H2S= 2-Row Steam Electric Heat 027= 27 KW 040= 40 KW 047= 47 KW 060= 60 KW 080= 80 KW 100= 100 KW Cooling Only 000= Cooling Only Model Number R 160 C 1 N30 1 Options 1= Standard Motor 2= Oversize Motor 8= Suction Line Filter & Pumpdown cycle B= D.S. Switch E= Failure Relay Package G= Horiz. Disch. Economizer T= Tracking Return Air Damper X= Economizer w/spring Return Motor Serial Number (Prior to 1988) 10 Digit Number M 15 4 Digit Number Year Manufactured A= 1974 H= 1981 B= 1975 J= 1982 C= 1976 K= 1983 D= 1977 L= 1984 E= 1978 M= 1985 F= 1979 N= 1986 G= 1980 P= 1987 R= 1988 Week of Manufacture Serial Number (1988 and Later) R Plant Identification R= Red Bud, IL Year Manufactured 88= = = 1990 etc. Sequence Week of Manufacture Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 4

5 Electrical Controls Function, Schematic Symbol, Location Schem. Part Description/ Function Location Page Symbol CPS1-6 Condenser Pressure Switch Condenser Section on Liquid Line 8 GDM1, 2 Compr. Lockout (Guard a matic) Control Box 19 HP1, 2 High Pressure Control Compressor Discharge Line 8 LP1, 2 Low Pressure Control Compressor Suction Line 8 SM Compressor Motor Protector Compressor (integral to compressor) 8 LSV1, 2 Liquid Line Solenoid Valve Condenser Section 6 HGBV Hot Gas Bypass Valve Condenser Section 8 SSC Discharge Air Controller- W7100 Control Box 19 DAS Discharge Air Sensor Control Box 19 TE Enthalpy Control Downstream Side of Fresh Air damper 14 MB Mercury Switch Return Air Damper Linkage 15 FIL Filter Flag Economizer Filter Section 6 FZ Freezestat Downstream Side of Evap. Coil 5 HT3 Firestat Next to Filter Flag 6 HT1,2 High Temp Limit Switch Electric Heat Panel 12, 13 HTL High Temp. Limit- Gas Heat Above Heater 10 HT1 High Temp. Limit- Electric Heat Above Heater 12, 13 RX Relay- Power Exhaust Motor Power Exhaust 15 RD Relay- Damper Economizer 14 Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 5

6 Unit Layout & Panels Controls A B C Heat Access (gas heat panel shown) Compressor/ Condenser Section E D Bub. Part Description Part Number A Condenser Top Panel (Louvered Fan Openings) B Blower Section Top Panel C Filter Door & Latch Assy Latch Only D Blower Motor Access Panel E RH Corner Post for Economizer Pump Down and Suction Line Filters (Option 8), Filter Flag (Option D), Solenoid, Firestat N/S Liquid Line Solenoid Valve N/S Solenoid Valve Coil N/S Suction Line Filter N/S Filter Flag N/S Firestat 180 Supply Air- Honeywell L4097B Return Air- Honeywell L4029E This part has been discontinued since There is no replacement, but it is okay for the unit to run without this stat.. Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 6

7 Evaporator Coil and Blower Components Diagram A Freezestat- Ranco Blower Wheel Shaft- 1-3/16" Diameter- before serial no. E Shaft- 1-3/16" Diameter- after serial no. E Key, Blower Shaft- Woodruff- before serial no. E Key, Blower Shaft- ¼" x ¼" x 2" Allied- after serial no. E Bearing- before serial no. E40 1-3/16" Bearing- after serial no. E " A Bearing Collar Screws for Bearing Collar Evaporator Motor Standard Motor (Option Code= 1) 3.0 HP Oversize Motor (Option Code= 2) 5.0 HP Double Oversize Motor (Option Code= 3) 7.5 HP Motor Sheave, 1VP56 X 7/8"- 3.0 HP Motor Motor Sheave, 1VP56 X 1-1/8"- 5.0 HP Motor Motor Sheave, 2VP56 X 1-1/8"- 7.5 HP Motor Blower Sheave- 3.0 & 5.0 HP Motor Before serial no. E40-1BK90 X 1-3/16" After serial no. E40-1BK90 X 1.00" Blower Sheave- 7.5 HP Motor Before serial no. E40-2BK90 X 1-3/16" After serial no. E40-2BK90 X 1.00" Belt, B & 5.0 HP Motor Belt, B HP Motor Evaporator Coil Blower Housing Cutoff Plate Tri Arm Bracket N/S Top Panel- Air Handler Section On 400,000 btu furnaces, the 5.0HP is standard and the 7.5 HP is oversize. Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 7

8 Refrigeration Section Compressor, HP Switch, LP Switch,Condenser Coil, Condenser Fan and Motor, Condenser Pressure Switch, TXV, Drier A 10 H Compressor Compartment 5 Condenser Fan Detail Bub# Part Description H Top Condenser Panel- Front Compressor- 208/230/60- Copeland BRG TFC Compressor- 460/60/3- Copeland BRG TFD N/S Crankcase Heater Low Pressure Switch- TI # 20PS106FA040K010D High Pressure Switch- TI # 20PS037MB425K30K Filter Drier- Liquid Line Sight Glass Condenser Fan Blade- Torin 4- blade (pre serial number K33) Lau 3- blade (serial number K33 and later) Condenser Fan Motor- 1/3 HP 208/230 Volt Volt Mount- Condenser Motor (pre serial number K36) Mount, 4- leg- Condenser Motor (serial no. K36 and later) Slinger- 1/2" bore Pressure Switch- Condenser Adjustable (pre serial number K36) P PSI (serial number K36 and later) PSI (serial number K36 and later) PSI (serial number K36 and later) Expansion Valve- HXVE 7½ STR Bolt- Condenser Mounting Washer- Condenser Mounting Venturi Ring- 6" X 24" A Neoprene Bead Gasket- Venturi Ring (7 ft. per ring) 21' N/S Hot Gas Bypass Valve N/S Coil- Hot Gas Bypass Valve N/S Condenser Coil Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 8

9 Gas Heat Section Burner Assy, Pilot & Electrode, Gas Valve, Ventor, Limit Switch, Sight Glass A 37 39A 39B 37 Gas Valve- See Gas Heat Valves components list 39A Flame Sensor- Vintage D B Coupling, Flame Sensor- Vintage D Burner- Vintages A, B, C Burner- Natural Gas- Vintage D (pre serial number P41) Burner- Propane- Vintage D (pre serial number P41) Burner- 3 sect.- Vint. D 300 mbh furnace (post ser. num. P41) Burner- 3 sect.- Vint. D 400 mbh furnace (post ser. num. P41) A Viewport Cover Spring Retainer- Vintages A, B, C Spring Retainer- Vintage D, 300mbh furnace Spring Retainer- Vintage D, 400mbh furnace Burner Orifice- Vintages A, B, C N30- Orifice # P30- Orifice # N40- Orifice # P40- Orifice # Burner Orifice- Vintage D N30- Orifice # P30- Orifice # N40- Orifice # P40- Orifice # Pilot & Electrode- Vintages A & B Natural (Until Serial Number D50) Propane (Until Serial Number D50) Natural & Propane (after Serial Number D50)- N30, P Natural (after serial no. D50/ before G01)- N Propane (after serial no. D50/ before G01)- P Pilot & Electrode- Vintages B & C Natural & Propane (after Serial no. G01) Pilot & Electrode- Vintage D N/S Pilot Orifice- Vintage C White Rogers A Pilot Orifice- Vintage D- Natural White Rogers F Pilot Orifice- Vintage D- Propane White Rogers F Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 9

10 Gas Heat Section Burner Assy, Pilot & Electrode, Gas Valve, Ventor, Limit Switch, Sight Glass, Continued 46 Ignition Control- Vintages A & B Until Serial Number D50- Penn G After Serial Number D50/Before Serial Number G01 N30, P30, P40- White Rogers N40- Penn G Ignition Control- Vintages B, C- White Rogers Ignition Control- Vintage D- White Rogers N/S Sensor Probe- Vintages A & B N/S Pilot w/sensor for N40/P40 only N/S Limit Switch- All Vintages- Thermo-Disc 60T01B3-L Fan Limit Switch Vintages A, B, C- White Rogers 40TC Vintage D- Honeywell L Ventor Blower Wheel Ventor Housing Ventor Blower Motor- Vintages A, B, C (until s.n. H26)- Fasco C (after s.n. H26)- Fasco A Blower Motor- Vintage D- Fasco N/S Mounting Bracket- Ventor Motor N/S Mounting Bracket Support- Ventor Motor N/S Mounting Bracket- Ventor Motor / Manifold, Collector Box, Fluebox, Filter N/S Manifold Pipe- Vintage D N/S Collector Box Assy Insulation, Collector Box- ¼" x ¾" x 48" Insulation, Collector Box- ¼" x 3½" x 57½" N/S Fluebox Components- Vintage D Flue Baffle Flue Gasket Flue Restrictor N/S Filter N/S Heat Exchanger Vintage A, B, C- 16 Cell Vintage D 12 Cell- N30, P Cell- N40, P Heat Exchangers Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 10

11 Gas Heat Section Gas Valves- Natural Gas Units- 300,000 btu (N30) 37 1 Vintage A- White Rogers 36C Vintages B & C- White Rogers 36C Vintage D- White Rogers 36D Very early "A" Vintage units had Valve White Rogers # 36C If the unit has one of these, replace it with Gas Valves- Natural Gas Units- 400,000 btu (N40) 37 1 Vintage A- White Rogers 36C Vintage B- Honeywell V852A Vintage C- White Rogers 36C Vintage D- White Rogers 36D Very early "A" Vintage units had Valve White Rogers # 36C If the unit has one of these, replace it with Gas Valves- Propane Units- 300,000 btu (P30) 37 1 Vintage A- White Rogers 36C Vintage B- White Rogers 36C Vintage C- White Rogers 36C Vintage D- White Rogers 36C Very early "A" Vintage units had Valve White Rogers # 36C If the unit has one of these, replace it with Gas Valves- Propane Units- 400,000 btu (P40) Bub# Part Description 37 1 Vintage A- White Rogers 36C Vintage B- White Rogers 36C Vintage C- White Rogers 36C Vintage D- White Rogers 36C Very early "A" Vintage units had Valve White Rogers # 36C If the unit has one of these, replace it with Hydronic Heat N/S 1- Row Steam Coil N/S 2- Row Hot Water Coil Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 11

12 Electric Heat Section 27/40 KW Electric Heat- 208/230 Volt N/S Element- 40 KW N/S Element- 20 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A, 250V- FRN N/S Contactor- 3 Pole, 40A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM /40 KW Electric Heat- 460 Volt Bub# Part Description N/S Element- 40 KW N/S Element- 20 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 30A, 250V N/S Fuse- 30A- Limitron N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A- Limitron N/S Fuse Block- 3 Pole, 60A N/S Fuse- 60A- FRS N/S Contactor- 3 Pole, 40A, 240V N/S Contactor- 3 Pole, 25A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM /60 KW Electric Heat- 208/230 Volt Bub# Part Description N/S Element- 40 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A, 250V- FRN N/S Contactor- 3 Pole, 40A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM /60 KW Electric Heat- 460 Volt N/S Element- 40 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A- Limitron N/S Fuse Block- 3 Pole, 60A N/S Fuse- 60A- FRS N/S Contactor- 3 Pole, 40A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 12

13 Electric Heat Section 80 KW Electric Heat- 208/230 Volt Bub# Part Description N/S Element- 40 KW N/S Element- 20 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A, 250V- FRN N/S Contactor- 3 Pole, 40A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM KW Electric Heat- 460 Volt N/S Element- 40 KW N/S Element- 20 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A- Limitron N/S Fuse Block- 3 Pole, 60A N/S Fuse- 60A- FRS N/S Contactor- 3 Pole, 40A, 240V N/S Contactor- 3 Pole, 25A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM KW Electric Heat- 208/230 Volt N/S Element- 40 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 60A, 250V N/S Fuse- 60A, 250V- FRN N/S Contactor- 3 Pole, 40A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM KW Electric Heat- 460 Volt Bub# Part Description N/S Element- 40 KW N/S Limit Switch (ELE Plate)- 71F14-L N/S Limit Switch- (Above Plate) TOD 60T01B N/S Fuse Block- 3 Pole, 30A, 250V N/S Fuse- 60A- Limitron N/S Fuse Block- 3 Pole, 60A N/S Fuse- 60A- Fuse- 60A- FRS N/S Contactor- 3 Pole, 25A, 240V N/S Relay- 2nd Stage Heat (until s.n. P49)- RBM Relay- 2nd Stage Heat (after s.n. P49)- RBM N/S Relay- 1st Stage Heat RBM Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 13

14 Economizer Components (Options G & X) Mercury Switch for Power Exhaust See Power Exhaust Blower page 70 70A See Blower Components See Blower Section Manuf./Number 70 Damper Motor- Standard Honeywell W889E Damper Motor- Spring Return 1 Honeywell W899G Damper Motor- Spring Return 1 White Rogers A Crank Arm for Honeywell Motor A Crank Arm for White Rogers Motor Gravity Damper Filter- Permanent 20" X 20" X 2" Filter- Cleanable 20" X 20" X 2" Channel- Filter Retaining Angle- Filter N/S Filter Cap N/S Enthalpy Control Honeywell H205A N/S RD Damper Relay (pre s.n. P49) RBM RD Damper Relay (after s.n. P49) Essex N/S Economizer Rain Hood N/S Screws- Economizer Rain Hood When replacing a Honeywell Motor with a White Rogers Motor, the crank arm must also be replaced. The Spring Motor is used on units with option "X" (see Nomenclature page). Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 14

15 Power Exhaust Blower (Option 6) Dampers, Less Fan Section Linkage Arm Economizer Damper 83 Motor Leads Final Assembly View Behind Dampers 79 Front Partition Gravity Damper LH Side Panel Cover RH Side Panel Motor Bracket Motor- 1/3 HP 208/230V Motor- 1/3 HP 460V Fan Propeller Fan Grille Panel- Fan Mount Mercury Switch N/S Bracket- Mercury Switch RX Relay- Exhaust Motor (460V units only) N/S Capacitor- 5MFD 370V Motor was originally 1/2 HP, 1/3 is direct replacement. Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 15

16 VAV (Option 9) Tracking Damper (Option T) Discharge Damper for VAV Units (Damper installed in supply air duct) Tracking Damper Option (Damper installed in return air duct) 100 Discharge Damper- VAV Differential Pressure Switch Damper Motor Crank Arm Tracking Damper (Option T) Crank Arm Damper Motor Transformer- Damper Motor Cleveland Pressure Switch Pressure Switch Sensor- Indoor Static Pressure Tip Sensor- Outdoor Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 16

17 Power Return Blower (Option 7) Complete Assembly Blower Cone Blower Wheel Bridge Support Bearing Support Bearing- Pillow Block Shaft Blower Pulley- AK59 x 1-3/ N/S Blower Motor- 2 HP N/S Motor Mount Assy N/S Motor Pulley- 2VP x ¾ N/S Belt- A N/S Contactor- Blower Motor Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 17

18 Controls Compressor Contactor, Blower Motor Contactor, Terminal Blocks, Fan Motor Capacitors, Transformer, Guard-A-Matic, Relay, Unit Fuses Diagram A 27 27A * *Quantity Varies Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 18

19 Controls Compressor Contactor, Blower Motor Contactor, Terminal Blocks, Fan Motor Capacitors, Transformer, Guard-A-Matic, Relay, Unit Fuses Components Qty. Unit Voltage 208/ Transformer, V- Gas Heat Units- 500VA 1 n/a Transformer, V- All Units Contactor- Compressor 40A 3 pole Contactor- Compressor 25A 3 pole 2 n/a Contactor- Blower Motor (pre serial no. R06) Relay- Blower Motor (post sn. R06) Essex Capacitor- Outer Condenser Fans 10MFD/370V A Capacitor- Middle Cond. Fan 10MFD/440V (pre s.n. K37) Capacitor- Middle Cond. Fan 11.5 MFD/440V (post s.n. K37) Guard-A-Matic Timer 5 minutes Relay- Condenser Fan Essex Relay- 24 V SPDT- Cooling Only Units Pre Serial Number P49- RBM Post Serial Number P49- Essex Relay- 24 V SPDT- Gas Heat Units Pre Serial Number P49- RBM Post Serial Number P49- Essex Fuse Block- Blower Motor Fuse- Blower Motor Fuse Block- Pre Serial Number L Fuse Block- Post Serial Number L Fuses- Gas Heat Units- Pre Serial Number L Elect. or Hydronic Heat, Cooling Only Units- Pre L Gas Heat Units- Post Serial Number L Elect. or Hydronic Heat, Cooling Only Units- Post L Fuse Holder- 24V Control Circuit Fuses- 24V Control Circuit Terminal Block Terminal Strip- 10 Pole A Terminal Strip- 5 Pole Ground Lug N/S Discharge Air Stat- Honeywell W7100C N/S Sensor for Discharge Air Stat- Honeywell C7100A N/S Failure Relay Package (Option E) Complete Package for Field Install Terminal Strip- 6 Pole Relay- 24V SPDT RBM (pre s.n. P49) Relay- 24V SPDT Essex (post s.n. P49) Relay- 240V DPDT RBM Relay- 240V SPDT RBM Relay (post serial number R06) Essex Rooftop Unit; ER,R 160 Vintages A, B, C, D Rev. B 07/07 RPL / Page 19