Carrier 50BV020-064 specifications

56

		LEGEND
Standard Components Legend:			Optional Components Legend:
#1	— First Stage		CMFR	— Compressor Malfunction Relay
#2	— Second Stage		CMR	— Compressor Monitor Relay
BM	— Blower Motor		EMS	— Energy Management System Relay
BR	— Blower Relay		FSR	— Freeze/Condensate Sensor Relay
CBR	— 24-vac Circuit Breaker		Freeze/Condensate Sensor Module (includes FSR)
CC	— Compressor Contactor		Condensate Sensor
CCH	— Crankcase Heater (When Supplied)		Freeze Sensor
CPM	— Compressor Protection Module
HPS	— High Pressure Switch
LPS	— Low Pressure Switch
MS	— Motor Starter
RVR	— Reversing Valve Relay (Heat Pumps Only)
RVS	— Reversing Valve Solenoid (Heat Pumps Only)
		Factory Wire
		Field Wire

NOTES:

1.See unit nameplate for electrical rating.

2.All field wiring must be in accordance with NEC-NFPA #70.

3.208/230-v units are factory wired for 230-v operation. For 208-v operation, remove ORG lead and replace with RED lead. Cap all unused leads.

4.Check phase rotation on all scroll compressor units. Reverse rotation will damage the compressor and void unit warranty.

5.For alternative EMS coil voltages, consult factory.

6.UPM board includes built in 30 to 60-second random start, 5-minute delay on break, 90-second low pres- sure bypass, and 5-second second stage delay.

7.Setting the test mode jumper to yes reduces all time delays to 5 seconds.

Fig. 39 — 50BVT,U,V034 Constant Volume Wiring Schematic