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Fig. 40 — 50BVT,U,V044-064 Constant Volume Wiring Schematic
LEGEND
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 it 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.
Standard Components Legend:
BM — Blower Motor
BR — Blower Relay
CBR — 24-v Circuit Breaker
CC — Compressor Contactor
CCH — Crankcase Heater (When Supplied)
CPM — Compressor Protection Module (Except MA480)
HPS — High Pressure Switch (380 psig)
LPS — Low Pressure Switch (20 psig)
MS — Motor Starter
RVR — Reversing Valve Relay (Heat Pumps Only)
RVS — Reversing Valve Solenoid (Heat Pumps Only)
Optional Components Legend:
BMR — Blower Motor Relay
CMFR — Compressor Malfunction Relay
CMR — Compressor Monitor Relay
EMS — Energy Management System Relay
Factory Wire
Field Wire
a50-7279ef