Wiring Diagrams - Robertshaw 9520 User Manual

Wiring Diagrams

The following is just a sample of the most common types of HVAC
systems. Refer to your systems installation manual for wiring information.
ROBERT SHAW HEAT PUMP THERMOSTAT CONVERSION TO CARRIER
SPLIT SYSTEM CONDENSORS AND HEAT PUMP SYSTEMS
24 VAC, RETURN
R
COMPRESSOR CONTACTOR
Y
REVERSING VALVE [COOLING MODE]
O
FAN CONTACTOR CIRCUIT
G
EMERGENCY HEATING CIRCUIT
E
2ND. STAGE HEATING CIRCUIT
W2
SYSTEM MONITOR LED
L
24 VAC, COMMON
C
W3
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
ROBERT SHAW 09620 HEAT PUMP CONVERSION TO COLEMAN HEAT PUMPS
24 VAC, RETURN
R
COMPRESSOR CONTACTOR
Y
REVERSING VALVE [HEATING MODE]
B
FAN CONTACTOR CIRCUIT
G
EMERGENCY HEATING CIRCUIT
E
2ND. STAGE HEATING CIRCUIT
W2
SYSTEM MONITOR LED
L
24 VAC, COMMON
X
O
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
R
3000 SERIES HEAT PUMP SYSTEMS
R
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
ROBERT SHAW HEAT PUMP THERMOSTAT
O B G
Y1
ROBERT SHAW 09620 HEAT PUMP THERMOSTAT
O
Y1 B
10
W2
E L
W2
G E L
C Y2
Y2
C