Robertshaw 9520 User Manual page 14

ROBERT SHAW HEAT PUMP THERMOSTAT CONVERSION TO LENNOX
24 VAC, RETURN
R
COMPRESSOR CONTACTOR
Y
REVERSING VALVE [COOLING MODE]
O
FAN CONTACTOR CIRCUIT
G
EMERGENCY HEATING CIRCUIT
E
2ND. STAGE HEATING CIRCUIT
W1
SYSTEM MONITOR LED
L
24 VAC, COMMON
C
T
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
ROBERT SHAW HEAT PUMP THERMOSTAT CONVERSION TO LENNOX
HP19 AND HP20 HEAT PUMP SYSTEMS
24 VAC, RETURN
V-VR
COMPRESSOR CONTACTOR
M
REVERSING VALVE [COOLING MODE]
R
FAN CONTACTOR CIRCUIT
F
EMERGENCY HEATING CIRCUIT
E
2ND. STAGE HEATING CIRCUIT
Y
24 VAC, COMMON
X
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
CB19 HEAT PUMP SYSTEMS
ROBERT SHAW HEAT PUMP THERMOSTAT
R O
Y1
ROBERT SHAW HEAT PUMP THERMOSTAT
R Y1 O
14
W2
B G E
W2
B G E
Y2
L C
L C Y2