Robertshaw 9520 User Manual page 13

ROBERT SHAW HEAT PUMP THERMOSTAT CONVERSION TO WEATHERTRON HEAT PUMPS
NOTE 1: E AND W2 TERMINALS
JUMPERED AT THERMOSTAT
NOTE 2: X2 TERMINAL CAPPED AT
WEATHERTRON PCB
NOTE 3: T TERMINAL CAPPED AT
WEATHERTRON PCB
24 VAC, RETURN
R
COMPRESSOR CONTACTOR
Y
REVERSING VALVE [COOLING MODE]
O
FAN CONTACTOR CIRCUIT
G
X2
2ND. STAGE HEATING CIRCUIT
W-U
24 VAC, COMMON
B
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 YORK
NOTE 1: E AND W2 TERMINALS
JUMPERED AT THERMOSTAT
24 VAC, RETURN
R
COMPRESSOR CONTACTOR
Y
REVERSING VALVE [COOLING MODE]
O
FAN CONTACTOR CIRCUIT
G
2ND. STAGE HEATING CIRCUIT
W
SYSTEM MONITOR LED
X
24 VAC, COMMON
B
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
R
-E1CS, -E1FB, -E1FH HEAT PUMP SYSTEMS
R
ROBERT SHAW HEAT PUMP THERMOSTAT
O B G
Y1
ROBERT SHAW HEAT PUMP THERMOSTAT
O
Y1 B G
13
W2
E L C
W2
E L C
Y2
Y2