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62-0135
4
Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES
Typical Wiring Hookups
Fig. 9. Typical hookup of T7300D,F/Q7300A in one-stage heat and
one-stage cool conventional system with two transformers.
Fig. 10. Typical hookup of T7300D,F/Q7300A in two-stage heat and
one-stage cool conventional system with two transformers.
W2
L1
(HOT)
L2
M10230
FAN
RELAY
Y1 G X
SUBBASE
RC
HEAT
RELAY 1
RHW1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEATING
TRANSFORMER
COOLING
TRANSFORMER
HEAT
RELAY 2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED
ON A SYSTEM WITH ONE TRANSFORMER.
1
1
1
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.
CONNECT GND TO EARTH GROUND.
INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.
1
1
4
3
4
1
3
M4939A
2
2
L1
(HOT)
L2
FAN
RELAY
Y1 G X
SUBBASE
RC
HEAT
RELAY
RH
C1 T
T7147 REMOTE COMFORT ADJUST MODULE
GND
W1
C2
L1
(HOT)
L2
COMPRESSOR
CONTACTOR
C4 C3C5
CA1
T
CA2
CA4 CA3CA5
T
T
HEATING
TRANSFORMER
COOLING
TRANSFORMER
X3 X1X4
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1