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62-0135
7
Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES
Fig. 15. Typical hookup of T7300E,F/Q7300C in three-stage heat and two-stage cool heat pump system.
Fig. 16. Typical hookup of T7300E,F/Q7300D in three-stage heat and two-stage cool heat pump system.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
EM. MODE IS ON CONTINUOUSLY IN EMERGENCY HEAT MODE.
EM. HT. RELAY CYCLES IN EMERGENCY HEAT MODE.
1
2
3
3
2
1
M4940A
HEAT
RELAY 3
W2
L1
(HOT)
L2
YO G
SUBBASE
X
EM. HT.
RELAY
RB
COMPRESSOR
CONTACTOR 1
Y2
COMPRESSOR
CONTACTOR 2
TRANSFORMER
W3E
HEAT
RELAY 2
HEAT
CHANGEOVER
VALVE
X1 X2L
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
FAN
RELAY
COOL
CHANGEOVER
VALVE
EM.
MODE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
USE A1 AND A2 WHEN THE CONTACTS SHOULD BE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN THE
CONTACTS SHOULD BE NORMALLY OPEN IN OCCUPIED MODE.
CONNECT GND TO EARTH GROUND.
INSTALL FIELD JUMPER BETWEEN X4 AND X TO POWER LEDS.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
1
1
3
M4948A
2
3
4
5
2
5
4
HEAT
RELAY 3
W2
L1
(HOT)
L2
FAN
RELAY
Y1 G
SUBBASE
X R
C1 T
T7147 REMOTE COMFORT ADJUST MODULE
GND
W1
C2
COMPRESSOR
CONTACTOR 1
C4 C3C5
CA1
T
CA2
CA4 CA3CA5
T
T
Y2
COMPRESSOR
CONTACTOR 2
TRANSFORMER
W3E
HEAT
RELAY 2
EM. HT.
RELAY
A2 A3A1X3 X1X4
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
ECONOMIZER
AS AS
DISCHARGE
AIR
SENSOR
HEAT
RELAY 1