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T7350 Commercial Programmable Thermostat
27 63-2605—06
WIRING DIAGRAMS (FIG. 17-25)
Fig. 17. Typical hookup of T7350A in two-stage heat and one-stage cool conventional system
with two transformers.
Fig. 18. Typical hookup of T7350B in two-stage heat and two-stage cool conventional system
with two transformers.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
1
M19764A
2
2
RCX
SUBBASE
W1 GY1AUXRH
1
L1
(HOT)
L2
1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEATING
TRANSFORMER
COOLING
TRANSFORMER
FAN
RELAY
HEAT
RELAY 2
HEAT
RELAY 1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
1
M32140
2
2
3
RC X W1 G Y1
W2 Y2
AUX RH
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
OS OS AS AS
1
3
L1
(HOT)
L2
1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
COMPRESSOR
CONTACTOR 2
HEATING
TRANSFORMER
COOLING
TRANSFORMER
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
HEAT
RELAY 2
SUBBASE
T5 T6 T7 T4 T3
TR23 REMOTE SENSOR
9
8
76
5
4
3
21
10
11
12
GND
SENSOR
SET PT
LED
BYPASS