T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
31 63-2605—09
Fig. 25. Typical hookup of T7350M for system with two independent heat stages (one modulating),
two independent cool stages (one modulating), and 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.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
1
M32143
2
2
3
RCX
SUBBASE
W1 GY1
MH MC
AUXRH
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
M
OSOS AS MXAS
M
1
3
L1
(HOT)
HEATING
TRANSFORMER
COOLING
TRANSFORMER
L2
1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
MODULATING
HEAT
(4-20 mA)
–
+
MODULATING
COOL
(4-20 mA)
–
+
R
X
R
X
T5 T6 T7 T4 T3
HUMIDITY
SENSOR
HC HPHS
TR23-H REMOTE SENSOR
9
8
76
5
4
3
21
10
11
12
GND
SENSOR
SET PT
LED
BYPASS
4
WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL
BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1
COMMON AT THE SENSOR.
4
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