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WIRING DIAGRAMS
TR23-H REMOTE SENSOR
1
2
3
4
SUBBASE
L2
1
L1
(HOT)
HEATING
TRANSFORMER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
4
WHEN USING THE TR23-H FOR HUMIDITY SENSING, THERE IS NO NEED TO WIRE THE HC TERMINAL
BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1
COMMON AT THE SENSOR.
Fig. 7. Typical hookup of T7351F2010 in two-stage heat and two-stage cool heat pump system with two
TR23-H REMOTE SENSOR
1
2
3
4
SUBBASE
L2
1
2
L1
(HOT)
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
3
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
4
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
5
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.
Fig. 8. Typical hookup of T7351F2010 in two-stage heat and four-stage cool conventional system.
OUTDOOR
AIR
SENSOR
5
6
7
8
9
10 11 12
T5
T6
T7
T4
T3
OS
4
HS
HC
HP
M
HUMIDITY
MOTION
SENSOR
SENSOR
OUTDOOR
AIR
SENSOR
5
6
7
8
9
10 11 12
T5
T6
T7
T4
T3
OS
HS
HC
HP
M
5
HUMIDITY
MOTION
SENSOR
SENSOR
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT
DISCHARGE
AUX HEAT
STAGE 1
AIR SENSOR
OS
AS
AS
W2
X
RH
RC
AUX
O/B
M
2
CHANGE-
OVER
3
ECONOMIZER
transformers.
DISCHARGE
COMPRESSOR
AIR
CONTACTOR 4
SENSOR
OS
AS
AS
W3/Y4 Y3
M
X
RH
RC
AUX
W1
3
HEAT
RELAY 1
4
ECONOMIZER
11
COMPRESSOR
CONTACTOR 2
W1
Y2
Y1
G
FAN
RELAY
COMPRESSOR
CONTACTOR 1
COOLING
TRANSFORMER
HEAT
RELAY 2
COMPRESSOR
CONTACTOR 2
W2
Y2
Y1
G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
COMPRESSOR
CONTACTOR 1
M29254
L2
1
L1
(HOT)
M29323
62-0258—05
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