Honeywell T7350 User Manual page 28

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
TR23 REMOTE SENSOR
1 2
3
SUBBASE
L2
1
L1
(HOT)
1
2
3
Fig. 19. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system
TR23-H REMOTE SENSOR
1 2 3
SUBBASE
1 2
1
2
3
4
5
Fig. 20. Typical hookup of T7350D in three-stage heat and three-stage cool conventional system with one transformer.
63-2605—09
OUTDOOR
AIR
SENSOR
4 5 8 10 11 12
6 7 9
OS
T5 T6 T7 T4 T3
HEATING
TRANSFORMER
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.
with two transformers.
OUTDOOR
AIR
SENSOR
4 5 6 7 8 9 10 11 12
T5 T6 T7 T4 T3 OS
HS HC HP M
HUMIDITY
MOTION
SENSOR
SENSOR
L2
L1
(HOT)
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
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.
AUX HEAT
STAGE 1
DISCHARGE
AIR
SENSOR
OS AS AS
X RH RC AUX O/B
2
CHANGE
OVER
COMPRESSOR
CONTACTOR 1
3
ECONOMIZER
4
ECONOMIZER
DISCHARGE
HEAT
HEAT
AIR
RELAY 3
RELAY 2
SENSOR
OS AS AS AUX W3/Y4 Y3
M X RH RC AUX W1
3
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
28
COMPRESSOR
CONTACTOR 2
W2 Y2
Y1 G
FAN
RELAY
L2
1
L1
(HOT)
COOLING
TRANSFORMER
M32142
COMPRESSOR
CONTACTOR 2
W2 Y2
Y1 G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M29255