Honeywell 63-2666-03 User Manual
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark
© 2013 Honeywell International Inc.
63-2666—03 M.S. Rev. 12-13
Printed in United States
© 2013 Honeywell International Inc.
63-2666—03 M.S. Rev. 12-13
Printed in United States
Fig. 15. Typical Hookup of T7351F2010 in Two-Stage Heat and Four-Stage Cool Conventional System.
Fig. 16. Typical hookup of T7351F2010 in two-stage heat and two-stage cool heat pump system with two transformers.
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.
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.
1
M29254
2
3
2
3
4
RC
X
SUBBASE
W1
G
Y1
W3/Y4 Y3
W2
Y2
AUX
RH
T5
T6
T7
T4
T3
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
HUMIDITY
SENSOR
M
OS
OS
AS
AS
M
HC
HP
HS
1
4
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
COMPRESSOR
CONTACTOR 2
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
HEAT
RELAY 2
COMPRESSOR
CONTACTOR 3
COMPRESSOR
CONTACTOR 4
TR23-H REMOTE SENSOR
9
8
7
6
5
4
3
2
1
10 11 12
GND
SENSOR
SET
PT
LED
BYP
ASS
5
5
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.
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.
1
M29323
2
2
3
4
4
RC
X
SUBBASE
O/B
G
Y1
W1
W2
Y2
AUX
RH
T5 T6 T7 T4 T3
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
CHANGE-
OVER
FAN
RELAY
ECONOMIZER
AUX HEAT
STAGE 1
MOTION
SENSOR
HUMIDITY
SENSOR
M
M
HC
HP
HS
TR23-H REMOTE SENSOR
9
8
7
6
5
4
3
2
1
10 11 12
GND
SENSOR
SET
PT
LED
BYP
ASS