Honeywell T7351 User Manual

Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN  55422

Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario  M1V 4Z9
customer.honeywell.com

® U.S. Registered Trademark
© 2010 Honeywell International Inc.
63-2666—02    M.S.  Rev. 09-10 
Printed in U.S.A.

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