Honeywell T7022A User Manual

T7022A
3
Remote Temperature Sensor
INSTALLATION INSTRUCTIONS

APPLICATION

The T7022 Remote Temperature Sensor is a non­adjustable thermistor sensor. Its primary use is with the T7300 Programmable Commercial Thermostat (only in return air) to control heating or cooling equipment.
provided the proper Q7100 subbase√one capable of handling more than one stage of heat√is used.

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for your application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Erratic System Operation Hazard. Failure to follow proper wiring practices can introduce disruptive electrical interference (noise).
Keep wiring at least one foot away from large
inductive loads such as motors line starters, lighting ballasts, and large power distribution panels.
Shielded cable is required in installations where
these guidelines cannot be met.
Ground shield only to grounded controller case.
CAUTION
Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry.
Disconnect power supply before installation.
IMPORTANT
All wiring must agree with applicable codes, ordinances and regulations.

Wiring (Fig. 1)

Wiring for the T7022 Remote Temperature Sensor can be run with class 2 wire in accordance with the National Electrical Codes. Conduit and/or shielding are not necessary for satisfactory operation, but conduit may be required by local codes or practices.
Q7300
T T
T7022
M1784
Fig. 1. Typical wiring diagram.

Location

The T7022 Thermostat must be mounted in the return-air flow in ducts (see Fig. 2 and 3) or light troffers (see Fig. 4 and 5). All mounting locations must be where the sensor is not affected by heat from the lights or other sources.

Mounting

The T7022 can be mounted in a duct with the furnished bracket, or in a light troffer as shown in Fig. 4 and 5 with two rubber grommets (not supplied) if proper spacing is available. Mounting can be directly in the return-air passage or in an air-sampling box. The rubber grommets can be used to wedge the sensor in slot openings of approximately 3/8 in. to 1/2 in. wide.
When using the mounting bracket, the maximum duct insertion length for the T7022 is approximately 2-3/4 in.
NOTE: A piece of 3/8 in. diameter conduit can be
used to extend the sensor further inside a duct (see Fig. 3). The use of such an extension can increase the maximum insertion length to approximately 9-1/2 in.
® U.S. Registered Trademark Copyright © 2001 Honeywell • All Rights Reserved
60- 0247- 2
T7022A REMOTE TEMPERATURE SENSOR
D H ( H T
T
1
0
Duct Mounting
RILL 5/16 INCH OLE FOR SENSOR
DRILL 3/8 INCH
OLE IF EXTENSION UBE IS USED).
RETURN AIR DUC
BOX MOUNTING SHEET METAL SCREWS
OPTIONAL EXTENSION TUBE
MOUNTING BRACKET
BRACKET
SETSCREW
Fig. 2. Duct mounting with mounting bracket.
M17818
OUTLET BOX
Fig. 3. Duct or light troffer mounting
where wiring must be run in conduit.
M17819
Light Troffer Mounting
NOTE: Fig. 4 and 5 illustrate T7022 mounting for individual zone control. This type of application requires the use of
an M7034 Electronic Modutrol® Motor. In applications with an M7034, an S963 can be used to provide remote setpoint adjustment, if desired.
DUCT
AIR CHAMBER
T7022
M1782
Fig. 4. Cross section of light troffer showing a typical
mounting location of the side of the light troffer.
T7022
Fig. 5. Cross section of light troffer showing a typical
mounting location at the end of the light troffer.
SHIELD
TO
DUCT OR
PLENUM
M1782

CHECKOUT

Move set point above and below room temperature to make sure controlled equipment operates properly. See other system component instructions for additional checkout procedures.
Home and Building Control Home and Building Control
Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9
60-0247√2 B.B. Rev. 2-01
Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
www.honeywell.com/building/components
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