Instruction Manual

® U.S. Registered Trademark
Copyright © 2004 Honeywell International Inc. • All Rights Reserved
INSTALLATION INSTRUCTIONS
62-0214
C7100A,B,C,D
Averaging Temperature Sensors
APPLICATION
The C7100A,B,C,D Averaging Temperature Sensors
provide the input required by the W7080, W7100, Excel
500, and T775 Control Systems to sense temperature in
discharge, hot deck, cold deck or return air.
Fig. 1. Approximate dimensions of C7100 Averaging Temperature Sensor in in. (mm).
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous 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.
The sensor assembly (see Fig. 1) consists of an
aluminum sensor probe (element housed internally) with
attached flange that can bc mounted on a flat duct or
plenum surface, or in a 2 by 4 in. (51 by 102 mm)
junction box using four No. 8 screws. Connections to the
sensor are made through two recessed 1/4 in. (6 mm)
quick-connect terminals.
Location
The sensor should be located in the air duct or plenum
where it will sample an average air temperature. Avoid
locations where air stratification can cause sensor errors.
Mounting
Flat Duct or Plenum Surface Mounting (See Fig. 2)
1. Cut a 7/8 in. (22 mm) hole in the duct or plenum
surface at the desired location.
2. Insert sensor probe into the duct or plenum with
inlet holes facing the air stream.
3. If necessary, use the flange as a template to mark
and drill four holes for No. 8 mounting screws.
4. Fasten the sensor to the duct or plenum surface
with four No. 8 sheet metal screws (not provided).
Junction Box Mounting (See Fig. 3)
1. Cut a 718 in. (22 mm) hole in the duct or plenum
sulfate at the desired location.
2. Remove the center rear knockout from the junction
box and insert the sensing probe through the
knockout with the flange flat against the junction
box.
3. Using the flange as a template, mark and drill four
holes in the junction box and the duct or plenum
surface for No. 8 mounting screws.
4. Insert sensor probe through both the junction box
knockout and the 7/8 in. (22 mm) hole drilled in the
duct or plenum and fasten the junction box and
sensor to the duct or plenum surface.
3/4
(19)
13-1/4 (336)
1-3/16
(30)
1-3/16
(30)
1-13/16
(46)
1-13/16
(46)
M4461