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Honeywell C7189A Installation Instructions
Honeywell C7189A Installation Instructions

Honeywell C7189A Installation Instructions

Wall mount temperature sensor

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APPLICATION
The C7189 Wall Mount Temperature Sensor provides the
input required by the PC8900 Perfect Climate® Comfort
Center with the W8900 Remote Module to sense tempera-
ture in indoor air spaces.

SPECIFICATIONS

Operating Ambient Temperature Range:
40 to 95 F (4.4 C to 35 C)
Humidity Setting Range:
None
Operating Relative Humidity:
5% to 95% noncondensing
Finish:
White
Dimensions in Inches (millimeters):
2 3/4 (70) width x 4 5/8 (117) height x 1 1/16 (27) depth
Accessories:
202689A Mounting Plate Assembly used to cover marks
left on the wall by the old thermostat
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.
®U.S. Registered Trademark
Copyright © 1995 Honeywell Inc. •
Wall Mount Temperature Sensor
• All Rights Reserved
INSTALLATION INSTRUCTIONS
3 Installer must be a trained, experienced service
technician.
4 After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Disconnect power supply before connecting wiring
to prevent electrical shock or equipment damage.
Location and Mounting
Locate the C7189 Wall Mount Temperature Sensor where
the setting will not be subjected to tampering.
1 Choose a location for the sensor on an inside wall
about 5 ft (1.5 m) above the floor. A horizontally
mounted standard 2 x 4 in. (51 x 102 mm) junction
box can also be used at the selected location for the
C7189.
2 Be sure that the wire distance between the C7189
and the W8900 does not exceed 200 feet.
3 Make sure that there is good air circulation at
average temperature at the chosen location. Avoid
the following locations because they can introduce
errors in sensor measurements. See Fig. 1:
Hot areas caused by:
• Concealed pipes or ducts.
• Drafts from fireplaces or other heat sources.
• Convection or radiant heat from the sun or
electrical equipment.
Cold areas caused by:
• Concealed pipes or ducts.
• Drafts from windows and doors.
• Unheated areas on the other side of the wall
location.
Dead air areas:
• Behind doors, furniture and curtains.
• In corners and alcoves.
4 Mark the area on the wall where the C7189 Sensor
or junction box will be mounted.
X-XX UL
C7189A
69-0895-1

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Summary of Contents for Honeywell C7189A

  • Page 1: Specifications

    ®U.S. Registered Trademark Copyright © 1995 Honeywell Inc. • Wall Mount Temperature Sensor 3 Installer must be a trained, experienced service 4 After installation is complete, check out product...
  • Page 2 Contact your local waste management authority for instructions regarding recycling and the proper disposal of any control containing mercury in a sealed tube. If you have questions, call Honeywell Inc. at 1-800-468-1502, Monday through Friday, 7:00am to 5:30pm. Wiring CAUTION...
  • Page 3 The C7189 Wall Mount Temperature Sensor converts room temperature to a resistance that the controller can interpret. The C7189 has a negative temperature coeffi- cient (NTC), which means that the resistance decreases C7189A WALL MOUNT TEMPERATURE SENSOR W8900 W8900 C7189 C7189 as the temperature increases.
  • Page 4 C7189A WALL MOUNT TEMPERATURE SENSOR CHECKOUT Allow the C7189 Wall Mount Temperature Sensor to soak in the air moving through the room for a minimum of five minutes before taking a resistance measurement. With an accurate thermometer ( 1 F [0.5 C]), measure the temperature at the sensor location, allowing time for the thermometer to stabilize before reading.