PC8900A CONTROL PANEL
2
69-0893—1
INSTALLATION

When Installing this Product…

1. Read these instructions carefully. Failure to follow
instructions can damage the product or cause a
hazardous condition.
2. Check the ratings on the product and the compatibil-
ity in Table 1 to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out product operation.
CAUTION
Disconnect power supply before wiring to prevent
electrical shock or equipment damage.

Location and Mounting

NOTE: The following location guidelines apply only if a
remote sensor is not part of the installation. If a
remote sensor is installed, the PC8900 can be
installed in any convenient location, with these
guidelines applying to the sensor location.
Locate the PC8900 where it will not be subjected to
tampering.
1. Choose a location on an inside wall about 5 ft (1.5m)
above the floor. A horizontally mounted standard
2 in. x 4 in. (51 mm x 102 mm) outlet box can also
be used at the selected location for the PC8900.
2. Be sure that the wire distance between the PC8900
and the W8900 does not exceed 200 feet.
3. Be sure that there is good air circulation at average
temperature at the chosen location. Avoid the
following locations because they can introduce
errors in temperature measurements.
•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 PC8900 or
outlet box will be mounted.
5. Run cable to a hole at the selected wall location.
Pull approximately 3 inches of wire through the
opening. Color-coded 18-gauge thermostat wire is
recommended.
6. Position wiring plate on wall.
7. Level the wiring plate, for appearance only, using
the posts on top of the wiring plate. Device will
function properly even when not level.
8. Mark three mounting holes using a pencil.
9. Remove wiring plate from wall and drill 3/16 inch
holes in wall, if drywall, as marked. For firmer
material such as plaster or wood, drill 7/32 inch
holes. Gently tap anchors provided into drilled holes
until flush with the wall. See Fig. 2.
10. Position wiring plate over holes in wall or outlet box,
pulling wires through wiring opening. Loosely insert
two mounting screws into holes.
11. Tighten mounting screws.
Fig. 1. Typical Location of PC8900.
5 FEET
(1.5 METERS)
YES
NO
NO
NO
M6394