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STEP 1. PREPARE FOR INSTALLATION
! Check the contents of your thermostat package to be sure all items are included.
Package Contents
•
Thermostat
•
Wiring labels
! Locate the required tools to install your thermostat.
Tools Required
•
Screwdriver
•
Hammer
•
Level
STEP 2. REMOVE OLD THERMOSTAT
! Test your heating and cooling systems to make sure they work properly. If either system does not work, contact
your local heating/air-conditioning dealer. To avoid compressor damage, do not operate the cooling system when
outdoor temperature is below 50°F (10°C).
! Turn off power to the system at the furnace or the fuse/circuit breaker panel.
! Carefully unpack your new thermostat and wallplate. Save package of screws, instructions, and receipt.
! Remove the cover from the old thermostat. If the cover does not snap off when pulled firmly from the bottom, check
for a screw or screws used to lock on the cover.
! Loosen the screw or screws holding the thermostat to the wallplate and lift the thermostat away.
! Disconnect the wires from the old thermostat. As you disconnect each wire, attach the enclosed labels with the old
terminal designation. If there are only two wires, they do not need to be labeled. Wrap the wires around a pencil as
shown to keep them from falling back into the wall.
Special Installations
Read this section if you are replacing:
•
Clock thermostat with separate wires for the clock.
•
Thermostat with six or more wires connected to it.
•
Thermostat in a heating only system with three wires.
•
Wallplate
•
Screws and anchors
•
Drill
•
Needle-nose pliers
5
•
Owner's Guide
•
Drill bits: 3/16 in. for drywall;
7/32 in. for plaster
WIRES THROUGH
WALL OPENING
M5136
69-1532—2
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