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OWNER'S MANUAL
Preparation
Proper installation of the thermostat will be
accomplished by following these step
by step instructions. If you are unsure
about any of these steps, call a qualified
technician for assistance.
These tools will be required:
Flat Blade
Screwdriver
Make sure your Heat Pump is working
properly before beginning installation
of the thermostat.
Carefully unpack the thermostat.
Save the screws and instructions.
Turn off the power to the Heat Pump
system at the main fuse panel.
S1-THEH21NS
Wire cutter
& Stripper
Page 9
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