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Source 1 S1-THEH21NS - Installation Preparation Steps; Tools Needed for Installation; Initial Installation Checks

Source 1 S1-THEH21NS
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Page 9
These tools will be required:
Flat Blade
Screwdriver
Wire cutter
& Stripper
Carefully unpack the thermostat.
Save the screws and instructions.
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.
Preparation
OWNER'S MANUAL
S1-THEH21NS
Make sure your Heat Pump is working
properly before beginning installation
of the thermostat.
Turn off the power to the Heat Pump
system at the main fuse panel.

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