Bryant Non-Programmable thermostat Owner's Manual page 15

Operating the Thermostat
9. With the bottom of the thermostat attached to
the bottom of the wall bracket, bring the thermostat
back to the wall. Line up the latch at the top of
the thermostat with the corresponding lip on the
wall bracket.
10. Lightly push the thermostat toward the wall. When the latch and lip
are lined up properly, you will hear the thermostat snap into place.
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