Old Thermostat Removal Remove Old Thermostat - Honeywell RTH7400 Installation Manual

Installation Guide
Remove your old thermostat About your new thermostat
1. Turn off power at heating/cooling system (or fuse/circuit-breaker panel).
2. Remove cover and thermostat, but leave wallplate with wires attached.
Leave wallplate in place
Old thermostat
69-204ES—0
Cover
Is there a sealed tube containing mercury?
If so, see inside front cover of this manual
for proper disposal instructions.
M28099
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