Honeywell RTH4300B Benutzerhandbuch
![Honeywell](https://files.manualsbrain.com/attachments/04072ac208afe0f60402a9212acd23d57421a7fb/common/fit/150/50/3e168605118cbbd2e280a10aaeca155d86bc5b4c616b0334def9ca6d226c/brand_logo.png)
RTH4300B Programmable Thermostat
Remove your old 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.
2. Remove cover and thermostat, but leave wallplate with wires attached.
Is there a sealed tube containing mercury?
If so, see inside front cover of this manual
for proper disposal instructions.
Old thermostat
Cover
Leave wallplate in place