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Remove Old Thermostat - Honeywell RTHL221 series Quick Installation Manual

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Table of Contents
2

Remove Old Thermostat

Remove old thermostat but leave wallplate with
wires attached.
Do not remove
wallplate yet
Old thermostat
69-2578EF—01
Is there a sealed tube containing
mercury? If so, see back cover for
proper disposal instructions.
Cover
2
M28099

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This manual is also suitable for:

Rthl 2310 series