Honeywell RTH221B1021/A- Manuals

Honeywell RTH221B1021/A– Installation Manual in PDF format online.

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Summary

Page 2 - Identify System Type; This thermostat cannot be used on heat pumps with

69-2448ES—03 ii Quick Installation Guide Identify System Type This thermostat is compatible with the following systems: Gas, oil or electric furnace • Central air conditioner • Hot water system with or without pump • Millivolt system • Central heating and cooling system • Heat pump without auxiliary...

Page 4 - Quick Installation Guide; Remove Old Thermostat; Remove old thermostat but leave wallplate with

69-2448ES—03 2 Quick Installation Guide Remove Old Thermostat 2 M28099 Old thermostat Cover Remove old thermostat but leave wallplate with wires attached. Do not remove wallplate yet MERCURY NOTICE Do not put your old thermostat in the trash if it contains mercury in a sealed tube. Contact your loca...

Page 5 - Identify Wires

3 69-2448ES—03 RTH2300/RTH221 If any wires are not attached to your old thermostat or are attached to a terminal marked C or C1 , they will not be connected to your new thermostat. Wrap the bare metal end of each of these wires with electrical tape, so it can- not touch and short other wires. Identi...

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