Honeywell RTH1100 Quick Installation Manual page 2

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
• Gas fireplace
This thermostat works on 24-volt or 750-mV systems.
It will NOT work on heat pump systems, multistage
systems or 120/240-volt systems.
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Do you need assistance?
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Call 1-800-468-1502.
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