Honeywell RTH111 Quick Installation Manual page 3

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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/backup heat
This thermostat cannot be used on heat pumps with
auxiliary/backup heat or on multistage systems.
Non-programmable Thermostat RTH111
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