Owner’s Manual
RTH2300B1012
Read before installing
For help please visit
resideo.com
RTH2300/RTH221
Series
Programmable
Thermostat
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
Do you need assistance? We are here to help.
Call 1-800-468-1502 for wiring assistance before returning
the thermostat to the store.
This thermostat cannot be used on heat pumps with
backup heat or on multistage systems.
Input: 2 x AAA batteries (1.5V each)
