
Owner’s Manual
Read and save these
instructions.
RTHL2510/RTHL2410
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
•
Heat pump with auxiliary/backup heat