Advanced Installation - Honeywell RTHL2510 Series Owner's Manual

11 If your system type is...
If your system type is:
q Single Stage Heat and Cool
q Heat Only or Cool Only
Congratulations, you're done!
If your system type is:
q Heat Pump* with Backup Heat
Continue with Advanced Installation to match your thermostat to your system
type.
*Heat Pump—an air conditioner that provides cooling in the summer, and also
runs in reverse in the winter to provide heating.
This thermostat works on 24 volt or 750 mV systems. It will NOT work on multi-
stage conventional systems.

Advanced Installation

Enter System Setup
To enter system setup, press and hold
both the and
s t
changes (approximately 5 seconds).
Changing Settings
1. Press the or
s
the setting.
2. Press the and
s
simultaneously for one second to
advance to the next function.
3. Press the RUN button to exit and save
settings.
buttons until the display
button to change
t
buttons
t
Heat Off Cool
9
Fan
Auto On
5
Function
Setting
M32713
5
M32779