Use and Care Guide

1
About your new thermostat
Thermostat features .............................. 2
Programming at a glance ..................... 3
Quick reference to controls .................. 4
Quick reference to status display ........ 5
Programming & Operation
Clock setting.......................................... 6
Fan setting ............................................. 7
System setting ....................................... 8
Using program schedules ..................... 9
Program schedule overrides .............. 12
Vacation hold ....................................... 14
Special features ................................... 15
Screen cleaning ................................... 16
Furnace filter reminder ........................ 17
Appendices
Battery replacement ............................ 18
In case of difficulty .............................. 19
Limited warranty .................................. 21
This thermostat is ready to go!
Your new thermostat is pre-
programmed and ready to go.
See page 3 to check settings.
Table of contents
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not oper-
ate cooling system when outdoor
temperature is below 50˚F (10˚C).
RTH8500