Contents [ hide
1 Turn Off Power to Heating/Cooling System
2 Remove Old Thermostat
3 Label Wires with Tags
4 Label the wires using the supplied wire labels as you disconnect them. Separate Wallplate from New
Thermostat
5 Connect Wires
6 Install Batteries
7 Set fan operation switch
8 Install Thermostat ontoWallplate
9 Turn Power Back On
10 Advanced Installation
11 About your new thermostat
12 Set the time and day
13 Program Schedule
14 To adjust program schedules (RTHL2310)
15 To adjust program schedules (RTHL221)
16 Program schedule override (temporary)
17 Program schedule override (permanent)
18 Built-in compressor protection
19 Battery replacement
20 Troubleshooting
21 1-year limited warranty
22 File Downloads
23 Related Manuals
Turn Off Power to Heating/Cooling System
Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
If you have an older thermostat with a sealed mercury tube, turn to page 2 for proper disposal instructions.