Honeywell RTH221 Series User Manual

Advanced Installation Guide
69-2606ES — 01 14
SETUPWIRINGASSISTANCETROUBLESHOOTING
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M32779
System setup
Change Function Change Setting
See pages 15–19 to change Function Settings.
Changing Settings
Function
Setting
1. Press the s or t button to change the setting.
2. Press the s and t buttons simultaneously for one
second to advance to the next function.
3. Press the Run button to exit and save settings.
NOTE: If you do not press any button for 60 seconds
while you are in the setup menu, the thermostat
automatically saves any changes made and exits the
menu.

Honeywell RTH221 Series Specifications

General

Stages	1 Heat/1 Cool
Voltage	24V
Temperature Range	40°F to 90°F (4°C to 32°C)
Backlight	No
Display	Digital
Power Source	Battery
Temperature Control	Manual
Compatibility	Gas, Oil, Electric
Type	Non-Programmable Thermostat
Program Periods	Not Applicable