Honeywell RTH221 Series User Manual

69-2606ES—01 8
Move the switch to the proper setting:
Gas or Oil: For gas or oil heating systems, leave the fan
operation switch in this factory-set position (for systems
that control the fan in a call for heat).
Electric or Heat Pump: Change the switch to this setting
for heat pump or electric heat systems. (This setting is for
systems that allow the thermostat to control the fan in a
call for heat, if a fan wire is connected to the G terminal.)
8
Set fan operation switch
RTHXXXX
M32716
GAS OR OIL
ELECTRIC OR HEAT PUMP
GAS OR OIL
ELECTRIC OR HEAT PUMP

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