Honeywell RTH221B1021 Quick Installation Guide

9 69-2448ES—03
RTH2300/RTH221
Install 2 AAA batteries 1.
on the back of the
thermostat.
Install Batteries and
Thermostat
8
Align the two brackets 2.
on the top of the
thermostat with the
corresponding slots
on the top of the
wallplate.
Push the thermostat 3.
against the wallplate.
Tighten the screw 4.
at the bottom of the
thermostat.
Turn power back on 5.
at the heating/cooling
system.
M28098

Honeywell RTH221B1021 Specifications

General

Type	Non-programmable
Display	Digital
Power Source	Battery
Temperature Control Range	40°F to 90°F (4°C to 32°C)
Stages	1 Heat/1 Cool
Voltage	24V
Backlight	No
Compatibility	Single-stage heating and cooling systems