Honeywell RTH221B1021 Quick Installation Guide

69-2448ES—03 4
Quick Installation Guide
Mount New Wallplate
Loosen the locking screw at the bottom of the 1.
thermostat. Note that the screw is captive and cannot
be removed from the wallplate.
Separate the thermostat from the wallplate as per 2.
Figure 1.
Position the wallplate against the wall and mark hole 3.
positions with a pencil.
NOTE: Levelling is for esthetics only and will not affect
the performance of the thermostat.
Drill holes at the marked positions and insert supplied 4.
wall anchors.
Pass the wires through the large opening located at 5.
the bottom center of the wallplate as per Figure 2.
Secure the wallplate to the wall with supplied mounting 6.
screws as per Figure 3.
Connect the wires to the terminals.7.
4
Figure 1 Figure 2 Figure 3
M32154

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