Honeywell RTH221B1021 Quick Installation Guide

Advanced Installation
System setup ......................................................................11
Temperature display ...........................................................12
Time display format ...........................................................13
Heating cycles per hour .....................................................14
Compressor protection ......................................................15
Customer assistance .........................................................16
Limited warranty .................................................................17

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