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Thank you for purchasing a Robertshaw
This manual will describe how to install and test the Robertshaw RS9220 thermostat.
Thermostat System Types
Gas, Oil, or Electric Heat with Air Conditioning
Heat Pumps (without auxiliary or emergency heat)
Multi-Stage Systems
Heat-Only, including for Floor and Wall-Furnace
Cool-Only
750 Millivolt Heating Systems
Power Options
Battery Power
Hardwire (Common Wire)
Table of Contents
INSTALLATION MANUAL
thermostat.
®
IMPORTANT SAFETY INFORMATION
WARNING:
• Always turn off power at the main power
source by unscrewing fuse or switching
circuit breaker to the off position before
installing, removing, cleaning, or servicing
thermostat.
• Read all of the information in this manual
before installing or programming this
thermostat.
Page
• This is a 24V AC low voltage thermostat. Do
2
not install on voltages higher than 30V AC.
3
• All wiring must conform to local and national
4
building and electrical codes and ordinances.
5-12
• Do not short (jumper) across terminals on
13-17
the gas valve or at the system control to test
18
installation. This will damage the thermostat
19-22
and void the warranty.
23
1
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