Install Instructions

Thermostat System Types
Thank you for purchasing a Robertshaw
®
thermostat. This manual will describe how to
install and test the Robertshaw RS9210 thermostat.
Gas, Oil, or Electric Heat with Air Conditioning
Heat Pumps (with or without auxiliary or emergency heat)
Multi-Stage Systems
Heat-Only, including for Floor and Wall-Furnace
Cool-Only
750 Millivolt Heating Systems
Table of Contents Page
Installation Location 2
Thermostat Quick Reference 3
Wallplate Installation 4
Wiring 5-12
Installer Setup Menu 13-17
Mounting & Battery Installation 18
Programming 19-22
Specications 23
Power Options
Battery Power
Hardwire (Common Wire)
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.
• This is a 24V AC low voltage thermostat.
Do not install on voltages higher than
30V AC.
• All wiring must conform to local and
national building and electrical codes
and ordinances.
• Do not short (jumper) across terminals
on the gas valve or at the system control
to test installation. This will damage the
thermostat and void the warranty.
INSTALLATION MANUAL
1