Thank you for purchasing a Robertshaw RS4000 thermostat. This user’s
manual will guide you through the setup of the RS4110 single stage, the
RS4220 two stage, and the RS4320 three stage* thermostats. The
thermostat should already be mounted and correctly wired. The default
settings will enable the thermostat to operate efficiently.
Features
• Pop-Up Wizard
• Automatic changeover
• Circulating Fan
• Worry-Free memory retention
• Easy change battery
• Large back lit display
• Filter change reminder
• Low battery indicator
• Fahrenheit and Celsius displays
• Dual power
• Adjustable 1
st
stage temperature differential: 0.5 °F to 3.0 °F (0.5 °C
to 1.5 °C)
• Accuracy within ±1 °F
• Universal staging on multi-stage units
• Automatic heating shutdown if temperature exceeds 99 °F (37 °C)
• Keypad security lockout
• User settable Hi and Lo temperature limits
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