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Order By 3 PM CST For Same Day Fulfillment!
Order By 3 PM CST For Same Day Fulfillment!

RS321P 7-Day Programmable Thermostat 2H/1C



  • 7-Day Programmable, 5-2 Day Programmable or Manual Operation
  • Auto Heat/Cool Changeover, Heating Only or Cooling Only Control
  • Intuitive Setup Menu for Easy Configuration of Options
  • Fan Selector for Automatic, Continuous or Recirculation Fan Operation
  • Adjustable Fan Purge Timer to Use All Conditioned Air at the End of a Heating or Cooling Call
  • Adjustable Min/Max Heating and Cooling Setpoint Limits
  • Room Sensor and Remote Sensor Calibration Offset
  • Commercial Lockout Mode with adjustable 0 to 24 Hour Override in 10min Increments
  • Resume Button for Cancelling Commercial Override
  • +/- 3°F (1°C) or +/-5°F (2°C) Restricted Temperature Adjustment in Commercial Lockout Mode
  • 2 Occupied (Day-Cool & Day-Heat) and 2 Unoccupied (Night-Cool & Night-Heat) Setpoints
  • Adjustable Balance Points for Heat Pump Compressor and Aux Heat Lockout when Used with Outdoor Sensor
  • Selectable Fahrenheit or Celsius Display
  • Lockable Access Cover
  • HVAC equipment control using dry relays
  • Two Digital Inputs with LED's: LED1 (Green-Filter) and LED2 (Yellow-Fault) with or without LCD icon indications
  • LED3 (Red-Emergency Heat; HP Operation Only) 
  • Setback Input for Uses as Occupied/unoccupied Trigger with Optional Occupancy Sensors (Ceiling and Wall Mount) 
  • Advanced Remote Sensor Bus Sensors allow up to 6 Indoor, plus Outdoor, Aux1, Aux2, and Aux3 (think supply air, return air,...all on a 3 wire-bus)
  • Random Restart on power-up randomly staggers restart of the HVAC system after a power outage to minimize peak in-rush current for any installation 
  • Economizer Control on RS332PE and RS332PEH 
  • Humidity Control on RS332PEH 

Installation Instructions

Installation Instructions for RS321P

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1835 Wallace Ave.
St. Charles, Illinois 60174
Monday - Friday
Order by 2pm, ships same day, for free!
Pick-up between 9 am - 5 pm