Overview

RS321N Slimline® Premier Digital Non-Programmable Thermostat
(Replaces 300-208 and DSL450)
*  New Features in BOLD

  • Universal Control with 2-Heat / 1-Cool Control for Gas / Electric / Heat Pump / Oil equipment
  • Auto Heat/Cool Changeover, or Heating Only or Cooling Only Configuration
  • Intuitive Setup Menu for Easy Configuration of Options
  • Fan Selector for Automatic, Continuous or Recirculation Fan Operation
  • Adjustable Deadband between Heat and Cool Setpoint in Auto Changeover, from 2°F (1°C) and 8°F (4°)
  • Adjustable Fan Purge Timer to Use All Conditioned Air at the End of a Heating or Cooling Call
  • High and Low Setpoint Limits for Heating and Cooling
  • Room Sensor and Remote Sensor Calibration Offset
  • Commercial Lockout Mode with adjustable 0 to 24 Hour Override in 10min Increments
  • Restricted Temperature Adjustment in Commercial Lockout Mode; +/- 3°F (1°C) or +/-5°F (2°C) 
  • Resume Button for Cancelling Commercial Override
  • 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
  • Two Digital Inputs with LEDs:  LED1 (Green - Filter) and LED2 (Yellow - Fault) with or without LCD Icon Indications
  • LED3 (Red - Emergency Heat; HP Operation Only)
  • Setback Input for Use 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, Walk-In Refrigerator or Freezer, etc.)
  • Random Restart on Power Up Staggers Restart of HVAC System After a Power Outage to Minimize Peak In-Rush Current for any Installation

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