Honeywell TF428 Series Digital Thermostat Fan Coil Unit Control

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Honeywell TF428 Series Digital Thermostat Fan Coil Unit Control TF428WN/U

  • $115.00
  • $109.25

Model: TF428WN/U

Digital Thermostat | 2 pipe application | 3-speed fan | Modulating valve control | Unit package |  Color: white 


The TF428 series digital thermostat is designed for 3-speed fan and valve control in a fan coil system, including:

  • 2-pipe cool only/heat only/manual changeover
  • 4-pipe cool/heat manual /automatic changeover
  • Ventilation mode
  • Manual or automatic 3-speed fan control
  • Water valve control

Besides the basic controls, TF428 series featuring CPH (Cycle Per Hour) better maintains the room temperature to the setpoint and Random Start-up Function would help to maintain power grid stability. In addition, Honeywell Memorized Time Off Function can automatically turn off the thermostat to save energy. 


  • Memorized time off
  • Cycle Per Hour (CPH)
  • Random startup
  • Remote temperature sensor optional
  • Energy saving mode optional
  • LCD display with simple user interface
  • Room temperature or setpoint temperature display selectable
  • Manual or automatic fan speed selectable
  • Temperature units in either °C or °F
  • User setting can be stored with power loss
  • Freeze protection available
  • Four keypad lock options
  • Heating and cooling setpoint limitation

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