Description
Description
The TF428 series digital thermostat is designed for 3-speed fan and valve control in a fan coil system, including: 2-pipe cooling only/heating only/manual changeover, 4-pipe cool/heat manual/automatic changeover, ventilation mode, manual or automatic 3-speed fan control and 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
- 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 when power loss
- Freeze protection function available
- Keypad lock options
- Heating and cooling setpoint limitation
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