Honeywell TF428/TF418 Series
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.
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