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Modulating Fan Speed Control Digital Fan-Coil Controllers

The T4700 series thermostat is a stand-alone microprocessor based thermostat with LCD display.

The T4700 series provided modulating fan with on/off (2-position) heating/cooling valve control for 2-pipe or 4-pipe fan-coil unit.

The controller provided proportional plus integral (PI) control with modulating control output.

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  • 產品說明

  • Digital display of room ambient temperature and user selected temperature setting on demand

  • Adjustable Heating, Cooling, Ventilating and Timer off mode control

  • Proportional plus integral (PI) advanced control and 0(2) to 10 Vdc analog output for modulating fan speed control

  • Provided backlight function

  • Unoccupied Mode function for energy savings - external Energy Savings Input (ESI) Signal from hotel card key, occupancy sensors or lighting interlock signal

  • Adjustable unoccupied setpoint for heating and cooling mode control when use Unoccupied Mode

  • Adjustable high and low setpoint limits

  • Provided Enable/Disable key locking function

  • Provided Timer Off (0 to 24 hours) control output function

  • Remote Sensor (RS) function

  • Output limited for over load protection

  • Non-volatile memory (EEPROM) retains user settings during power loss

  • Self-diagnostic feature

  • °C or °F display unit

  • 120 seconds fan off delay time for Heating control

  • Adjustable deadband (T4704CL series only)