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Communicating Controllers

The T6820 series controllers are a microprocessorbased controller.

The controllers can be setting by the WS-069 series or master controller or operating by the BAS system.

The controllers are designed to on/off control the fans, valves or electric heaters in fan-coil and air conditioner applications.

  • 2-pipe fan coil units

  • 4-pipe fan coil units

  • BAS system integration

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  • Built-in RS-485 communicating interface

  • Provided Modbus protocol for system integration

  • Provided system or local control function

  • Provided ON/OFF control output signal

  • Changeable heating, cooling and ventilating mode control

  • Changeable high, medium, low and automatic fan speed control

  • Adjustable high and low setpoint limits

  • Controller address is set by DIP switch combination in each controller

  • Provided auxiliary control output for interlocking control application

  • Provided low temperature protecting function

  • Provided power failures re-start function

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

  • Provided 7 LEDs for power on, high speed, medium speed, low speed, valve open, valve close, auxiliary control output indication

  • Steel housing makes this controller ideal for locating on the fan-coil units or air-conditioner