Flush mount, 230VAC thermostat for Fan Coil B.M.S. Applications with Modbus protocol.

The FMHC220-FC-MDB03 is a highly versatile, stand-alone thermostat suitable for Building Management System applications with Modbus communication protocol.
With multiple, selectable modes of operation, the FMHC220-FC-MDB03 offers suitability to 2-Pipe, 4-Pipe, or no valve Fan Coil system, electrical heating element option. It can function as either Cool/Heat or Cool Only thermostat.
Using the DIP switch, the technician can select between applying an Auto-Change-Over sensor or utilizing a contact input for the Economy mode to save energy.

In addition, it offers the Auto-Fan feature to work at either Cool, Heat, or at both.
Additional features, such as Set Point Temperature Limits, Dead Zone, and Room Temperature Offset, are all implemented and changeable.
Overall, the FMHC220-FC-MDB03 offers numerous options. Nonetheless, the setting is simple and user-friendly.


• Flush mount, 230VAC thermostat
• 2 separate outputs for Cool & Heat
• DIP switch selectable options:
• Auto-Change-Over sensor or Contact input
• 2-pipe or 4-pipe system
• 1 or 3 fan speed control + Auto Speed
• With or without Auto-Change-Over mode
• Set point & room temp. display on LCD , or set point temp. display only

• Always Auto-fan or Auto-fan selectable
• Internal or external temperature sensor

• Modes: Cool/ Heat / Auto- Change-Over/ Fan Only
• Contact input changes to Economy mode or turns unit off (Optional)
• Cool Only thermostat – option
• Electrical heater - option
• Disable Fan operation – option (only in Cool, only in Heat, or in both)

• Set point limits – 10…30°C

• 3 Auto-Fan types:
 - Auto-fan in Cool & Heat
 - Auto-fan only in Cool
 - Auto-fan only in Heat

• Password for protected setting
• Pushbutton beeper – option
• Programmable MAC address – 1…99 addresses
• Hand held remote control (RT03) - option