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Fancoil controller for 2-pipe systems, white, modbus communication

Product Description

The Orchid 1 modbus communicating thermostat is designed for a 3 speed fan and a motorized valve control in a fancoil system. The typical application including:

  • 2-pipe cool only/heat only/manual changeover
  • 4-pipe cooling/heating manual/automatic changeover
  • Ventilation mode
  • Manual or automatic 3-speed fan control
  • On/off water valve control
  • Using Modbus RTU protocol that can be easily integrated into building automation systems.

Technical Properties

Protection class


Temp. setpoint range 10 ... 32 oC
Control output signal

PI, on/off output

Additional Descriptions
  • Auto Cycle times 100,000 times
  • Manual Cycle times 10,000 times
  • Display range 0 ~ 37C
  • Ambient storage limits -30 ~ +60C
  • Humidity limits 5~90% RH, non-condensing
  • Pollution Degree 2
  • Protection against electric shock class Class II
  • Rated Impulse Voltage: 2500V
  • Maximum Temperature for relay wiring 155C
  • Physical Layer EIA485
  • Protocol Modbus RTU
  • Baud rate 4800/9600(Default)/19200
  • Parity None
  • Error checking mechanism CRC
  • Power consumption <2W
  • Action Type: 1
  • Electronic control software class Class A
Temperature control accuracy +/- 1 oC
Ambient temp. limit

0~ +49C 

Power supply

220/230VAC, 50/60Hz 

Product description

Fancoil controller for 2-pipe systems, white, modbus communication