TRA-F121-A is a Modbus fan coil thermostat. It has a built-in temperature
sensor and controls 3 speed fans and valves for heating or cooling. Two inputs read open contact or temperature signals and may be configured as automatic heat/cool switch, occupation sensor and more.
Applications
- Fan coil systems
- 2-pipe fancoil (cooling or heating ON/OFF valve)
- 2-pipe fancoil with 3-position valve (cooling or heating valve)
- 2-pipe fancoil and electric heater
- 4-pipe fancoil (cooling and heating ON/OFF valve)
- Floor heating systems (ON/OFF or 3-position valve)
- Chilled ceilings or chilled beams systems (ON/OFF or 3-position valve)
Functions
- Flush mount on all 75x75x40mm wall mounting box or larger boxes
- Comfort, Economy and Protection mode
- ON/OFF and 3-position valve control
- 110 – 230VAC operating voltage
- Manual or automatic heating / cooling changeover
- Room temperature control via built-in temperature sensor
- Selection of application via parameter
- Select operating mode via operating mode button on the thermostat
- 1- or 3-speed fan control (automatically or manually)
- Display of current room temperature or setpoint in °C or °F
- Display of outdoor temperature received from Modbus master
- Minimum and maximum limitation of room temperature setpoint
- 2 configurable inputs temperature or digital
- Key lock function
- Floor heating temperature limitation
- Reload default settings for commissioning and control parameters
- RTU Modbus slave
Download the manual here: