The TC900 Series fan coil thermostats are optimized for office building, hotel, hospital and residential applications. The TC900 Series can be used for 2-pipe or 4-pipe applications. Available in two housing finishes: optimum (black glass display with capacitive buttons on a white base) or medium (white glass display with mechani cal buttons on a white base). The TC900 Series is both easy to operate and install. The devices feature microprocessor-based control and large backlit LCD screens which display operation status (cooling, heating, and ventilation), fan speed, room temperature and set-point. Functions Set-point Adjustment The set-point buttons allow users to adjust the set point (in 0.5 °C increments) for the space. Fan Speed Users can select a fan speed (High, Medium, Low or Automatic) by a short press of the FAN/ECO button (TC903) or the FAN button (TC907). Mode Control Users can switch operating modes (Heating, Cool ing, or Ventilation) by pressing the Mode button. Eco Mode To begin Eco mode, do a short press of the FAN/ ECO button (TC903) or the ECO button (TC907) until the ECO icon flashes in the lower right corner of the LCD display. In Cooling mode, the set-point is automatically adjusted to 26°C and the fan speed is set to Low. In Heating mode, the set-point is automatically adjusted to 18 °C and the fan speed is set to Low. To exit Eco mode, do a short press of the FAN/ECO button (TC903) to choose any other fan speed, as desired, or do a short press of the ECO button (TC907) to cancel Eco mode. Button Lockout Function This function allows the buttons to be deactivated to prevent thermostat operation by others. Low Temperature Protection If the room temperature drops below 5 °C, Heating mode will start automatically and the fan speed will be set to High. Once the temperature reaches 7 °C, the thermostat will switch off the output. Alert In the event of an operating exception, the thermo stat will attempt to command the valve to close

Rated supply voltage: 90...240 V AC 50/60 Hz ambient air temperature for operation: 0…50 °C colour: White "connections - terminals: Screw terminal (back) - 2 cable(s) Screw terminal (back) - 1 cable(s)" control type: mechanical, for thermostat, 2 positions ON-OFF button, for actuator, depth: 40 mm device application: Fan device short name: TC903 display type: Backlit LCD screen function available: Setpoint adjustment, Fan control, Mode selection, Economiser, Disable functions, Alarm, Low temperature protection height: 86 mm housing colour: White information displayed: Ambient room temperature 0 to 50 °C, Time, Day, Temperature alarm, Communication status ok, Current program IP degree of protection: IP20 max power consumption in W: 1 W measurement accuracy: Temperature: +/- 1 °C, network frequency: 50 Hz/60 Hz output voltage: 240 V AC 5 A for relay/ 240 V AC 2 A for load pollution degree: 2 product certifications: CE product name: SpaceLogic TC900 product or component type: Thermostat product specific application: 2-pipe system range: SpaceLogic relative humidity: 5…95 % sensor type: 100 kOhm NTC thermistor temperature setting range: 5…35 °C width: 86 mm