schneider-electric.com | 1 Specification Sheet © 2020 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. June 2020 F-28145-2 nk North America (USA): +1 888 444 1311 Europe, Middle East & Africa (Sweden): +46 10 478 2000 Asia Pacific (Singapore): +65 6484 7877 product.support@schneider-electric.com www.schneider-electric.com Product Description The TH903 Series thermostats are optimized for office build- ing, hotel and residential terminal HVAC control. The TH900 Series is ideal for PTAC, Fan Coil, Heat Pump and Gas/Oil Furnace applications. This device includes a white glass display with mechanical buttons on a white base. The TH903 Series is a wall surface mount device that is easy to operate. These thermostats feature microprocessor-based controls and large LCD screens which display operation status (cooling, heating, auto), fan speed, room temperature and set-point. Features • White glass housing with mechanical buttons • Large back-lit LCD screen • Eco function for energy savings • 7-day programmability • Real-time clock keeps time during power failures • Two aux inputs for keycard/window switch and external occupancy sensor/door switch • Non-volatile memory (EEPROM) retains user settings during power loss • Alert function facilitates temperature sensor maintenance • Standalone and optional Zigbee 3.0 and Modbus communication Available Products Part NumberApplicationDisplay Fan Control Occupancy Aux. InputsComm.ProgrammabilityHousing TH903-P-W PTAC: 1 Heat 1 Cool, FCU: 2/4-pipe LCD, Positive 3-Speed, Auto PIR2NoneNoneWhite TH903-ZP-W PTAC: 1 Heat 1 Cool, FCU: 2/4-pipe LCD, Positive 3-Speed, Auto PIR2Zigbee 3.0NoneWhite TH903-ZPM-W PTAC: 1 Heat 1 Cool, FCU: 2/4-pipe LCD, Positive 3-Speed, Auto PIR2 Zigbee 3.0 & Modbus NoneWhite TH903-DM-W PTAC: 3 Heat 2 Cool LCD, Positive1-SpeedNone2Modbus7-DayWhite SpaceLogic Thermostat TH903 for PTAC, Fan Coil, Heat Pump & Gas/Oil Furnace Applicationsschneider-electric.com | 2 North America (USA): +1 888 444 1311 Europe, Middle East & Africa (Sweden): +46 10 478 2000 Asia Pacific (Singapore): +65 6484 7877 product.support@schneider-electric.com www.schneider-electric.com © 2020 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. June 2020 F-28145-2 nk SpaceLogic Thermostat TH903 Specification Sheet Specifications PTAC Heat: max. 3 stages Cool: max. 2 stages FCU2-pipe, 4-pipe Sensing elementDigital temperature sensor Accuracy±0.5°C @ 0 to 50°C (±1°F@32 to 122°F) Set-point range5 to 35°C (41 to 95°F) Display range0 to 50°C (32 to 122°F) Display resolution0.5°C (1°F) Operating temp.0 to 50°C (32 to 122°F) Operating humidity0 to 95 % RH (non-condensing) Storage temp.-20 to 60°C (-4 to 140°F) Storage humidity0 to 90 % RH (non-condensing) PIR detection120° (±60°) PIR detection distance 10m at 0°, 5m at 60°, 5m at -60° Power consumptionStandby < 0.5W Power supply24 VAC @ 50/60Hz or 24 VDC Terminal cable14 AWG to 18 AWG solid or stranded wire Load rating3A resistive, 1A inductive, 1A pilot duty Protection classIP 30 HousingFlame-retardant PC Dimensions120 x 120 x 26.5mm (4.72 X 4.72 X 1.04 in.) Pollution degreePollution Degree 2 Operation typeType 1.B Regulatory Information Agency approvals FCC CFR 47 Part 15 Subpart B Class B RSS 247 ICES-003:issue 6 UL 60730-1 UL 60730-2-9 CAN/CSA-E60730-1 CAN/CSA-E60730-2-9 European Conformance CE: IEC/EN 60730-1 IEC/EN 60730-2-9 RoHS compliance 2011/65/EU 2015/863/EU REACH compliance1907/2006/EC Communication • Modbus - Configurable at 4800, 9600, 19200, 38400 & 76800 bps - Maximum 31 nodes per RS-485 network • Zigbee 3.0 - Frequency 2.4 to 2.48 GHz - Communication range up to 100 m LOS in open air Functions Set-point Adjustment – The set-point buttons allow users to adjust the set-point for the space in 0.5 °C/ 1 °F increments. Fan Speed – Users can select fan speed (High, Medium, Low, Auto) by pressing the Fan button. Mode Control – Users can switch operating modes (Heating, Cooling, Auto) by pressing the Mode button. Eco Mode – Minimize the energy consumption in an unoccu- pied room when thermostat is ON. Provides quick resumption when people enter the room. Occupied/Unoccupied Status – Smart logic can determine whether a room is in the occupied state on the basis of inputs such as the keycard/window switch, external occupancy sensor/door switch, and on-board PIR. When a room is determined to be in the unoccupied state, the system enters Eco mode. Extreme Temperature Protection • Heating mode automatically shuts down if room temperature exceeds 34.5°C (94°F) • Cooling mode automatically shuts down if room temperature drops below 4.5°C (40°F) • Configurable frost protection set-point range from 5 to 15°C (41 to 59°F). Default is 5°C (41°F). • Configurable high temperature protection set-point range from 25 to 35°C (77 to 95°F). Default is 35°C (95°F). • When room temperature exceeds the upper limit (50°C/122°F), the LCD will display ‘HI’. • When room temperature drops below the lower limit (0°C/32°F), the LCD will display ‘LO’. • When the on-board temperature sensor is open or short circuited, the LCD will display ‘Er’. Dimensions mm (in.) 26.5 (1.04) 120 (4.72) 120 (4.72) 48 (1.86) 85 (3.31) 120 (4.72) 120 (4.72) 70 (2.72) 60 (2.32) Front ViewMounting ViewBack ViewSide ViewNext >