BACnet Thermostat

X-THB-24-DL00

The BACnet Thermostat  is a Wi-Fi touchscreen thermostat with an advanced remote sensor bus, designed for new or replacement commercial and residential applications. Use the X-THB for either conventional or heat pump applications (Gas/Elect 2H/2C, HP 3H/2C), along with humidification, fresh air damper, IAQ controls, CO2 controls, and more.


Daily commercial scheduling (4 events per day) and up to 80 Additional Events (40 Special and 40 Calendar Events) and Demand Response Control are included in all X-THB thermostats. The unique scheduling structure also supports the powerful features of adjustable temporary override times and temperature ranges, occupied and unoccupied events, keypad lockout, and many more features.

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Technical Description

Rated Voltage: 20V to 30VAC, 24VAC nominal, or 24VDC with jumper removed on faceplate

Rated A.C. / D.C. Current: 0.05 to 0.75 AC / 0.0 to 0.75 DC Amp continuous, per output, surges to 3 Amps maximum

Thermostat Sensing Range: 32˚F to 124°F (0˚C to 48°C)

Control Accuracy: ±1°F @ 68°F (±0.5°C @ 20°C)

Temperature Control Range:
  • Heating: 38 to 88°F (6 to 30°C) in 1° steps
  • Cooling: 60 to 108°F (16 to 40°C) in 1° steps

Minimum Deadband: 2°F (1°C)

Equipment Terminations:
  • R - 24VAC switching voltage from HVAC Equipment
  • W1 - Heat1 or Aux/Emer Heat
  • G - Fan, Y1-Compressor1
  • Y2 - Compressor2
  • O/W2 - Heat2 or Rev. Valve in Cooling
  • B - Rev. Valve in Heating

Aux Relay Terminations:

  • K/H/D – Humidify / Dehumidify / Relay Schedule (KHD or K2) / Damper / IAQ / CO2
  • K2 – Relay Schedule (KHD or K2) / Damper / IAQ / CO2

Power Terminations:

  • R - 24VAC switching voltage from HVAC Equipment
  • 24V - Separate Power (24VAC/DC), requires faceplate jumper removal
  • 24V(c) - power return

Input Terminations:

  • LED1 (Filter Icon Selectable),
  • LED2 (Fault Icon Selectable), CLK1 ( + ), CLK2 ( - ) (Occupancy)

Remote Sensor Terminations:

  • RS+V - Power,
  • RS2 - Return, RS1 - Data

Wireless Radio:

  • 2.4GHz 802.11b/g
  • Security: Open, WEP, WPA-PSK, WPA2-PSK