TB & TM Series Thermostats

BMS & Control Carrier
TB & TM Series Thermostats
Carrier Commercial HVAC Thermostats

TB & TM Series Thermostats

The Carrier TB and TM Series Thermostats available in BACnet (TB series) or MODBUS (TM series) communication protocols come with a variety of options and features for a wide range of HVAC applications.

  • Single or Multi-Zone Compatible
  • Integrated BACnet Support

Features

Seamless BMS Integration

Designed for native integration with BACnet (TB Series) or Modbus RTU (TM Series) systems, allowing direct connection to Carrier i‑Vu® or other BMS platforms without gateways or added complexity.

Intuitive Local Comfort Control

A clear backlit LCD display and simple user interface allow zone‑level temperature adjustments, helping balance occupant comfort with centralized system control.

Flexible Application Support

Suitable for a wide range of light commercial HVAC applications, including packaged units, split systems, heat pumps, fan coil units, and VFD‑based systems.

Scalable & Retrofit‑Friendly Design

Supports multiple power options, sensor configurations, and communication protocols, making it suitable for new installations and retrofit projects.

Specifications

Product Variants

TB Series (BACnet MS/TP)

Options:
24 V, Temperature only
24 V, Temperature + Humidity + Motion
110–220 V, Temperature only
Communication: BACnet MS/TP (subordinate device)
Baud rates: Up to 76.8 kbps, automatically detected
TM Series (Modbus RTU)

Options:
24 V, Temperature + Humidity
110–220 V, Temperature only
Communication: Modbus RTU (server)
Baud rates: Up to 76.8 kbps, automatically detected

Power Requirements

24 VAC ±15%, 4 VA (no load), 76 VA full load, or
110–220 VAC (model dependent)

Sensing Elements

Temperature
Range: 41–95°F (5–35°C)
Accuracy: ±1°F (±0.5°C)

Humidity (where applicable)
Range: 10–90% RH
Accuracy: ±3% typical

Motion (TB‑24‑HM models only)
Sensor type: PIR, quad, omnidirectional
Detection distance: 16.4 ft (5 m)
Detection range: 90° × 30° (H × V)

Inputs & Outputs

Inputs
T1: Dry contact (NO/NC), 0–10 VDC AI, or 50 kΩ thermistor @ 77°F (25°C)
RS‑485: A / B communication terminals
Power: C / R – 24 VAC

Outputs
DO terminals rated up to 3 A
Additional DO or AO outputs: 0–10 VDC, 5 mA max (not isolated)

Technical Documents

Document Name Description Document Type Language Action
Installation Carrier ComfortVu Tstat Stnd TB-TM Series Installation PDF English Download
Product Data ComfortVu™ BACnet and Modbus Thermostats - Standard Models PDF English Download
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