Trane BAYSTAT152A Thermostat

The Trane BAYSTAT152A is the professional-grade 3H/2C programmable touchscreen thermostat engineered for high-demand commercial and residential applications. As a field-ready direct replacement for THT2552 (and superseding THT2775, THT02553, and BAYSTAT052AA), this controller provides seamless communication with Trane Voyager systems and other 24 VAC multi-stage equipment. Featuring a robust LCD touchscreen interface, the unit supports up to three stages of heating and two stages of cooling, making it ideal for heat pump systems with auxiliary heat or high-efficiency conventional rooftop units.

Designed for reliability in the field, the BAYSTAT152A operates on 24V power—eliminating battery-related service calls—and features 10K Ohm sensor compatibility for remote temperature sensing via BAYSENS077A or BAYSTAT170A. The internal logic offers flexible 7-day, 5/2, or 5/1/1 HVAC scheduling with up to four periods per day. With integrated humidity display and setpoint control (30% to 80% range), this thermostat allows for comprehensive indoor air quality management without requiring additional external hardware in most Voyager configurations.

• Universal Compatibility: Serves as a primary service part for the entire Trane Voyager product line and replaces several obsolete THT-series models.
• Advanced Control Logic: Supports 3-stage heating / 2-stage cooling with selectable system modes: Heat, Cool, Auto, Off, and Emergency Heat.
• Precision Sensing: Includes an internal humidity sensor and dedicated terminals for 4–20 mA remote humidity sensors and 10K type 2 remote temperature sensors.
• Configurable Security: Professional touchscreen lockout features prevent unauthorized setpoint tampering while maintaining access to screen cleaning and filter reset functions.
• Simplified Wiring: Removable terminal blocks accommodate 18 to 22 AWG wire, significantly reducing installation time during unit retrofits.

Is the BAYSTAT152A compatible with non-Trane systems?

While optimized for Voyager units, it functions as a standard 24 VAC multi-stage thermostat compatible with most conventional or heat pump systems requiring up to 3H/2C control.

Does this model require batteries to maintain programming?

No, the unit is powered via a 24V common wire (C-terminal), ensuring non-volatile memory retention during power interruptions.

Can I use an outdoor sensor with this thermostat?

Yes, the BAYSTAT152A supports remote outdoor temperature sensing, which is critical for heat pump balance point control and auxiliary heat lockout functions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.