Peco Controls TB155-046 Thermostat

The Peco Controls TB155-046 is a professional-grade fan coil thermostat designed for high-performance HVAC 2-pipe and 4-pipe systems. Built with a veteran technician's needs in mind, this unit features self-configuring circuitry that automatically adjusts to input voltages ranging from 24 to 277 VAC, eliminating the need for separate low and line voltage stocking. Its automatic changeover capability ensures seamless transitions between heating and cooling modes, maintaining a precise 4°F deadband for optimal efficiency. The 3-speed fan control (High, Medium, Low) allows for granular airflow management, while the on-off system switch provides a positive shut-off for seasonal maintenance. Provided with wire leads and two distinct cover plates, the TB155-046 supports both vertical and horizontal mounting configurations on standard device boxes, making it a versatile choice for commercial retrofits or new construction.

• Universal Voltage Compatibility: Advanced circuitry supports 24, 120, 240, and 277 VAC applications, simplifying inventory and field installation.
• Automatic System Integration: Internal auto changeover logic manages heat/cool switching without user intervention.
• Rugged Solid-State Precision: Provides reliable two-position control for valves and relays, handling both inductive and resistive loads.
• Flexible Mounting: Includes hardware for both vertical and horizontal orientation to fit any existing wall footprint.
• Remote Sensing Ready: Compatible with 10k ohm thermistor remote sensors for applications where local sensing is impractical.

Can this thermostat be used with a 4-pipe system?
Yes, the Peco TB155-046 is engineered for both 2-pipe and 4-pipe fan coil units, provided the system requires standard on/off control of valves.

Does it require a neutral wire for line voltage applications?
Yes, in a line voltage setup, the L2 or neutral must be connected to the appropriate lead to power the internal electronics and fan circuits.

Can the fan be set to cycle with the call for heat or cool?
While the standard configuration supports continuous fan operation, cycled operation is achievable by integrating a load-handling relay with the thermostat outputs.

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.