Optimized Airflow: Precision-molded ventilation slots ensure the thermostat maintains its factory calibration through consistent airflow

always verify the maximum pressure and temperature ratings against your specific steam system requirements before installation

This specific model (325-5L-1) typically requires a 12A39 vent limiter for indoor use without a vent line to the atmosphere

This model is strictly for 45-degree rotation dampers

It is statically balanced to ensure vibration-free performance

Belimo TFRB24-SR Actuator R-410A Optimized Airflow: Precision-molded ventilation slotsThe Belimo TFRB24 SR is a compact spring return actuator designed for the fail safe operation of dampers and valves in HVAC systems. Providing 22 in lb torque, this proportional control actuator operates on a 24VAC DC power supply and accepts a 2 10 VDC control signal for precise modulation. Built for high reliability applications, it features brushless DC motor technology, ensuring consistent torque delivery and energy efficiency while eliminating