Schneider Electric (Barber Colman) 2211-012 Thermostat

The Schneider Electric (Barber Colman) 2211-012 is a professional-grade pneumatic room thermostat engineered for precise proportional control in environmental systems. This direct acting, one-pipe thermostat is the dedicated direct replacement for 2211-411, ensuring a seamless drop-in fit for legacy maintenance and retrofits. Built with a force-balanced design, it utilizes a highly sensitive bimetal element and a factory-calibrated stainless steel ball-in-seat to provide linear branch pressure response across a 55 to 85°F setpoint range. Unlike restricted models, the 2211-012 is supplied without dial limit stops, offering full-range adjustment via the serrated thumbwheel. This unit requires an external restrictor in the supply line and is constructed from rugged die-cast aluminum and glass-filled nylon to withstand demanding commercial mechanical rooms. Whether you are servicing schools or hospitals, this Barber Colman pneumatic thermostat delivers the reliable 20 psig supply air pressure regulation required for accurate terminal equipment modulation.

• Universal Compatibility: Serves as the official replacement for 2211-411, maintaining system logic integrity without requiring recalibration of existing actuators.
• Enhanced Sensitivity: Features a high-quality bimetal thermostatic element for rapid response to space temperature fluctuations.
• Durable Construction: Incorporates a fabric-reinforced Neoprene diaphragm and stainless steel components for long-term stability in high-duty cycle environments.
• Flexible Operation: The absence of dial limit stops allows for unrestricted setpoint adjustment by authorized facility personnel.

Is the 2211-012 compatible with older Barber Colman pneumatic systems?
Yes, it is specifically designed to replace the 2211-411 and T12-301 models. It maintains the same one-pipe pneumatic footprint and mounting specifications for direct field replacement.

Does this unit include an internal restrictor?
No, as a one-pipe thermostat, this model requires an external restrictor (typically 1.0 scfh) in the supply air line to function correctly within the control loop.

What is the standard calibration for the branch line?
The unit is factory-set for a 9 psig branch line pressure when the ambient room temperature matches the setpoint on the dial.

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.