Schneider Electric (Barber Colman) 2212-118 Thermostat

As a veteran HVACR technician, I know that when you're looking for a reliable pneumatic room thermostat, consistency and ease of field calibration are paramount. The Schneider Electric 2212-118 (formerly Barber Colman) is a heavy-duty direct acting thermostat engineered for precise proportional control of pneumatic actuators and damper control systems. This two-pipe thermostat features a highly sensitive bimetal sensing element and a pilot-operated relay with pneumatic feedback, ensuring stable, linear operation across its entire 55 to 85°F setpoint range. Built with a rugged die-cast aluminum base and fabric-reinforced neoprene diaphragm, this unit is designed to handle a 20 psig supply (30 psig max) with a low air consumption rate of 15 scim. It is a drop-in direct replacement thermostat for legacy models including the 2210-015, 2212-018, and 2212-418. Unlike models with internal dial stops, the 2212-118 offers an unrestricted serrated thumbwheel for full-range adjustment, making it the go-to choice for commercial HVAC systems requiring frequent setpoint flexibility.

• Direct Replacement Logic: Seamlessly replaces Barber Colman 2210-015, 2212-018, and 2212-418 series without the need for extensive repiping or bracket modifications.
• Stable Linear Feedback: The stainless steel ball-in-seat design provides pneumatic feedback, preventing the hunting issues common in lower-grade pneumatic stats.
• Field Adjustable Throttling: Features a patented adjustable bimetal allowing for a 2 to 12°F throttling range, ensuring the thermostat matches the specific response time of your air handling unit.
• Integrated Protection: Equipped with internal branch line filters and a leak-proof, self-closing gauge tap for easy troubleshooting with a standard branch tap gauge adaptor.

Is the Schneider 2212-118 compatible with my existing Barber Colman cover?
Yes, this unit is designed to work with standard 2200 series covers. However, please note that covers are typically sold separately unless purchased as part of a specific kit. This model is ideal for installations where you already have a 21-930 or 21-933 series cover in place.

How do I calibrate the 2212-118 for a 9 psig branch pressure?
With the ambient temperature at the setpoint, use a 20-881 thermostat wrench (1/16" hex) on the calibration screw. Turning clockwise will increase the branch pressure. Always use a clean oil-free dry air supply to prevent fouling the bimetal or internal orifices.

Does this thermostat include dial limit stops?
No, the 2212-118 is the "without dial limit stops" version, allowing users to adjust the setpoint throughout the full 55-85°F range. If your application requires fixed temperature limits for energy savings, you would need the 2212-119 or a model with factory-installed 20-712 stop kits.

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.