Schneider Electric (Barber Colman) 20-712 Dial Stop Kit

The Schneider Electric (Barber Colman) 20-712 Dial Stop Kit is an essential component for field-modifying pneumatic room thermostats and precision dial thermometers. This OEM internal stop kit allows technicians to establish physical maximum and minimum setpoint limits, ensuring system stability and preventing unauthorized adjustments that lead to energy waste. Engineered for a seamless fit on 2x2 inch pneumatic thermostats, the 20-712 consists of two durable dial stop pins that interface directly with the internal cam gear assembly. These pins are designed for precision; the tips can be trimmed with a razor knife during installation to ensure a perfect clearance without binding. For contractors maintaining heritage Barber Colman 22XX series controls, this thermostat accessory provides a reliable mechanical solution for securing temperature ranges in commercial and institutional environments. Utilizing genuine Schneider Electric replacement parts maintains the calibrated accuracy of your pneumatic control systems while reducing the frequency of service calls related to setpoint tampering.

• Physical setpoint limit adjustment prevents occupants from overriding HVAC system parameters.
• Compatible with a wide range of Barber Colman 2x2 pneumatic thermostats and 22XX series devices.
• Includes two dial stop pins that can be field-trimmed for custom fitting and precise alignment.
• Critical for HVAC energy management by locking in efficient operational temperature ranges.
• Maintains OEM specification standards for long-term reliability in high-traffic mechanical rooms.

What thermostats are compatible with the 20-712 kit?
This kit is specifically designed for Schneider Electric and Barber Colman 2x2 inch pneumatic thermostats, including standard 22XX series models and precision dial thermometers.

How do I install the dial stop pins?
After removing the thermostat cover, the pins are inserted into the setpoint cam gear. If the pin is too long, the point can be trimmed with a sharp blade to prevent mechanical binding against the housing.

Does this kit include more than one pin?
Yes, the 20-712 comes as a kit containing two pins, allowing you to set both a high and a low temperature limit for a single device.

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.