Cleveland Control AFS-222-112 Air switch

The Cleveland Controls AFS-222-112 is a professional-grade adjustable differential air pressure switch designed for critical airflow proving and pressure monitoring in HVAC and building automation systems. Engineered for reliability, this SPDT air switch features a high-grade silicone diaphragm and an adjustable set point range from 0.05" to 12.0" w.c., making it highly versatile for sensing positive, negative, or differential pressure. The -112 configuration is specifically equipped with 1/4" barb connections, allowing for direct integration with flexible tubing and streamlining installation for field contractors. Its rugged plated housing includes a 1/2" conduit opening and internal screw terminals to protect electrical transitions in demanding mechanical environments.

• Broad Set Point Versatility: Field-adjustable range of 0.05" to 12.0" w.c. allows for precise calibration across diverse static pressure and airflow proving applications.
• Simplified Hookup: Integrated 1/4" barbed sample line connectors eliminate the need for extra compression fittings when using flexible vinyl or silicone tubing.
• Contractor-Grade Durability: Rated for 100,000 cycles at 0.5 psi and features a 15A non-inductive electrical rating at 277 VAC for robust switching performance.
• Flexible Mounting: Maintains accuracy when mounted in any vertical plane, providing the installation flexibility needed in tight mechanical closets or duct runs.

How do I calibrate the set point for specific duct pressures?
To adjust the Cleveland Controls AFS-222-112, turn the adjustment screw counter-clockwise until it stops, then turn it four full rotations clockwise to engage the spring. From there, each additional full turn increases the set point by approximately 1.2" w.c. Always verify the final "operate" and "release" points with a calibrated digital manometer.

What tubing is compatible with the barb connections?
The 1/4" barbs are designed for flexible slip-on tubing. For runs under 10 feet, 1/4" OD tubing is standard, while longer runs may require 1/4" or 1/2" ID tubing to maintain signal integrity and avoid pressure lag.

Can this switch be used to monitor combustion air?
Yes, the AFS-222-112 is suitable for air and combustion by-products that do not degrade its internal silicone diaphragm, making it an ideal choice for burner proving switch applications.

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.