Aeromotive AFS-155-163 Air Proving Switch

The AFS-155-163 Air Proving Switch is a precision pressure sensing device designed for HVAC systems, burners, furnaces, and fuel-burning equipment. This general purpose airflow proving switch accurately detects positive, negative, or differential air pressure to ensure safe and efficient operation of air handling systems.

Key Features:

• Pressure range: 0.05 ± 0.02" W.C. to 2.0" W.C. for reliable air pressure detection
• Electrical rating: 120-277 VAC, 15 Amp non-inductive for versatile applications
• Field adjustable set point for customized operation and precise control
• Compact design with diaphragm mounting in any vertical plane
• SPDT snap-action switch mechanism for reliable switching
• Compatible with air and combustion by-products that won't degrade silicone

This air proving switch improves system efficiency by ensuring optimal airflow, prevents equipment damage from insufficient air pressure, and helps maintain safe operating conditions. The switch features compression ferrule connections for easy installation and long-lasting performance in demanding HVAC environments.