Description
Cleveland Controls AFS-A Air Pressure Sensing Switch
The Cleveland Controls AFS-A is a reliable, field-proven air pressure sensing switch designed for HVAC and combustion control applications. It changes contact state on increasing pressure, making it ideal for proving airflow, monitoring fan operation, and safeguarding combustion equipment. Its wide sensing range and broad voltage compatibility make it a versatile solution for commercial and light-industrial installations.
Key Features
- Changes contacts on increasing pressure — ideal for airflow proving and fan status monitoring
- Sensing range: 0.05″ ± 0.02″ w.c. to 12″ w.c. — covers a broad spectrum of HVAC and combustion applications
- Wide voltage compatibility: 120V–277Vac — suitable for a variety of commercial control circuits
- Maximum pressure rating: 1/2 PSI — protects switch integrity under system pressure spikes
- Compatible media: air or combustion by-products that will not degrade silicone — safe for use in furnace, boiler, and burner proving circuits
- Silicone-compatible wetted materials — ensures long service life in combustion environments
Specifications
- SKU: AFS-A
- Brand: Cleveland Controls
- Switch Action: Change contacts on increasing pressure
- Sensing Range: 0.05″ ± 0.02″ w.c. to 12″ w.c.
- Voltage Rating: 120V–277Vac
- Maximum Pressure: 1/2 PSI
- Compatible Media: Air or combustion by-products that will not degrade silicone
Typical Applications
- Combustion air proving on furnaces and boilers
- Draft inducer and blower fan status verification
- Duct static pressure monitoring
- Burner management and safety interlock circuits
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