Description
Cleveland Controls AFS-222-121 Air Flow Switch
The Cleveland Controls AFS-222-121 is a reliable, field-proven air flow switch engineered for demanding HVAC and combustion applications. Designed to detect the presence or absence of airflow, this switch provides dependable proof-of-flow verification to protect equipment and ensure safe system operation. Its wide sensing range and broad voltage compatibility make it a versatile solution for commercial and industrial installations.
Key Features
- Wide differential pressure sensing range: .05″ ± .02″ to 12.0″ w.c.
- Broad input voltage range: 120–277Vac for flexible installation across multiple system voltages
- SPDT (Single-Pole, Double-Throw) contact arrangement for both normally open and normally closed circuit control
- Maximum pressure rating: 1/2 PSI, suitable for low-pressure air and combustion by-product applications
- Compatible with air or combustion by-products that will not degrade silicone — ideal for flue gas and exhaust air monitoring
- Durable construction designed for long service life in commercial HVAC environments
Specifications
- Model: AFS-222-121
- Brand: Cleveland Controls
- Sensing Range: .05″ ± .02″ – 12.0″ w.c.
- Voltage: 120–277Vac
- Contact Arrangement: SPDT
- Maximum Pressure: 1/2 PSI
- Media: Air or combustion by-products that will not degrade silicone
Applications
- Proof-of-airflow verification in air handling units (AHUs)
- Fan/blower operation confirmation
- Combustion air proving in boilers and furnaces
- Exhaust and ventilation system monitoring
- Commercial and industrial HVAC control panels
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