Description
The Cleveland Controls AFS-298-391 is a precision air pressure sensing switch engineered for reliable performance in HVAC, combustion, and air-handling applications. Designed to monitor and respond to changes in air or combustion by-product pressure, this switch provides dependable contact switching to protect equipment and ensure safe, efficient system operation.
How It Works
The AFS-298-391 monitors differential air pressure within its sensing range and changes contact state on increasing pressure at the factory-set trip point. This makes it ideal for proving airflow, detecting blocked filters, monitoring draft conditions, and verifying burner operation in furnaces, boilers, and air handlers.
Key Specifications
- Sensing Range: 0.05″ w.c. ± 0.02″ w.c. to 12″ w.c.
- Set Point: Changes contacts on increasing pressure at 0.30″ w.c. ± 0.03″ w.c.
- Supply Voltage: 120V–277V AC
- Maximum Inlet Pressure: ½ PSI (0.5 PSI)
- Compatible Media: Air or combustion by-products that will not degrade silicone
Features & Benefits
- Wide voltage compatibility (120V–277V AC) suits a broad range of commercial and residential HVAC equipment
- Silicone-compatible wetted materials ensure durability in combustion by-product environments
- Precise trip point (0.30″ w.c. ± 0.03″ w.c.) delivers accurate, repeatable switching performance
- Wide sensing range (0.05″ to 12″ w.c.) provides versatility across multiple application types
- Compact design for easy installation in tight equipment spaces
- Suitable for airflow proving, draft proving, and filter monitoring applications
Typical Applications
- Gas furnace induced-draft and pressure proving
- Boiler combustion air proving
- Air handler and fan airflow verification
- Dirty filter detection and monitoring
- Combustion safety interlock circuits
Reviews
There are no reviews yet.