Description
The Cleveland Controls AFS-298-112-148 is a precision-engineered air pressure sensing switch designed for reliable performance in HVAC, combustion, and air-handling applications. Built to handle both air and combustion by-products that will not degrade silicone, this switch is a dependable solution for systems requiring accurate differential pressure monitoring and automatic contact switching.
How It Works
The AFS-298-112-148 monitors system air pressure and changes its electrical contacts on increasing pressure. When pressure rises to the set point of 0.45″ w.c. (± 0.05″ w.c.), the switch actuates, making it ideal for proving airflow, monitoring fan operation, filter status, or burner draft conditions in residential and commercial HVAC equipment.
Key Specifications
- Sensing Range: 0.05″ w.c. ± 0.02″ w.c. to 12″ w.c.
- Set Point: Change contacts on increasing pressure at 0.45″ w.c. ± 0.05″ w.c.
- Supply Voltage: 120V–277Vac
- Maximum Inlet Pressure: ½ PSI (0.5 PSI)
- Compatible Media: Air or combustion by-products that will not degrade silicone
- SKU: AFS-298-112-148
Features & Benefits
- Wide voltage compatibility (120V–277Vac) for flexible installation across commercial and industrial systems
- Accurate set-point actuation ensures reliable airflow and pressure proving
- Silicone-compatible media rating supports use in combustion and flue gas environments
- Broad sensing range (0.05″ to 12″ w.c.) accommodates a variety of HVAC pressure monitoring applications
- Compact, purpose-built design from Cleveland Controls — a trusted name in air pressure sensing
Typical Applications
- Airflow proving in furnaces, air handlers, and rooftop units
- Draft inducer and combustion blower monitoring
- Filter status and dirty filter detection
- Fan failure detection and interlock control
- Commercial HVAC pressure monitoring and safety shutdown circuits
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