Cleveland Controls AFS-298-391 Sensing Switch
The Cleveland Controls AFS-298-391 is a high-performance air pressure sensing switch designed for precision in commercial HVAC and energy management systems. Engineered as a general-purpose differential pressure switch, it monitors positive, negative, or vacuum air pressure with a field-adjustable set point range from 0.05" w.c. to 12.0" w.c. This unit is factory-calibrated to change contacts on increasing pressure at 0.30" w.c. (± 0.02" w.c.), ensuring reliable air flow verification for fan proving and burner ignition sequences. Built with a rugged plated housing, it features a durable silicone diaphragm compatible with air and non-corrosive combustion by-products. The SPDT electrical contacts support 120V to 277V AC circuits, and the device handles a maximum pressure of 0.5 PSI. For optimal performance, mount the diaphragm in a vertical plane. Its versatile design makes it an industry-standard choice for contractors seeking a field-adjustable pressure switch that maintains consistency across demanding thermal and industrial process cycles.
Key Benefits
- Precision Set Point Control: Offers a wide adjustable range of 0.05" to 12" w.c., set at 0.30" w.c. for immediate deployment in standard HVAC applications.
- Industrial-Grade Build: Features a high-integrity silicone diaphragm and plated metal housing for resistance against heat and combustion by-products.
- High Compatibility: Operates on standard 120-277V AC power, making it a drop-in replacement for numerous furnace air switches and energy management controls.
- Versatile Sensing: Capable of monitoring positive, negative, or differential pressure through dual sample line connections.
Common Questions
How do I adjust the set point on the AFS-298-391?To field-calibrate the switch, use the external adjustment screw located on the housing. Turn the screw counterclockwise to decrease the set point or clockwise to increase it, ensuring you use a calibrated manometer for professional-grade accuracy during commissioning.
Can this switch be used in flue gas applications?Yes, the internal silicone components are specifically designed to resist degradation from air or combustion by-products, making it suitable for stack monitoring and draft induction verification.
What is the proper mounting orientation?For the most accurate sensing and to achieve the lowest specified set point, the unit should be surface-mounted with the diaphragm positioned in a vertical plane.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Cleveland Controls AFS-298-391 Sensing Switch
The Cleveland Controls AFS-298-391 is a high-performance air pressure sensing switch designed for precision in commercial HVAC and energy management systems. Engineered as a general-purpose differential pressure switch, it monitors positive, negative, or vacuum air pressure with a field-adjustable set point range from 0.05" w.c. to 12.0" w.c. This unit is factory-calibrated to change contacts on increasing pressure at 0.30" w.c. (± 0.02" w.c.), ensuring reliable air flow verification for fan proving and burner ignition sequences. Built with a rugged plated housing, it features a durable silicone diaphragm compatible with air and non-corrosive combustion by-products. The SPDT electrical contacts support 120V to 277V AC circuits, and the device handles a maximum pressure of 0.5 PSI. For optimal performance, mount the diaphragm in a vertical plane. Its versatile design makes it an industry-standard choice for contractors seeking a field-adjustable pressure switch that maintains consistency across demanding thermal and industrial process cycles.
Key Benefits
- Precision Set Point Control: Offers a wide adjustable range of 0.05" to 12" w.c., set at 0.30" w.c. for immediate deployment in standard HVAC applications.
- Industrial-Grade Build: Features a high-integrity silicone diaphragm and plated metal housing for resistance against heat and combustion by-products.
- High Compatibility: Operates on standard 120-277V AC power, making it a drop-in replacement for numerous furnace air switches and energy management controls.
- Versatile Sensing: Capable of monitoring positive, negative, or differential pressure through dual sample line connections.
Common Questions
How do I adjust the set point on the AFS-298-391?To field-calibrate the switch, use the external adjustment screw located on the housing. Turn the screw counterclockwise to decrease the set point or clockwise to increase it, ensuring you use a calibrated manometer for professional-grade accuracy during commissioning.
Can this switch be used in flue gas applications?Yes, the internal silicone components are specifically designed to resist degradation from air or combustion by-products, making it suitable for stack monitoring and draft induction verification.
What is the proper mounting orientation?For the most accurate sensing and to achieve the lowest specified set point, the unit should be surface-mounted with the diaphragm positioned in a vertical plane.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Cleveland Controls AFS-298-391 is a high-performance air pressure sensing switch designed for precision in commercial HVAC and energy management systems. Engineered as a general-purpose differential pressure switch, it monitors positive, negative, or vacuum air pressure with a field-adjustable set point range from 0.05" w.c. to 12.0" w.c. This unit is factory-calibrated to change contacts on increasing pressure at 0.30" w.c. (± 0.02" w.c.), ensuring reliable air flow verification for fan proving and burner ignition sequences. Built with a rugged plated housing, it features a durable silicone diaphragm compatible with air and non-corrosive combustion by-products. The SPDT electrical contacts support 120V to 277V AC circuits, and the device handles a maximum pressure of 0.5 PSI. For optimal performance, mount the diaphragm in a vertical plane. Its versatile design makes it an industry-standard choice for contractors seeking a field-adjustable pressure switch that maintains consistency across demanding thermal and industrial process cycles.
Key Benefits
- Precision Set Point Control: Offers a wide adjustable range of 0.05" to 12" w.c., set at 0.30" w.c. for immediate deployment in standard HVAC applications.
- Industrial-Grade Build: Features a high-integrity silicone diaphragm and plated metal housing for resistance against heat and combustion by-products.
- High Compatibility: Operates on standard 120-277V AC power, making it a drop-in replacement for numerous furnace air switches and energy management controls.
- Versatile Sensing: Capable of monitoring positive, negative, or differential pressure through dual sample line connections.
Common Questions
How do I adjust the set point on the AFS-298-391?To field-calibrate the switch, use the external adjustment screw located on the housing. Turn the screw counterclockwise to decrease the set point or clockwise to increase it, ensuring you use a calibrated manometer for professional-grade accuracy during commissioning.
Can this switch be used in flue gas applications?Yes, the internal silicone components are specifically designed to resist degradation from air or combustion by-products, making it suitable for stack monitoring and draft induction verification.
What is the proper mounting orientation?For the most accurate sensing and to achieve the lowest specified set point, the unit should be surface-mounted with the diaphragm positioned in a vertical plane.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
