Cleveland Controls AFS-155 Air Proving Switch
The Cleveland Controls AFS-155 Air Proving Switch is a versatile differential pressure switch designed to monitor positive, vacuum, or differential air pressure in commercial HVAC and energy management systems. This adjustable air pressure switch features a wide set point range from 0.05" ± .02" to 2.0" w.c., allowing for precise field adjustments to meet specific application requirements. Built with a rugged die-cast aluminum housing and a silicone diaphragm, the AFS-155 ensures reliable performance in demanding environments. The unit includes a high-capacity SPDT switch rated for 15 Amp Non-Inductive loads at 120-277Vac, making it compatible with a variety of HVAC air flow proving circuits and blower motor interlocks. Its sensing mechanism responds to changes in pressure through 1/4" compression fittings, providing a dependable solution for differential pressure monitoring and safety verification. This industrial HVAC pressure switch is the standard for contractors requiring a durable, high-amp capacity switch for critical airflow applications.
Key Benefits for Field Application- Adjustable Operating Range: Field-tunable from 0.05" to 2.0" w.c. to accommodate diverse duct pressures and system configurations.
- High Electrical Rating: The 15 Amp SPDT switch handles higher inductive and non-inductive loads without the need for additional relays.
- Rugged Construction: Zinc-plated steel and die-cast aluminum components provide superior durability compared to plastic alternatives.
- Versatile Porting: Dual 1/4" NPT inlets labeled for positive and negative pressure simplify the HVAC air switch installation process.
- Proven Reliability: Wide operating temperature range (-40°F to 180°F) ensures consistent performance in rooftops and mechanical rooms.
How do I calibrate the set point on the AFS-155?
Calibration is handled via the adjustment screw located under the conduit cover. Use a calibrated manometer to verify the actual trip point as you rotate the screw to increase or decrease the spring tension on the diaphragm.
Can this switch be used for both positive and negative pressure sensing?
Yes. The Cleveland Controls AFS-155 is designed for differential sensing. Connect to the 'P1' port for positive pressure and 'P2' for vacuum; for differential, use both to monitor the drop across filters or coils.
What is the best mounting orientation for this switch?
To maintain the factory calibration of 0.05" w.c., mount the diaphragm in a vertical plane. Horizontal mounting is possible but will shift the set point due to the weight of the internal components on the diaphragm.
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-155 Air Proving Switch
The Cleveland Controls AFS-155 Air Proving Switch is a versatile differential pressure switch designed to monitor positive, vacuum, or differential air pressure in commercial HVAC and energy management systems. This adjustable air pressure switch features a wide set point range from 0.05" ± .02" to 2.0" w.c., allowing for precise field adjustments to meet specific application requirements. Built with a rugged die-cast aluminum housing and a silicone diaphragm, the AFS-155 ensures reliable performance in demanding environments. The unit includes a high-capacity SPDT switch rated for 15 Amp Non-Inductive loads at 120-277Vac, making it compatible with a variety of HVAC air flow proving circuits and blower motor interlocks. Its sensing mechanism responds to changes in pressure through 1/4" compression fittings, providing a dependable solution for differential pressure monitoring and safety verification. This industrial HVAC pressure switch is the standard for contractors requiring a durable, high-amp capacity switch for critical airflow applications.
Key Benefits for Field Application- Adjustable Operating Range: Field-tunable from 0.05" to 2.0" w.c. to accommodate diverse duct pressures and system configurations.
- High Electrical Rating: The 15 Amp SPDT switch handles higher inductive and non-inductive loads without the need for additional relays.
- Rugged Construction: Zinc-plated steel and die-cast aluminum components provide superior durability compared to plastic alternatives.
- Versatile Porting: Dual 1/4" NPT inlets labeled for positive and negative pressure simplify the HVAC air switch installation process.
- Proven Reliability: Wide operating temperature range (-40°F to 180°F) ensures consistent performance in rooftops and mechanical rooms.
How do I calibrate the set point on the AFS-155?
Calibration is handled via the adjustment screw located under the conduit cover. Use a calibrated manometer to verify the actual trip point as you rotate the screw to increase or decrease the spring tension on the diaphragm.
Can this switch be used for both positive and negative pressure sensing?
Yes. The Cleveland Controls AFS-155 is designed for differential sensing. Connect to the 'P1' port for positive pressure and 'P2' for vacuum; for differential, use both to monitor the drop across filters or coils.
What is the best mounting orientation for this switch?
To maintain the factory calibration of 0.05" w.c., mount the diaphragm in a vertical plane. Horizontal mounting is possible but will shift the set point due to the weight of the internal components on the diaphragm.
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-155 Air Proving Switch is a versatile differential pressure switch designed to monitor positive, vacuum, or differential air pressure in commercial HVAC and energy management systems. This adjustable air pressure switch features a wide set point range from 0.05" ± .02" to 2.0" w.c., allowing for precise field adjustments to meet specific application requirements. Built with a rugged die-cast aluminum housing and a silicone diaphragm, the AFS-155 ensures reliable performance in demanding environments. The unit includes a high-capacity SPDT switch rated for 15 Amp Non-Inductive loads at 120-277Vac, making it compatible with a variety of HVAC air flow proving circuits and blower motor interlocks. Its sensing mechanism responds to changes in pressure through 1/4" compression fittings, providing a dependable solution for differential pressure monitoring and safety verification. This industrial HVAC pressure switch is the standard for contractors requiring a durable, high-amp capacity switch for critical airflow applications.
Key Benefits for Field Application- Adjustable Operating Range: Field-tunable from 0.05" to 2.0" w.c. to accommodate diverse duct pressures and system configurations.
- High Electrical Rating: The 15 Amp SPDT switch handles higher inductive and non-inductive loads without the need for additional relays.
- Rugged Construction: Zinc-plated steel and die-cast aluminum components provide superior durability compared to plastic alternatives.
- Versatile Porting: Dual 1/4" NPT inlets labeled for positive and negative pressure simplify the HVAC air switch installation process.
- Proven Reliability: Wide operating temperature range (-40°F to 180°F) ensures consistent performance in rooftops and mechanical rooms.
How do I calibrate the set point on the AFS-155?
Calibration is handled via the adjustment screw located under the conduit cover. Use a calibrated manometer to verify the actual trip point as you rotate the screw to increase or decrease the spring tension on the diaphragm.
Can this switch be used for both positive and negative pressure sensing?
Yes. The Cleveland Controls AFS-155 is designed for differential sensing. Connect to the 'P1' port for positive pressure and 'P2' for vacuum; for differential, use both to monitor the drop across filters or coils.
What is the best mounting orientation for this switch?
To maintain the factory calibration of 0.05" w.c., mount the diaphragm in a vertical plane. Horizontal mounting is possible but will shift the set point due to the weight of the internal components on the diaphragm.
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.
