A.J. Antunes 8224210005 Pressure Switch

The A.J. Antunes 8224210005 is a high-precision air differential pressure switch engineered for low-pressure sensing applications in commercial HVAC and industrial burner systems. Featuring an adjustable operating range of .05" to 1" W.C., this SPDT pressure switch provides reliable circuit control by monitoring the pressure differential between two air sources. Built for durability in demanding environments, the unit includes dual porting with a 1/4" male NPT and a 1/8" female NPT connection at the bottom. The FM approved pressure switch ensures compliance with safety standards for fuel-fired equipment and ventilation monitoring. Its single pole double throw configuration allows for versatile wiring as either a normally open or normally closed contact, making it an essential component for interlock safety circuits and proving airflow in combustion systems. Technicians can rely on its sensitive diaphragm and snap-action switch for consistent repeatability in critical HVACR applications.

• Precise Adjustment: Covers a narrow .05" to 1" W.C. range, ideal for sensitive static pressure monitoring and draft detection.
• Dual Connection Ports: Equipped with 1/4" NPT and 1/8" NPT threads to accommodate standard piping and specialized sensing probes.
• Safety Certified: Carries FM approval, meeting rigorous standards for industrial and commercial furnace safety controls.
• Rugged Reliability: Designed to withstand the high-cycle demands of commercial HVAC equipment and air proving systems.

Common Questions

How do I calibrate the trip point on the 8224210005?
Technicians should use a calibrated manometer and the internal adjustment screw to set the specific inches of water column required for the system's safety parameters.

Can this switch be mounted in any orientation?
For maximum accuracy at low setpoints, it is recommended to mount the A.J. Antunes pressure switch vertically, as horizontal mounting can shift the calibration due to the weight of the diaphragm.

What is the purpose of the SPDT contact in this air switch?
The SPDT (Single Pole Double Throw) contact allows the switch to simultaneously break a circuit to a burner while providing a signal to an alarm or BMS when air pressure drops below the setpoint.

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.