Antunes Controls 8221210003 Pressure Switch

The Antunes Controls 8221210003 is a high-precision differential air pressure switch designed for critical monitoring of positive, vacuum, or differential air pressure in HVACR systems. This SPDT pressure switch features an adjustable set point range of .05" to 1.0" W.C., making it ideal for detecting low-pressure conditions in ductwork or commercial burner applications. Built with 1/8" female NPT connections, it ensures a secure, leak-proof interface with standard pneumatic piping. The electrical configuration handles 15 Amps at 125/250/480 VAC, providing reliable switching for blowers, dampers, and air handlers. Techs often specify the 8221210003 for its robust housing and consistent repeatability in demanding environments. This air pressure sensing switch helps maintain safe airflow thresholds, preventing equipment failure during static pressure fluctuations. Proper installation involves vertical mounting to maintain the factory calibration of the low pressure cutout mechanism.

• Adjustable Range: Precise .05-1"wc tuning allows for fine-grained control in low-flow environments.
• High Electrical Capacity: Rated for up to 480 VAC, suitable for heavy-duty commercial HVAC pressure switch replacements.
• Versatile Ports: Dual 1/8" NPT ports accommodate differential sensing for both positive and negative pressure lines.
• Durable Construction: Engineered to withstand the rigors of industrial mechanical rooms and air processing units.

How do I adjust the set point on the 8221210003?
Remove the cover and use the internal adjustment screw to set the trip point according to the graduated scale; always verify with a calibrated manometer during commissioning.

Can this switch be used for exhaust fan proving?
Yes, this adjustable air differential switch is frequently used to prove airflow in exhaust systems by sensing the pressure drop across the fan.

What is the orientation requirement for installation?
For maximum accuracy at the .05" W.C. threshold, the diaphragm should be mounted in a vertical position to avoid gravitational interference with the set point.

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.