Enviro-tec PC-03-0001 Pressure Switch

The Enviro-tec PC-03-0001 is a normally open (N/O) fixed air pressure switch engineered for precision monitoring within VAV terminals, fan coils, and commercial air-handling systems. This genuine OEM replacement is calibrated at a 0.05" WC (water column) set point, ensuring the circuit closes only when sufficient static pressure is detected to safely initiate HVAC system sequences. Built with a robust housing to withstand typical mechanical room vibrations, this 0.05" WC pressure switch effectively prevents inducer motor failure or exhaust blockages from compromising equipment operation.

This fixed set point switch operates on a 24V AC circuit with a 1.5 amp rating, making it a drop-in HVAC replacement part for existing Enviro-tec control configurations. Technicians can rely on the integrated mounting bracket and tubing ports for rapid installation in the field. By maintaining the correct air pressure sensing thresholds, this component protects the unit from short-cycling or ignition failure caused by inadequate airflow. Use this HVAC safety switch to ensure your blower coil units and air handlers meet original factory specifications for both safety and performance.

• Fixed Calibration: Factory-set at 0.05" WC for consistent, reliable performance without the need for field adjustment.
• OEM Compatibility: Specifically designed for Enviro-tec VAV terminals and fan coil units to ensure seamless integration.
• Safety Monitoring: Prevents system operation under hazardous conditions like blocked vents or fan motor failure.
• Durable Construction: Engineered to hold tight tolerances in demanding commercial HVAC environments.

How do I verify if the PC-03-0001 is functioning?
With the system calling for a start, use a manometer to verify the pressure at the sensing port meets the 0.05" WC threshold. You should hear an audible click as the normally open contacts close, or you can use a multimeter to check for continuity across the terminals.

What causes a "pressure switch stuck open" error with this part?
Common culprits include cracked or disconnected pressure tubing, a restricted flue, or a failing draft inducer that isn't pulling enough vacuum to trip the 0.05" WC set point.

Can I use this switch in 120V applications?
While the physical switch body may be robust, this specific Enviro-tec switch is typically rated for 24V AC control circuits. Always verify your specific wiring diagram before installation.

This item is not eligible for free shipping.

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.