Johnson Controls P352PQ-1 Pressure Control

The Johnson Controls P352PQ-1 is a high-precision electronic proportional plus integral pressure control designed for maintaining accurate static air pressure in commercial HVAC systems. This unit effectively manages a setpoint range of 0.5 to 5 inches W.C., featuring an adjustable throttling range to match specific system requirements. Engineers and technicians utilize this controller to provide a stable 0 to 10 VDC or 0 to 20 mA analog output, ensuring seamless integration with variable frequency drives and dampers. The P352PQ-1 (identical to the P352PQ-1C) employs integral control logic to eliminate offset, delivering high-accuracy pressure regulation compared to standard proportional-only devices. Built with a NEMA 1 enclosure, it supports 24 VAC supply voltage directly or 120/240 VAC via a Y350R transformer. Jumper-selectable direct or reverse action allows for versatile field configuration in various static pressure sensor applications.

• Proportional plus integral control eliminates setpoint drift and provides tighter pressure regulation.
• Supports dual output signals including 0-10 VDC static pressure control and 0-20 mA current loops.
• Field-selectable jumpers allow for quick switching between direct and reverse acting modes.
• Onboard LED indicators provide immediate visual feedback for power and output status during troubleshooting.
• Wide throttling range adjustment ensures compatibility with diverse airflow and ductwork configurations.

How do I wire the P352PQ-1 for 120V power?
Standard operation requires 24 VAC. For 120 VAC or 240 VAC applications, a Johnson Controls Y350R power module must be used to provide the necessary supply voltage.

Is the P352PQ-1 compatible with the P352PQ-1C?
Yes, these units are technically identical and serve as direct replacements for one another in static pressure monitoring systems.

Can this control be used for exhaust fan modulation?
Yes, by utilizing the selectable 0-10 VDC output and jumper settings, it can successfully modulate VFDs on exhaust fans to maintain constant building pressure.

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.