Johnson Controls P352PN-3 Pressure Control

The Johnson Controls P352PN-3 is a professional-grade electronic proportional pressure control designed for precise pressure management in commercial HVACR systems. Operating on 24 VAC power (commonly supplied by a Y350R Power Module), this System 350 component provides high-accuracy monitoring and control with a 90 to 250 psi setpoint range. It features a dual 0 to 10 VDC and 0 to 20 mA analog output, allowing for seamless integration with variable speed drives, actuators, or staged modules. A veteran technician will appreciate the jumper-selectable direct or reverse action and the 10-segment LED bar graph for immediate visual output verification. Housed in a durable NEMA 1 enclosure, the P352PN-3 is functionally identical to the P352PN-3C, ensuring it meets the rigorous demands of condenser fan speed control and compressor unloading applications.

Key Benefits:

• Versatile Output Signals: Simultaneously provides 0-10 VDC and 0-20 mA analog signals to drive multiple downstream devices from a single control point.
• Precision Tuning: Features an adjustable 10 to 100 psi throttling range and selectable integration constants to prevent system hunting and maintain stable head pressure.
• Modular Compatibility: Designed for the Johnson Controls System 350, easily snapping together with S352 stage modules or D352 display modules via 5-pin connectors.
• Field Adaptability: The NEMA 1 enclosure supports both DIN rail and surface mounting, while the RA/DA jumper allows for quick logic changes on-site.
• Calibration Ease: Built-in minimum output adjustment (0-60%) ensures compatibility with various valve and motor actuator ranges.

Common Questions:

Is the P352PN-3 compatible with the P399 pressure transducer?
Yes, this control is specifically designed to work with the P399 series pressure transducers to convert refrigerant pressure into the required DC input signal for the controller.

What is the difference between the P352PN-3 and the P352PN-3C?
Technically, the P352PN-3 and P352PN-3C are identical in specifications, performance, and wiring. The "C" suffix typically denotes a version intended for specific commercial packaging or regional distribution but does not change the technical operation.

Can this control be used for high-pressure safety cutouts?
No. The P352PN-3 is an operating control intended for proportional pressure management. It should not be used as a primary safety limit; independent mechanical high-pressure cutouts must be installed per local codes.

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.