P70AA-2C Johnson Controls Pressure Control

Overview

The Johnson Controls P70AA-2C is a high-performance electromechanical low pressure control designed primarily for commercial refrigeration and air conditioning applications. It functions as a low pressure cut-out, pump-down, or capacity control to protect systems against low pressure conditions. Featuring an automatic reset mechanism, this control provides stable operation with high-pressure HFC refrigerants as well as non-corrosive fluids.

Features

• Sight-Set Calibrated Adjustment: Displays a visible pressure scale for fast, accurate settings through the range without removing the cover.
• Rugged All-Steel Enclosure: Built with a heavy-duty NEMA 1 steel case and cover that offers long-lasting protection for internal components.
• Secure Switch Action: Utilizes a Single-Pole Single-Throw (SPST) Open Low switch action configuration.
• Flexible Connection Style: Equipped with a 36-inch capillary and a 1/4-inch flare nut for versatile mounting options.

Specifications

• Brand: Johnson Controls
• Model Number: P70AA-2C
• Operating Pressure Range: 0 to 150 PSIG (0 to 1034 kPa)
• Differential Pressure Range: 10 to 70 PSIG (69 to 483 kPa)
• Switch Configuration: SPST (Open Low)
• Pressure Connection: 36-inch Capillary with 1/4-inch Flare Nut
• Maximum Working Pressure: 325 PSIG (2241 kPa)
• Enclosure Rating: NEMA 1 (Steel Case)

Applications

• Commercial Refrigeration: Typically used for low pressure cut-out control, pump-down monitoring, and protecting compressor systems from low charge.
• Air Conditioning Systems: Serves as a condenser fan cycling control or safety cut-out control in commercial cooling setups.
• Non-Corrosive Fluids: Suitable for use across various non-corrosive fluid applications that require robust electromechanical pressure regulation.