P70DA-1C Johnson Controls Pressure Control

Overview

The Johnson Controls P70DA-1C is a high-performance pressure control designed primarily for high-pressure cutout control, head-pressure control, and condenser fan cycling control in commercial refrigeration and air conditioning applications. It features a manual reset lockout mechanism, which provides trip-free safety shutdown that cannot be overridden or reset until the system pressure returns to a safe, specified level. This control is compatible with most common non-corrosive refrigerants.

Features

• All-steel case and cover provide rugged, long-lasting protection for internal components.
• Sight-Set calibrated pressure adjustment displays a visible scale for straightforward, precise adjustment without removing the cover.
• Manual reset lockout mechanism ensures trip-free safety control by preventing automatic system restarts.
• Generous 36-inch capillary tube with a 1/4-inch flare nut allows flexible mounting and installation options.

Specifications

• Pressure Range: 50 to 500 PSIG (345 to 3448 kPa)
• Differential: 35 to 200 PSIG maximum differential
• Maximum Working Pressure: 525 PSIG (3620 kPa)
• Switch Action: SPST (Single-Pole Single-Throw) Open High
• Electrical Rating: 120 to 240 VAC, 1 Phase (2 hp at 120 VAC, 3 hp at 240 VAC)
• Enclosure: NEMA 1 standard steel housing
• Connection Type: 1/4 inch nominal flare nut on a 36-inch capillary tube

Applications

• High-pressure safety cutout control in commercial HVAC systems
• Head-pressure control for refrigeration units
• Condenser fan cycling control to optimize system efficiency
• Non-corrosive fluid pressure monitoring applications requiring manual reset protection