Rcd p251-0083h Head Pressure Low Ambient Control Kit

Product Description

The RCD p251-0083h is a head pressure and low ambient control kit designed for use in residential and light commercial air conditioning and heat pump systems. This control kit regulates head pressure under low ambient temperature conditions, allowing the system to operate reliably when outdoor temperatures drop. It is installed by licensed HVAC technicians as part of routine service or system upgrades. Key physical dimensions are 6.95 inches long, 5.45 inches wide, and 2.7 inches tall, making it a compact, panel-mountable assembly suited to condensing unit applications.

This control kit is applied in split-system air conditioners and heat pumps where low ambient operation is required. Low ambient controls prevent head pressure from dropping too far during cold-weather operation, protecting the refrigerant circuit and maintaining consistent performance. The kit is appropriate for rooftop and ground-mounted condensing units that cycle in shoulder-season or year-round cooling applications. Compatible models listed in the input include 38TG 048 500, 38CKX048 910, and 38CKB036 300.

Key Features

• Regulates head pressure during low ambient outdoor conditions to maintain system operation
• OEM-style replacement kit engineered to factory specifications
• Compact form factor at 6.95 inches x 5.45 inches x 2.7 inches for easy installation in condensing unit panels
• Suitable for both air conditioning and heat pump condensing units
• Supports reliable cold-weather and shoulder-season system performance

Compatibility

Compatible models include 38TG 048 500, 38CKX048 910, and 38CKB036 300. Verify the full model and serial number against the original equipment documentation before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the condensing unit before beginning work. Follow the equipment manufacturer's wiring diagram and applicable local codes when connecting the control kit. Do not energize the system until all connections have been inspected and covers are secured.

Technical Specifications

• Length: 6.95 inches
• Width: 5.45 inches
• Height: 2.7 inches

Standard Information

• Brand: RCD
• Manufacturer Part Number: p251-0083h