Carrier NASA401LA Low Ambient Kit Outdoor Unit

Product Description

The CARRIER NASA401LA is a low ambient kit designed to protect outdoor condensing units during cold-climate operation. The kit includes a low-ambient pressure switch, mounting bracket, wiring leads, and installation hardware, providing a complete solution for configuring an HVAC system for reliable low-temperature performance. Licensed HVAC technicians install this kit to prevent nuisance low-pressure trips during startup when outdoor ambient temperatures drop below normal operating ranges. It is engineered for use with R-410A refrigerant systems equipped with PSC motors or compatible configurations.

This kit is suited for residential and light commercial HVAC applications where outdoor units must operate reliably in cold-weather climates. Installation is appropriate when a system experiences low-pressure lockouts during winter startup or when the equipment is sited in a region with extended cold seasons. The included hardware supports a straightforward field installation without the need for additional parts.

Key Features

• Complete kit includes low-ambient pressure switch, mounting bracket, wiring leads, and installation hardware
• Prevents nuisance low-pressure trips during cold-weather startup
• Compatible with R-410A refrigerant systems
• Designed for use with PSC motor-equipped outdoor units
• Supports dependable outdoor unit operation in low ambient temperature conditions

Compatibility

Designed for R-410A systems with PSC motors or compatible outdoor condensing units requiring low ambient protection. Refer to the equipment documentation or CARRIER product compatibility guides to confirm fitment for a specific unit model.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out power to the outdoor unit before beginning any wiring work. Follow all applicable local codes and manufacturer wiring diagrams when connecting the pressure switch and leads. Do not energize the system until all connections are secure and the mounting hardware is fully tightened.

Technical Specifications

• Refrigerant Type: R-410A
• Motor Compatibility: PSC
• Kit Contents: Low-ambient pressure switch, mounting bracket, wiring leads, installation hardware

Standard Information

• Brand: CARRIER
• Manufacturer Part Number: NASA401LA