scope:

This guideline applies to all Service Ports for use with Class A2L, B2L, A2 and A3 refrigerants per the classifications outlined in ANSI/ASHRAE Standard 34. The guideline applies to air-conditioning and commercial refrigeration equipment, such as chillers and unitary equipment, and all refrigerant handling Containers, such as refrigerant cylinders and tanks used for service and commissioning.

Purpose.

This guideline establishes recommendations of good practice for the design and application of unique Fittings for all refrigerant handling Containers and Service Ports for air-conditioning and commercial refrigeration equipment. The purpose of the guideline is to prevent equipment using non-flammable refrigerant from being contaminated with flammable refrigerant and vice versa. This document is not intended to be an exhaustive listing of all such recommendations. Applicable federal, state, and local requirements should be reviewed.

Intent.

This guideline is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors, and users.

Review and Amendment.

This guideline is subject to review and amendment as technology advances.