The state of NY is removing its code requirements for Ammonia Refrigeration processes and simply requiring the use of IIAR standards…
1101.1.1 Refrigerants other than ammonia.
Refrigeration systems using a refrigerant other than ammonia, shall comply with this chapter, ASHRAE 15, and the International Fire Code. Refrigeration systems containing carbon dioxide as the refrigerant shall also comply with ANSI/IIAR CO2.
1101.1.2 Ammonia refrigerant.
Refrigeration systems using ammonia as the refrigerant shall comply with IIAR 2 for system design, IIAR 3 for valves, IIAR 4 for installation, IIAR 5 for start-up, and IIAR 6 and shall not be required to comply with this chapter.
1101.7 Changing Refrigerant.
Changes of refrigerant in an existing system to a refrigerant with a different refrigerant designation shall only be allowed where in accordance with the following:
1. The owner or the owner’s authorized agent shall be notified prior to making a change of refrigerant, and the change of refrigerant shall not be made where the owner objects to the change. The change in refrigerant shall be in accordance with one of the following.
1.1 Written instructions of the original equipment manufacturer.
1.2 An evaluation of the system by a registered design professional or by an approved agency that validates safety and suitability of the replacement refrigerant.
1.3 Approved by the code official.
2. Where the replacement refrigerant is classified into the same safety group, requirements that were applicable to the existing system shall continue to apply.
3. Where the replacement refrigerant is classified into a different safety group, the system shall comply with the requirements of this standard for a new installation, and the change of refrigerant shall require code official approval.
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