Iiar Ammonia Refrigeration Piping Handbook Pdf Link May 2026

– Lists acceptable pipe materials (e.g., ASTM A53 Grade B, seamless only above 6 inches). Forbids copper, brass, or galvanized steel due to corrosion.

A: Possibly, but not for a new installation requiring a permit. Most AHJs (Authorities Having Jurisdiction) require the current edition (2021 as of this writing). The 2008 edition lacks requirements for secondary containment and updated seismic bracing. iiar ammonia refrigeration piping handbook pdf link

– Details the difference between strength tests (1.5x design pressure) and tightness tests (using dry nitrogen or helium). – Lists acceptable pipe materials (e