Emerson Climate Technologies has published an application engineering bulletin for refrigerant retrofits. The bulletin is intended to provide contractors with detailed considerations and procedures for retrofitting Copeland Discus compressors to work with newer, environmentally friendly refrigerants.

Emerson Climate Technologies has published an application engineering bulletin for refrigerant retrofits. This bulletin, “Refrigerant Changeover Guidelines - HCFC R-22 to HFC R-422A/D,” is for Copeland Discus compressors and is part of Emerson Climate Technologies’ ongoing stewardship campaign to promote environmentally responsible refrigerant solutions.

The bulletin is intended to provide contractors with detailed considerations and procedures for retrofitting Copeland Discus compressors to work with newer, environmentally friendly refrigerants. It takes the contractor through the changeover procedure step by step, calling out all individual actions to be taken, ranging from leak testing to labeling system components.

The bulletin also notes special considerations that contractors should take into account before beginning the retrofit process. These include preparatory measures and precautions, additional replacement requirements and a listing of items that the contractors should have before starting the changeover.  

Another key piece to this bulletin is the inclusion of HFC R-422A and R-422D Saturated Vapor/Liquid Pressure/Temperature Charts. These charts will help contractors to compare their testing numbers to industry standards and norms, enabling them to provide more accurate changeover service to their customers.

Those interested in downloading this Application Engineering Bulletin should visitwww.EmersonClimate.com/Refrigerant/refrigerant.htm.