• R-422D is a great replacement for R-22 and comes in a 25 pound cylinder... can readily retrofit many existing air conditioning systems to Genetron® 422D.
• A long-term non-ozone depleting replacement for R-22 in low- and medium-temperature commercial refrigeration systems. Suitable for direct expansion evaporators. Do not use in systems that employ flooded evaporators. For new equipment and retrofits.
GENERAL INFORMATION
Refrigerant Class - Blend
Contains - HFC-125 65.1%, HFC-134a 31.5%, HC-600a 3.4%
Brand - Genetron®
Glide - Moderate
ASHRAE Number - R-422D
Substitutes - HCFC-22
Chemical Name - Pentafluoroethane, Tetrafluoroethane, Isobutane
Application - Commercial A/C, Commercial Refrigeration, Residential A/C, Retrofit
Typical Lubricant - Mineral Oil
Refrigerant Type - HFC
Replaces - R-22
PHYSICAL PROPERTIES
Saturated Liquid Density - 70.87 lb/ft3 at 86 °F
Specific Heat of Liquid - 0.35 Btu/lb at 86 °F
Molecular Weight - 109.9 lbm/lbmol
Specific Heat of Vapor - .2 Btu/lb at 86 °F and 1 Atm, at Cp
Critical Pressure - 566.22 psia
TEMPERATURE
Critical Temperature - 175.2 °F ASTM D-1321
Boiling Point/Range - -45.76 °F at 1 Atm
SAFETY & ENVIRONMENT
Flammable Range - None, %vol. in air Based on ASHRAE Standard 34 with Match Ignition
STANDARDS & APPROVALS
ASHRAE Safety Classification - A1
Other Notes
Lower capacity. Can replace HCFC-22 in many cases without having to change compressor lubricant. May be used with alkylbenzene, mineral oil and POE lubricants. If inadequate oil return is observed for AB addition of POE may be needed. Genetron 422D can, in most cases, be used with existing HCFC-22 thermostatic expansion valves.Larger valves may be needed in cases where the R-22 valve is near its maximum capacity. Lower discharge temperature than HCFC-22, which may extend compressor longevity.
