![]() ![]() REFRIGERANT PRESSURE / TEMPERATURE CHARTS for R-22, R-410A, R-134A, R-404A REFRIGERANTS Īdvantage Engineering, Inc.R22 PRESSURE-TEMPERATURE CHART iGas, 8105 Anderson Road, Tampa, FL 33634 USA, a supplier of refrigerant gases, Web: Tel: 81 gives pressure and temperatures in both F & C for R22 from -49☏ (-5.4 psig) up to 150☏ (381.7 psig) - these are Saturation Pressure-Temperature Data for R22 (psig)*.R-22 Refrigerant Pressure / Temperature Chart & Table Downloads Measure the suction line temperature neaer its entry to the compressor/condenser unit. R-22 Superheat & Sub-Cooling Temperature Range= 8 - 18☏.Table pressure: R-22 High-Side pressure = 150-175 psigĬalculated pressure: R-22 High-Side pressure = (75 x 2) + 50 = 200 psig - you should take this as an upper limit. OPINION: this rule of thumb gives pressures a bit higher than shown in our R-22 pressure and temperature table above. R-22 High-Side pressure = 2 x ambient temperature (F) + 50 psi.So at 80☏ return air temperature, the suction line temperature would be between 40☏ and 45☏ Refrigerant Low-Side Suction Line Temperature: 35-40 ☏ below the building's return air temperature measured at the air handler.Įxample: temperature at the return air entry to the air handler = 80☏.Ĭalculate the evaporation temperature = suction line temperature range: (80☏ - 35☏ = 45☏) - (80☏ - 40☏ = 40☏).Other sources give the low side pressure range = 60 - 80 psig. Varies by indoor wet bulb temperature and outdoor ambient temperature, where higher heat loads increase the vapor line pressure. R-22 Low-Side Typical Operating Pressure-Range = 58 - 85 psig.R-22 Low-Side Turn-On Pressure = 50 psig (R22 at 30 deg F) is a typical pressure at which the HVACR compressor/condenser will turn-onġ00 psig (R 22 at 85 deg F) is a typical pressure at which the HVACR compressor will turn off.R-22 Low-Side pressure when compressor is OFF = 30 psi at 90☏ ambient temperature, system OFF. ![]() Prah, Frank, CMS, "Refrigerant 410A", Refrigeration Service Engineers Society, 1666 Rand Road, Des Plaines IL 60016 USA, Tel: 84, retrieved 9, original source: Low pressure refrigerant switches on Carrier HVACR typically open at 50 psi and close at 100 psi. On a properly-charged and working air conditioning system using R-22 refrigerant R22 Refrigerant Pressure Rules of Thumb Typical Off, Low, High side R22 Pressures & Temperatures
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