Admin What is normal low side pressure for R-22?
R22 gauge pressure is 10.9 bar or 158.2 psi. High side pressure typically varies by equipment and metering controls. Low pressure or suction side typically varies by equipment. Low-pressure refrigerant turns on the carrier HVACR at 50 psi (R22 pressure at 30 degrees) and closes at 100 psi (R22 pressure at 85 degrees).
What are the normal operating pressures for R-22?
| Comparison of Refrigerant Pressures at 30°C / 86°F Ambient Temperature | ||
|---|---|---|
| Refrigerant Gas | Gauge Pressure – BAR | Gauge Pressure – PSIG |
| R22 | 10.9 | 158.2 |
| R32 | 18.26 | 264.80 |
| R134A | 6.69 | 96.00 |
What should the high and low side pressures be for R-410A?
A normally operating R-410A system with the same condensation temperature of 120 degrees and a 45 degree evaporator saturation temperature will have a high side pressure of 418 psig and a low side pressure of 130 psig.
How do you read R22 on a temperature gauge?
Add 15 to 25 degrees F to the outdoor temperature (say 90+15=105 and 90+ 25=115) and look at the TEMPERATURE information for R-22 on the gauge (green ring of numbers). THE HIGH SIDE NEEDLE SHOULD POINT TO A TEMPERATURE BETWEEN 105 AND 115 (in the green ring of numbers) AND THE PRESSURE IS READ ON THE BLACK RING OF NUMBERS FOR PRESSURE.
What should the evaporating temperature of R-22 be?
IF the return temperature is 75 the evaporating temperature of the R-22 should be between (75-40=35) and (75-35=40). THE LOW SIDE NEEDLE SHOULD POINT BETWEEN 35 AND 40 DEGREES (in the green ring of numbers) FOR R-22 AND THE PRESSURE IS READ WHERE THE NEEDLE POINTS ON THE BLACK RING OF NUMBERS FOR PRESSURE.
What should the high and low side pressures be for R22?
What should the high and low side pressures be for r22? High side reads about 250 give or take at 90 degrees ambient temperature. Low side reads 43. Using farthest outside scale on gauge. generally it should be around 225 on the high side and near 70 on the low.
Is R-22 Freon a dying refrigerant?
As I write this article, in 2019, there are still thousands of R-22 machines out there, but they are a dying breed and within the next ten to twenty years R-22 will be as rare to find as R-12 is today. If you would like to read more about R-22 Freon refrigerant please click here to be taken to our refrigerant fact sheet.