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What should the pressures be for an r22 wi

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Hendoe
Hendoe Member Posts: 1
in THE MAIN WALL
I normally work on residential ac I've never done refrigeration I'm helping out a friend of mine an I would like to kno the pressures for an r22 walk in cooler med temp the suction is at about 70 an high side is at 315 it's really high if someone could help me out I would really appreciate it thanks

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  • Eugene_Silberstein
    Eugene_Silberstein Member Posts: 349
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    Assuming a 40-degree box temperature, the low side pressure for the R-22 system should be approximately 48 psig. The high side pressure will vary depending on a few issues. Is this an air-cooled or a water-cooled condenser? If air cooled, is the condenser located in the basement of the building? If water-cooled and the water entering temperature is 85-degrees (or, if the condenser is air-cooled and located inside) , the high side pressure should be in the range of 210 psig.

    Hope this helps.

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