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Type: Posts; User: Bergen D

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  1. Replies
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    Will return to site and check. I know bulb is...

    Will return to site and check. I know bulb is making good contact because I removed bulb and heater up to check txv operation. Thanks for the help. Will check back in
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    1,851

    Checked pressures again after box dropped from 35...

    Checked pressures again after box dropped from 35 degrees to 10 degrees after running for a few... 23 psi suction, 225psi head pressure. 20 degree super heat at evap coil. Total system...
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    Sporlan head pressure control valve LAC 4 215...

    Sporlan head pressure control valve
    LAC 4 215
    Also found a heat exchanger about 10' from rooftop condensing unit heating up suction line with liquid line between indoor and outdoor units
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    15
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    1,851

    404a pressures in low

    I have a r-404a roof-top condensing serving a walk in freezer. pressures are 235 psi head pressure and a 28psi suction pressure. Outdoor ambient is 30degress and indoor box temperature is about...
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    1,647

    fieldpiece fuse

    I have a fieldpiece HS36 and went thru a couple of fuses thru the years. Remove the battery and remove all the small phillips head screws on the back of the meter. The case pulls apart and you will...
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    added crankcase heaters, low ambient fan...

    added crankcase heaters, low ambient fan controls, bypass timers, hi-lo pressure switches, time delays, the works. After one month of use both the ncps and aerosys systems rattle like they are...
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    530

    New York City splits

    hvac contractor working in Nyc, mostly between 5th ave and park ave $$$$. Have found almost all equipment to be National Comfort products or Aerosys thru wall condensing systems. Compressers short...
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