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  1. Thread: Headmaster

    by hvaccop
    Replies
    10
    Views
    1,003

    Headmaster

    Is It 2.5 Lbs Of Refrigerant Per 12,000 Btu Past A Full Sightglass When Charging A System With A Headmaster?
  2. Replies
    14
    Views
    2,106

    TIF ZX-1 Leak detector

    Any Comments on the TIF ZX-1 Leak detector kit. Where can I get one and what kind of price?
  3. Replies
    47
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    3,916

    Rocket is right. Crankcase pressure is pressure...

    Rocket is right. Crankcase pressure is pressure as oil entering pump so that is the correct place to measure not suction service valve. If you have bad blowby you make think oil pressure is fine...
  4. Replies
    4
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    692

    Make sure motors are going right direction and...

    Make sure motors are going right direction and correct rotation on blades. Look at the coil internally real well to make sure evap coil is clean
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    5
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    489

    R-408-a

    R-408-a
  6. Replies
    9
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    1,372

    what is subcooling and superheat with proper...

    what is subcooling and superheat with proper charge? Could be bad TXV or restricted drier if you have high superheat and high subcooling.
  7. where did you get 1.21 tons for that valve. ...

    where did you get 1.21 tons for that valve. normally if its sporlan that valve will be rated at 1 ton for 25 degree coil and maybe 1.25 ton for 45 degree coil.
  8. I really dont understand why you would say use a...

    I really dont understand why you would say use a high temp unit on a 25 degree coil for 35 degree box. More than likely that high temp unit is going to be rated at 45 degree coil. For ex. if you...
  9. the txv capacity is based on coil temp. the same...

    the txv capacity is based on coil temp. the same cartridge for ex. a 1 ton cartridge is 12000 btus at 25 degree coil temp but as the coil temp drops in reduces btus
  10. Thread: Walk in help

    by hvaccop
    Replies
    11
    Views
    1,100

    Ice you hit the nail on the head!!!!!!!!!

    Ice you hit the nail on the head!!!!!!!!!
  11. I know on Sporlan for example a particular TXV...

    I know on Sporlan for example a particular TXV rated at 1 ton is rated for 12000 btus at 20 degree evap and slightly more than that at 40 degree evap. ON the flip side it is less than 12000 on lets...
  12. Replies
    18
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    1,725

    Its not easy but you pour the oil out of the...

    Its not easy but you pour the oil out of the suction line or process tube into a container and measure the same amount you took out and pour you new oil in the compressor. You can use Hot Shot with...
  13. Replies
    18
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    1,725

    Same here. I guess it is because POE oil really...

    Same here. I guess it is because POE oil really cleans the insides of the copper pipes so any trash or anything for that matter will circulate and could possibly cause a restriction versus other...
  14. Replies
    18
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    1,725

    What happens is the oil gets so hot from an...

    What happens is the oil gets so hot from an extremely dirty condensor. It actually breaks down and loses its lubricating ability. It is of course pumped through the system with refrigerant. Now...
  15. Replies
    18
    Views
    1,725

    If the condensor gets dirty it will boil the oil...

    If the condensor gets dirty it will boil the oil and thus stop up captube. Seen it many times.
  16. Replies
    14
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    799

    The reversing valve doesnt deenergize everytime...

    The reversing valve doesnt deenergize everytime the stat satisfies. It stays energized as long as the stat is in the cooling mode whether actively running or not.
  17. Replies
    18
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    1,612

    In other words if I have lets say a return flex...

    In other words if I have lets say a return flex undersized or full of water or the filter is stopped up I will have a high static on my return side but a low static on my supply side?
    Another...
  18. Replies
    18
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    1,612

    Is ESP the same as TSP?

    Is ESP the same as TSP?
  19. Replies
    18
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    1,612

    In that particular thread is that a pitot tube or...

    In that particular thread is that a pitot tube or a static pressure tip because it talks about a pitot tube but the then you are talking about measuring static pressure. A little confused
  20. Replies
    18
    Views
    1,612

    Thanks for the clarification. I wasnt sure if a...

    Thanks for the clarification. I wasnt sure if a static pressure tip was the same as a pilot tube or not. I am in the same boat you are. I am trying to learn static pressure and trying to...
  21. Replies
    18
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    1,612

    what are the tubes with the magnets on it that...

    what are the tubes with the magnets on it that insert into the duct? One in the supply and one in the return?
  22. Replies
    18
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    1,612

    I am assuming the static pressure tip is separate...

    I am assuming the static pressure tip is separate from pilot tube. I saw in grainger where they had 2 static tips and 1 pilot tube included. Can you just switch the tips out on pilot tubing?
  23. Replies
    18
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    1,612

    Does dwyer have static pressure probes?

    Does dwyer have static pressure probes?
  24. Replies
    18
    Views
    1,612

    Airflow Instrumentation

    Where can I get the proper instrumentation to measuring static pressure such as airflow across on air handler or gas furnace? What exactly do I need to get?
  25. Thread: low on gas

    by hvaccop
    Replies
    3
    Views
    655

    What refrigerant was it on? Nameplates arent...

    What refrigerant was it on? Nameplates arent always right
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