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  1. Thread: Headmaster

    by hvaccop
    Replies
    10
    Views
    1,133

    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
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    2,439

    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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    4,390

    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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    804

    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
  5. Replies
    5
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    642

    R-408-a

    R-408-a
  6. Replies
    9
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    1,633

    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
    1,404

    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
    Views
    2,163

    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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    2,163

    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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    2,163

    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
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    2,163

    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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    1,066

    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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    2,118

    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
    Views
    2,118

    Is ESP the same as TSP?

    Is ESP the same as TSP?
  19. Replies
    18
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    2,118

    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
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    2,118

    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
    Views
    2,118

    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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    2,118

    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
    Views
    2,118

    Does dwyer have static pressure probes?

    Does dwyer have static pressure probes?
  24. Replies
    18
    Views
    2,118

    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
    731

    What refrigerant was it on? Nameplates arent...

    What refrigerant was it on? Nameplates arent always right
  26. Call a Goodman wholesaler or manufacturer

    Call a Goodman wholesaler or manufacturer
  27. Replies
    24
    Views
    1,963

    distributor nozzles, aka orifices, will be found...

    distributor nozzles, aka orifices, will be found on larger coils to distribute ref. evenly since the coil has so much tubing.
  28. Replies
    13
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    1,234

    I totally agree with you. At least 65 out, I...

    I totally agree with you. At least 65 out, I like 70 or 75 out and a decent load. My ex boss would cycle cond fan and at 250 he wanted 65-70 on suc if not he wanted to add gas. I have tried cycling...
  29. Replies
    13
    Views
    1,234

    OOPs I meant 125 degrees not psi

    OOPs I meant 125 degrees not psi
  30. Replies
    19
    Views
    1,573

    You hit the nail on the head. Condensor was...

    You hit the nail on the head. Condensor was extremely dirty burnt up compressor, boiled POE oil and clogged cap tube. Replace compressor and here we are today with a stopped up captube. See it all...
  31. Replies
    13
    Views
    1,234

    Even blocking off condensor to a 125 psi is not...

    Even blocking off condensor to a 125 psi is not necessarily going to produce a 70 psi suc on r-22. If its lower than that you have to add a gas is not the case. Take d_griff advise and be very...
  32. Replies
    16
    Views
    3,804

    Never changed oil in residentail sealed hermetic...

    Never changed oil in residentail sealed hermetic but in refrigeration units especially POE oil several times.
  33. Replies
    12
    Views
    1,198

    8045-20 or 8141-20

    8045-20 or 8141-20
  34. Replies
    12
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    1,198

    00- 120v 20- 240v 8045- time initiate and time...

    00- 120v
    20- 240v
    8045- time initiate and time terminate, 1 nc contact and 1 no contact
    8145 - time initiate and temp/pressure terminate, 1 nc and 1no
    8141- time intitate and temp/pressure...
  35. Replies
    17
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    1,712

    How many returns do you have in your house. The...

    How many returns do you have in your house. The air handler may be starving for air because of a partially collapsed return.
  36. Replies
    16
    Views
    3,804

    turn the compressor upside down and pour oil out...

    turn the compressor upside down and pour oil out of the suction line or process tube. Get compressor info from supply house and see what type of oil and the amount needed to go back. better yet,...
  37. Replies
    2
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    824

    Measuring CFM and Velocity

    Who makes the best instrumentation for measuring cfm and fpm that is accurate? I was reading some info on testo. Any ideas?
  38. Replies
    4
    Views
    745

    Check and make sure you dont have a partially...

    Check and make sure you dont have a partially crimped return or a double filters system
  39. Replies
    12
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    912

    I believe he meant very cold Is the compressor...

    I believe he meant very cold
    Is the compressor hot when its running?
  40. Replies
    25
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    3,084

    Personally I believe the yellow jacket is the...

    Personally I believe the yellow jacket is the best pump. It is heavy, but very durable and built very well. I have the 6 cfm pump and it sells around here for about 280 or 290. If we are talking...
  41. Replies
    19
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    2,234

    The yellow jacket does good on 400 series but its...

    The yellow jacket does good on 400 series but its not near as sensitive on 22. One of my service guys has one and its not near as sensitive as D-tek
  42. Replies
    17
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    2,032

    Alittle jumbled can you be alittle more clear....

    Alittle jumbled can you be alittle more clear. When you say in cool mode, No indoor fan and no 24 volt, is your tstat calling or just system switch in cool?
  43. Thread: Psychrometer

    by hvaccop
    Replies
    14
    Views
    1,385

    What kind of price?

    What kind of price?
  44. Replies
    19
    Views
    2,234

    I have been using the D-tek for 6 years. I had a...

    I have been using the D-tek for 6 years. I had a guy give me his D-tek(5 years old) because he said it was going bad. He was going to throw it away. Replaced the batteries and it works like a...
  45. Thread: Psychrometer

    by hvaccop
    Replies
    14
    Views
    1,385

    Psychrometer

    Any suggestions on Digital Sling Psychrometer? Accurate
  46. Replies
    15
    Views
    1,183

    If The Pressure Switch Fails In Will Lock Out In...

    If The Pressure Switch Fails In Will Lock Out
    In Other Words The Combustion Fan Motor Cannot Pull A Negative Pressure Or Enough Of One If The Drain Stops Up, Is Running Up Hill, The Vent Pipe Has A...
  47. Replies
    15
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    1,183

    EASY BROTHER MAN

    EASY BROTHER MAN
  48. Replies
    15
    Views
    1,183

    I Work On A Whole Lot Of Intercity (heil) 90+...

    I Work On A Whole Lot Of Intercity (heil) 90+
    Most Likely Not Draining Causing Erratic Pressure Switch Problems
    Need To Have Professional Look At It. Probably Simple Fix
    Is The Vent Pipe The...
  49. Replies
    218
    Views
    13,901

    Most definitely going to have to be replaced. ...

    Most definitely going to have to be replaced. Dry location material only. Wont flush in NC or anywhere else for that matter. How long has this electrician been in business?
  50. Replies
    6
    Views
    918

    Refrigerant type, SH, SC, Ambient Temp

    Refrigerant type, SH, SC, Ambient Temp
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