Search:

Type: Posts; User: Saturatedpsi

Page 1 of 20 1 2 3 4

Search: Search took 0.05 seconds.

  1. You figured it out but all the numbers pointed to...

    You figured it out but all the numbers pointed to undercharge. 210 psi is 105˚ saturated and for "old" equipment (10 SEER?) the condensing temp would be OD + 20 or more. And assuming the indoor coil...
  2. Replies
    101
    Views
    2,503

    I buy a particular aftermarket, multi-hp fan...

    I buy a particular aftermarket, multi-hp fan motor that says use a 5 F cap, then says you can use a 7.5 F for a more 'powerful' motor...and that might be with a higher hp application. But going...
  3. Replies
    12
    Views
    486

    That's the answer to your question...the...

    That's the answer to your question...the particular specs for a particular equipment match, determine what metering is necessary to make the SEER rating. I don't doubt 13-14 SEER could be attained...
  4. The irony for me is the fact in my 30 years of...

    The irony for me is the fact in my 30 years of doing HVAC, I think two customers asked if I was credentialed...maybe they all take for granted I am.
  5. I never said I disagree with legal requirements,...

    I never said I disagree with legal requirements, just that I'm not concerned with illegal contractors.
  6. Your ***** is with the AZ enforcement...

    Your ***** is with the AZ enforcement entity...and the fact they are somewhat lax is atypical. We can assume you've *****ed at them?
  7. I agree with that 100%... My State...

    I agree with that 100%...

    My State certification/enforcement board sends an annual communication to remind me of the upcoming certification fee due date and report the number of uncertified...
  8. Replies
    44
    Views
    1,731

    I'm kinda' strange, myself...:o ..but agree he'll...

    I'm kinda' strange, myself...:o ..but agree he'll get less grief in the Pro forum. :grin2:
  9. Replies
    44
    Views
    1,731

    Anybody that comes up with the amount of info he...

    Anybody that comes up with the amount of info he posted, isn't a DIY...there are members in the Pro forum who post less information. And the rules are vague...how far, is too far? If someone posts a...
  10. Replies
    44
    Views
    1,731

    If the system contained a significant amount of...

    If the system contained a significant amount of nitrogen, he wouldn't have gotten the numbers he posted.
  11. Replies
    44
    Views
    1,731

    His opening sentence establishes his level of...

    His opening sentence establishes his level of experience and credentials...
  12. Replies
    44
    Views
    1,731

    3.5˚ superheat with a TXV indicates the valve is...

    3.5˚ superheat with a TXV indicates the valve is overfeeding, which could be due to the different P-T relationships of 22 and 407C, which is 3.5˚. At 75 psi, the valve is "seeing" a 22 saturated...
  13. Replies
    20
    Views
    1,117

    I never cared for the putty stuff but I like the...

    I never cared for the putty stuff but I like the spray on gel, particularly for service valves and TXVs. For me and my sloppy brazing technique, I can get better protection. And it cleans up a lot...
  14. Replies
    23
    Views
    939

    Over the the years with heat pumps, I've seen a...

    Over the the years with heat pumps, I've seen a bunch of "open commons" on the stat cable...and I never understood why the common conductors fail but oftentimes there is an unused conductor available...
  15. I had an old Trane 5 ton gas/electric RTU with a...

    I had an old Trane 5 ton gas/electric RTU with a high condenser pressure differential...never did the surgery on it so will be very interested in seeing what you find. :yes:
  16. Replies
    16
    Views
    991

    I like Fluke...for me, it's been a...

    I like Fluke...for me, it's been a get-what-you-pay-for experience. Got a 16 that has to be 25-30 years old and it still works. I have 3 or 4 T5's laying around and they all work. I just keep...
  17. Replies
    42
    Views
    1,755

    Good possibility...some kind of restriction when...

    Good possibility...some kind of restriction when the suction drops immediately.
  18. Replies
    15
    Views
    1,380

    Yeah, they look more "professional" for permanent...

    Yeah, they look more "professional" for permanent splice applications...
  19. Replies
    15
    Views
    1,380

    That's a good explanation... I was hung up on...

    That's a good explanation...

    I was hung up on "maretts" being wire nuts...:grin2: ..never seen the term. Finally found the relationship: Marrette - a brand name, right?

    Marrette Wire Connectors
  20. Replies
    45
    Views
    1,856

    Ditto... Goodman expanded data for the ASPT31...

    Ditto...

    Goodman expanded data for the ASPT31 match shows 153 psi suction at AHRI rating conditions...lots of luck with that. :grin2:
  21. Replies
    45
    Views
    1,856

    I was thinking earlier there was already a TXV on...

    I was thinking earlier there was already a TXV on the ID coil...another whoops.

    But then he could get the 18˚ subcooling down to 6 or 7 and maybe get acceptable operation. I've hooked 14 SEER...
  22. Replies
    45
    Views
    1,856

    OK, I missed the ARUF31 somewhere...:o The...

    OK, I missed the ARUF31 somewhere...:o The incorrect match could, and probably does, account for the high side numbers, with the factory charge.

    The difference in our approaches to analysis is me...
  23. Replies
    45
    Views
    1,856

    That comment is revealing but I still think the...

    That comment is revealing but I still think the system is overcharged. The tech data I've seen recommends both superheat and subcooling 7˚ - 9˚ and some expanded data I have shows 250 psi for the...
  24. Replies
    45
    Views
    1,856

    My heat pump heat cycle operation under similar...

    My heat pump heat cycle operation under similar OD/ID conditions a few minutes ago...after 15 minutes, numbers stable. I don't doubt some heat pumps would churn with moderate ID/OD temps but a lot of...
  25. Replies
    45
    Views
    1,856

    System's been running two years...wouldn't that...

    System's been running two years...wouldn't that eliminate indoor coil issues?
  26. Replies
    45
    Views
    1,856

    You got any idea how they get 16 with a single...

    You got any idea how they get 16 with a single stage?
  27. Replies
    45
    Views
    1,856

    180 psi in heat at 68˚ OD is crazy high...that's...

    180 psi in heat at 68˚ OD is crazy high...that's 63˚ saturated...is the OD TXV sensing bulb mounted on the correct tube? I'm just thinking if it's on a hot gas line, the sensing bulb pressure will...
  28. Replies
    8
    Views
    572

    The relevant "quirks" are (usually) undersized...

    The relevant "quirks" are (usually) undersized duct, requiring "high" static blowers (0.7+) and "A" coil geometry. I'm guessing the furnace sits on the coil "box" so a mobile home specific coil will...
  29. Replies
    8
    Views
    435

    :grin2:

    :grin2:
  30. Replies
    44
    Views
    1,284

    It's very typical for electric furnace...

    It's very typical for electric furnace applications, on older homes...I've seen cased coils installed, actually installed one myself. But if you buy a "mobile home" "A" coil, it will likely be...
  31. Replies
    27
    Views
    1,463

    I can never remember what I've seen but I think a...

    I can never remember what I've seen but I think a frosting TXV valve body indicates funky valve internals.

    Frosting distributor lines would suggest low charge and maybe underfeeding valve; a...
  32. Replies
    27
    Views
    1,463

    I couldn't figure out the flow direction till you...

    I couldn't figure out the flow direction till you posted the outdoor coil pic...:grin2:

    I've had the best luck sizing pics at 600 max...you could probably tweak that a bit.
  33. Replies
    27
    Views
    1,463

    I vote faulty outdoor TXV...:.02:

    I vote faulty outdoor TXV...:.02:
  34. I don't think I understand the question...

    I don't think I understand the question fully...you want a single formula to check any refrigerant pressure? relative to what? Saturated conditions, equipment design operating coil temps?
  35. And the tools were never intended to teach the...

    And the tools were never intended to teach the user the principles behind vapor compression refrigeration...you got to know what the system is supposed to be doing before ever connecting the tool.
  36. Replies
    2
    Views
    343

    An R-12 AC system would run 37 psig suction to...

    An R-12 AC system would run 37 psig suction to get a 40˚ evaporator temp...of course, R-22 systems run 70 psig to get 40˚ coils.
  37. Replies
    2
    Views
    343

    That is confusing or at least the choice of...

    That is confusing or at least the choice of wording. "Low pressure" refrigerants have higher boiling point temperatures than "high pressure" refrigerants, at standard atmospheric pressure (0 psig).
    ...
  38. Replies
    20
    Views
    1,081

    Did you check operating pressures or haven't been...

    Did you check operating pressures or haven't been there yet?

    System pressures run lower at night, probably more defrosts cycles at night...could be sticking in defrost too long. But 2 zones adds a...
  39. Right...but he said somewhere the discharge (hot...

    Right...but he said somewhere the discharge (hot gas) line wasn't hot or even warm, as I understood.
  40. But if RV is bypassing, stuff usually gets hot,...

    But if RV is bypassing, stuff usually gets hot, right?
  41. Oops...didn't catch those details.

    Oops...didn't catch those details.
  42. Doesn't that indicate just the motor is running?...

    Doesn't that indicate just the motor is running? Or the scrolls aren't scrolling?

    I've seen one example of an accumulator not siphoning out the collected oil. First compressor failed...
  43. Replies
    45
    Views
    1,769

    Well, the likelihood of a bad, new Copeland...

    Well, the likelihood of a bad, new Copeland scroll compressor out of the box is virtually non-existent to my thinking. There's something external the OP isn't seeing or overlooked.
  44. Replies
    45
    Views
    1,769

    Interesting... :yes:

    Interesting... :yes:
  45. Replies
    45
    Views
    1,769

    Remember, the RV can't shift if there's no...

    Remember, the RV can't shift if there's no pressure differential..the pilot valve will shift but it just
    diverts system pressures to the main valve.

    3.5 amp draw with no pressure change would...
  46. Replies
    11
    Views
    700

    But...in the real world, Mfg's do make mistakes....

    But...in the real world, Mfg's do make mistakes. Few weeks ago, a less experienced friendly competitor asked me to help him find the exact same problem with a new pack heat pump. The factory...
  47. Replies
    11
    Views
    700

    New unit, so likely an external problem...you...

    New unit, so likely an external problem...you have to check the "W" (white) circuit from the stat to the unit. Could be shorted stat conductor, miswired stat connections. You could disconnect the...
  48. Replies
    23
    Views
    1,138

    I haven't installed anything but HP 3000's and as...

    I haven't installed anything but HP 3000's and as said previously, if the set up had cycle options I left them at the factory settings. Whether my heat pump is running heat or cool, the room temp...
  49. Replies
    23
    Views
    1,138

    https://yoursmiles.org/tsmile/rulez/t2002.gif...

    https://yoursmiles.org/tsmile/rulez/t2002.gif
  50. Replies
    23
    Views
    1,138

    I just remembered the old mechanical stat heat...

    I just remembered the old mechanical stat heat anticipators which showed the adjuster arrow pointing in the direction of longer (maybe shorter) cycles. An oversized furnace, set for shorter run...
Results 1 to 50 of 1000
Page 1 of 20 1 2 3 4