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  1. Thread: Favorite VFD

    by gravity
    Replies
    35
    Views
    4,066

    Favorite VFD

    I had a drive the other day that had a amperage imbalance. I only had a reg. meter to check volts and amps.

    L1 9.5 l2 4 l3 9.5 on output of drive. Had crazy volt readings on output of drive with...
  2. Thread: Favorite VFD

    by gravity
    Replies
    35
    Views
    4,066

    Cool. Now how do i check and know what im looking...

    Cool. Now how do i check and know what im looking for?
  3. Thread: Sean-do Can-do

    by gravity
    Replies
    2
    Views
    263

    Sweet. Gotta improvise. No liebert near you? ...

    Sweet. Gotta improvise. No liebert near you?


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  4. Replies
    1
    Views
    213

    Wish I could see it. My Ak's are still going...

    Wish I could see it.

    My Ak's are still going 4+ years strong


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  5. Thread: Favorite VFD

    by gravity
    Replies
    35
    Views
    4,066

    What is your guys meter of choice for checking...

    What is your guys meter of choice for checking output of drives? I just bought a fluke 87v


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  6. Thread: Just for fun

    by gravity
    Replies
    22
    Views
    501

    If its a limit. The little metal plate under the...

    If its a limit. The little metal plate under the limit was lifting and shorting the limit for a second
  7. Thread: Just for fun

    by gravity
    Replies
    22
    Views
    501

    Whats a 3 flash?

    Whats a 3 flash?
  8. Thread: Just for fun

    by gravity
    Replies
    22
    Views
    501

    Just for fun

    Heat anticipator in the stat. Blower off delay keeps running but then stat calls for heat again


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  9. Replies
    7
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    223

    Combustion Analyzers on gas packs

    You may find higher o2 and lower flue temps if working on a gas pack that has 1 inducer with 2 gas manifolds with only 1 manifold firing. Other than that example, all others should have normal...
  10. Replies
    11
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    328

    To level the floor so it had no dips Sent...

    To level the floor so it had no dips


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  11. Thread: TXV

    by gravity
    Replies
    22
    Views
    794

    If the powerhead fails with an internal...

    If the powerhead fails with an internal check....you still get no flow in heat or cool direction.


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  12. Replies
    6
    Views
    440

    I know. I get frustrated sometimes because i have...

    I know. I get frustrated sometimes because i have a good answer but, dont want to read and see if its there.


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  13. Bypass Humidifier installed on return (how can it NOT reduce furnace efficien...

    I always put fan powered on gas and bypass on heat pump

    Unless of course, the customers were rich enough to do steam ( aprilaire 800 )

    The honeywell truesteam is junk


    Sent from my iPhone...
  14. Replies
    6
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    440

    Everything he said. Beat me to it GT ...

    Everything he said.

    Beat me to it GT


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  15. Thread: TXV

    by gravity
    Replies
    22
    Views
    794

    Any brand that had 1-3 ton copeland scrolls had...

    Any brand that had 1-3 ton copeland scrolls had this problem. It was supposedly due to the new rust inhibitor they used.


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  16. Thread: TXV

    by gravity
    Replies
    22
    Views
    794

    TXV

    If the powerhead loses its charge, the txv will shut.

    Older tranes however, used a check valve inside and out. So you wouldnt have known until ac kicked on or defrost cycle


    Sent from my...
  17. A few things come to mind. A bypass should be...

    A few things come to mind.

    A bypass should be on a heat pump and not a furnace. The bypass can make the furnace cycle on limit.

    It doesn't matter if it's on the return or supply, if it's on the...
  18. Replies
    22
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    972

    They have trap sensors??? Ive been in the...

    They have trap sensors???

    Ive been in the commercial side of things for 3-4 years now. Havent seen the cool new residential stuff in a while
  19. Replies
    22
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    972

    Usually happened on startup or beginning of the...

    Usually happened on startup or beginning of the season because the furnace trap was dry. I cant say for sure but, if the drains were piped with no air gaps i think it was a bigger problem.

    You...
  20. Replies
    15
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    1,048

    Could be a leak where the top of the blower...

    Could be a leak where the top of the blower cabinet meets the bottom of the burner compartment.

    I had a big leak that was sucking the heat from the burner over the ignitor wires and into the...
  21. Replies
    22
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    1,061

    Top drawing is a no go. Bottom drawing is how it...

    Top drawing is a no go. Bottom drawing is how it should be


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  22. Replies
    43
    Views
    2,198

    Sounds like a plugged drain. Maybe the secondary...

    Sounds like a plugged drain. Maybe the secondary is plugged. Remove the inducer and collector box and see what it looks like.

    Combustion test would be nice


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  23. Replies
    22
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    972

    A few things come to mind Drill a hole in the...

    A few things come to mind

    Drill a hole in the exhaust at the furnace and run the vinyl in the exhaust pipe to outside. Seal the hole so no exhaust leaks.

    Stub 1-1/4" pipe outside and have some...
  24. Replies
    45
    Views
    2,042

    Thanks Sent from my iPhone using Tapatalk

    Thanks


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  25. A buckboost transformer would work Sent from...

    A buckboost transformer would work


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  26. We have 277v single phase wshp. We also have...

    We have 277v single phase wshp.

    We also have 208/230v single phase units


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  27. Replies
    21
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    1,257

    Thanks for the update Sent from my iPhone...

    Thanks for the update


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  28. Replies
    45
    Views
    2,042

    Little confused. Did you use the icm175? Or...

    Little confused. Did you use the icm175? Or another brand?


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  29. Seems like it will work out for you Sent...

    Seems like it will work out for you


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  30. Make sure its not asbestos Sent from my...

    Make sure its not asbestos


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  31. Not going to work Sent from my iPhone using...

    Not going to work


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  32. You could temporarily install a shutoff valve...

    You could temporarily install a shutoff valve until you can get back. Unless it has a defrost cycle


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  33. Replies
    23
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    1,675

    I was joking.....looks awesome

    I was joking.....looks awesome
  34. Replies
    52
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    3,038

    I was just joking. Ive heard that about ice...

    I was just joking. Ive heard that about ice machines though.

    Its for when the roofers fix the pitch pocket. They can lift the unit up and set it around the corner.
  35. Replies
    39
    Views
    2,311

    Staybright 8 Sent from my iPhone using...

    Staybright 8


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  36. Thread: Errrrr

    by gravity
    Replies
    27
    Views
    1,424

    X4 Sent from my iPhone using Tapatalk

    X4


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  37. Replies
    52
    Views
    3,038

    It's designed to work with a 50' line set. No...

    It's designed to work with a 50' line set. No more and no less!!!


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  38. Replies
    39
    Views
    2,311

    What's wrong with staybright? I haven't had a...

    What's wrong with staybright? I haven't had a leak yet


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  39. Replies
    15
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    1,829

    The first pic, the grey wire? Is that a #6 wire...

    The first pic, the grey wire? Is that a #6 wire powering that thing?


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  40. Replies
    39
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    2,311

    No, cant use 15% rod on that type of valve. Need...

    No, cant use 15% rod on that type of valve. Need to use 45% or staybright 8


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  41. Replies
    39
    Views
    2,311

    Hahaha Mount everest. Yes, it appears someone...

    Hahaha

    Mount everest. Yes, it appears someone was using 6 or 15% brazing rod. Then walked away. It was probably pissing when they were adding gas.

    Dont know who did it. That unit holds approx...
  42. Replies
    23
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    1,675

    That one piece...::shake head:: Looks good...

    That one piece...::shake head::

    Looks good man. Id work with you.


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  43. Replies
    45
    Views
    2,042

    Yes....it had too much charge. Weighed in per the...

    Yes....it had too much charge. Weighed in per the book after 230micron evac.


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  44. I usually see a uv scanner on those things. Are...

    I usually see a uv scanner on those things. Are you positive its a flame rod?

    If it is, youre getting some kind of interference. You said this is during pre-purge? It should lock out if it senses...
  45. Replies
    5
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    679

    Ended up raising the minimum cfm higher on a few...

    Ended up raising the minimum cfm higher on a few boxes. No more issues yet in 2 weeks. Keep fingers crossed.


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  46. Replies
    45
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    2,042

    Repaired unit. Ended up putting a different LPS...

    Repaired unit. Ended up putting a different LPS on it. Old one was rated at 65 cut in / 20 cutout.

    I put a 35 cut in/ 15 cut out. Everything works good now


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  47. Replies
    39
    Views
    2,311

    Think i found it

    Think i found one of the leaks

    555591555601555611


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  48. Replies
    7
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    591

    I own the sdmn6 and testo 510. They are both very...

    I own the sdmn6 and testo 510. They are both very good manometers.

    I would choose the sdmn6 because it has the extra draft tester feature.
  49. Thread: pressure test

    by gravity
    Replies
    7
    Views
    852

    That calculation is for nitrogen. Not the mix of...

    That calculation is for nitrogen. Not the mix of gases.

    I once left pressure on a rtu at about 100-110* on the roof. When i came back in the morning it was 60-65 or so and the pressure had dropped...
  50. Sounds like a frozen regulator or possible...

    Sounds like a frozen regulator or possible frozen/blocked vent limiter
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