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  1. Replies
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    Good idea. I do radio tower ac repair. I've...

    Good idea.

    I do radio tower ac repair. I've flung lit torches when the energy sporadically shocks you. Why do you thing they ground barbwire fences.
  2. Replies
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    1,269

    Has this furnace worked for year last winter?

    Has this furnace worked for year last winter?
  3. Replies
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    1,000

    rest assured, I have done dozens of multistory...

    rest assured, I have done dozens of multistory upgrades to HP 410a changeouts. 1-1/8" suction with traps on three ton systems. Surely, mineral oil is left behind. Had only one refrigerant related...
  4. Replies
    3
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    401

    Trane had backorder on blower motor last year. 6...

    Trane had backorder on blower motor last year. 6 year old. last winter, no heat for six weeks. i'm not Trane dealer. I sell the competive.

    My supplier will order similiar equipment and let me...
  5. This is a garage. Trying to convince inspector...

    This is a garage. Trying to convince inspector that it is going to be a cave to get the OK to run AC in the cave. Lets look at all that will be required for a man cave, First, it now is a living...
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    350

    Wouldn't think so. How about model #. Check G to...

    Wouldn't think so. How about model #. Check G to 24 vac at stat. Work?
  7. i can't agree about Minisplits in a garage. Too...

    i can't agree about Minisplits in a garage. Too expensive, too hard to clean, too dusty. Most garages are work shops.
  8. Replies
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    857

    Copeland Air Conditioning Training Manual ...

    Copeland Air Conditioning Training Manual

    Application Engineering Bulletin AE-1301, and AE 1316 says pump down "may be used instead of, or in cojunction with"
  9. Replies
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    857

    Copeland Air Conditioning Training Manual for...

    Copeland Air Conditioning Training Manual for ZR90K3 etc etc. Scroll Compressor states otherwise!
  10. Tenant had to move out because of the shocking...

    Tenant had to move out because of the shocking shower head. The water pipe was not grounding well at all.
  11. Replies
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    857

    I sited "Modern Refrigeration and AC" chapter on...

    I sited "Modern Refrigeration and AC" chapter on compressors. It says "ALL".

    I think this is a dangerious statement considering many manufactures do not incude heaters on there AC equipment and...
  12. Replies
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    857

    I have taken this item from "modern Refrigeration...

    I have taken this item from "modern Refrigeration and AC" text book, Chapter is compressors. Many students will be misled by the "ALL" statement in the textrbook. This may be on there classwork...
  13. Replies
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    857

    How about ac compressors? Is there argument...

    How about ac compressors? Is there argument here? Using AC if compressor is below room temperature is not forbidden, is it?
  14. Replies
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    857

    I agree, But a pump down circuit will void the...

    I agree, But a pump down circuit will void the crankcase of refrigerant.
  15. Take a look at powrr pole and neutral, or let...

    Take a look at powrr pole and neutral, or let power company check.

    I had an old house that was getting all sorts of strange voltage to groung reading. Added more ground rods, grounded 50' copper,...
  16. Replies
    24
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    857

    No crankcase heater

    I am in discussion about a textbook that states "ALL compressors operating lower then evap temp require crankcase haeters"

    I have often seen a pump down circuit used to protect against slugging...
  17. Replies
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    528

    Freezer compressors depend on a specific amount...

    Freezer compressors depend on a specific amount of suction pressure to keep from overloading. A freezer has a lower temperature therefor runs at a lower pressure to keep from overloading the...
  18. Replies
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    2,721

    I have reused furnaces from same customer. You...

    I have reused furnaces from same customer. You must be able to show them that it was working before the swap.

    Much different if you are providing the used furnace.
  19. Replies
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    1,406

    "ECM's draw the required power to maintain rpm's....

    "ECM's draw the required power to maintain rpm's. Higher or lower depending on static. "
    How does it know static?
  20. Replies
    12
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    628

    I always heat up new made flares to relieve...

    I always heat up new made flares to relieve stresses in the flare before torqueing it
  21. Get unit model # and serial #and call Trane. I...

    Get unit model # and serial #and call Trane.

    I am thinking that this may be a 240 VAC heater, using a drop down transformer. Trane has a weird way of doing CCHs.
  22. Replies
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    463

    defrost timer usuually not on a cooler. Does...

    defrost timer usuually not on a cooler.

    Does the box light work?
  23. Replies
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    456

    I'm guessing economizer.

    I'm guessing economizer.
  24. Replies
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    1,406

    I also agree.

    I also agree.
  25. Replies
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    1,406

    This is where I get confused. As motor ramps up,...

    This is where I get confused. As motor ramps up, does SP increase and wattage decrease. Theoretically a blocked duct would be very high SP.
  26. Replies
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    1,406

    how does ECM motor adjust speed?

    A standard PSC blower motor increases speed as SP increases while amperage drops. This can be seen by blocking a blower discharge.

    How does the ECM manage to control SP. Seems the ECM would try...
  27. How bout that "move thatbus" show. You can't get...

    How bout that "move thatbus" show. You can't get inspectors out there, done in one week. I've waited a full day for just an insulation inspection. Everything on hold until green tag. And...
  28. Wouldn't you also need a furnace to make it a...

    Wouldn't you also need a furnace to make it a system? I'm sure local laws are different.
  29. Replies
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    1,866

    there is more heat in a cup of coffee then a lit...

    there is more heat in a cup of coffee then a lit match.
  30. Did new install, 9 years ago. Heavy smokers and...

    Did new install, 9 years ago. Heavy smokers and three dogs. Nice filter rack installed.
    Got a "no heat" call. When I pulled the filter out, they commented that they wondered where the filter went!
  31. Replies
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    477

    honeywell has videos that explains different gas...

    honeywell has videos that explains different gas ignition set-ups. I'm old and learned alot.
  32. Replies
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    6,128

    Do your customers a favor, don't try to learn on...

    Do your customers a favor, don't try to learn on their equipment. Wrong charge or set-up could cause damage to their equipment a year or two down the road. Warranty call-backs will kill your...
  33. Replies
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    1,916

    2" is a pretty high goal for a residential job. ...

    2" is a pretty high goal for a residential job.


    Hard pipe doesn't withstand the cable or phone guy in the attic
  34. Replies
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    379

    You don't say at what temp it shut off or how. ...

    You don't say at what temp it shut off or how.

    May have an issue that fire is stuck on. Safetys shut the system down. You reset computer by cycling off then on. Restart happens again.
  35. Replies
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    556

    Here in Texas, I continually maintain some...

    Here in Texas, I continually maintain some systems that were new when Jimmy Carter was prez. Pans rust out, but functioning fine.
  36. Replies
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    630

    Believe it is a 200 volt motor, A trane special...

    Believe it is a 200 volt motor, A trane special flavor. Maybe higher service duty.
  37. Replies
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    659

    You mostly get a DVD to watch

    You mostly get a DVD to watch
  38. Replies
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    659

    Marketing video. not much help......either is...

    Marketing video. not much help......either is Zebra's tech line or email. no calls returned.
  39. Very large outlay in refrigerants, many flavors...

    Very large outlay in refrigerants, many flavors and a recovery tank for each. Parts are less generic so you need wider selection. Also, Case catalog for hardware and door gaskets- which is always...
  40. Replies
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    1,499

    Find hissing with a rubber hose. Hissing tells...

    Find hissing with a rubber hose. Hissing tells alot.
  41. Replies
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    1,499

    Hiss- overpressure, then bypasses, then shutdown...

    Hiss- overpressure, then bypasses, then shutdown on internal temp. Key is to observe pressure before hissing and right before shut-down.
  42. Replies
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    630

    I'm willing to bet thatAC coil cleaning is done...

    I'm willing to bet thatAC coil cleaning is done by a full service HVAC firm. Your best bet is to contract with those guys. They probably do filter changes too.

    Texas, you need to be licensed to...
  43. Replies
    36
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    1,499

    this is simpler for me. remove stat. manually...

    this is simpler for me. remove stat. manually set up call for heat, call for emerg heat, call for blower with jumper leads.

    I do this on almost all heat pump systems. Some times its hard to...
  44. Replies
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    326

    Millivolt systems are very sensitive to weak...

    Millivolt systems are very sensitive to weak connections or weak limits. May just be that. Thermopiles do wear out.
  45. Replies
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    1,318

    "Flue gas spill ? Is this for spilage into the...

    "Flue gas spill ? Is this for spilage into the central plant AHU duct ?? "

    I just feel there are too many issues to public safety. Your boss may feel you are more knowlegable then you really are....
  46. Replies
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    1,318

    This is no different then a home owner asking for...

    This is no different then a home owner asking for tech help. frig really needs to have some familiarity with boiler controls before working on some elses and getting paid for it.

    It is unfair to...
  47. Thread: ALC tool

    by timjimbob
    Replies
    2
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    234

    Stop and restart the communication server may...

    Stop and restart the communication server may help.
  48. Does not take account the Outside relative...

    Does not take account the Outside relative humidity.
  49. Replies
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    1,231

    Ahu coil can run either way, just a change in the...

    Ahu coil can run either way, just a change in the piston. And alot of these piston sizes are close with either 410a or 22. Close enough for many installers to say that they didn't need to change...
  50. Replies
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    581

    Old Tranes used one cap to trickle current...

    Old Tranes used one cap to trickle current through compressor winding as a CCH. Confuses me, need to look at schematic.
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