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  1. Thread: XL20i noise

    by Shophound
    Replies
    27
    Views
    766

    Apart from the thermostat and alarm concerns, I'd...

    Apart from the thermostat and alarm concerns, I'd really want to take a good, hard look at the duct design and layout. You can have the fanciest, highest SEER system in the world, replete with bells...
  2. I'd be curious about the multi-position switch....

    I'd be curious about the multi-position switch. That is all.
  3. Sounds like the element thermostat has a twenty...

    Sounds like the element thermostat has a twenty degree deadband (range between when element turns on and turns off).

    I would not trust your meat thermometer readings entirely. A thermocouple clamp...
  4. I say find a contractor who not only understands...

    I say find a contractor who not only understands the value a TXV adds to a system, but also understands why a filter-drier should be installed any time the system is open for work, as Baldloonie has...
  5. Replies
    22
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    585

    Best not to evacuate through a gauge manifold. ...

    Best not to evacuate through a gauge manifold.

    Are your 1/2" hoses actual vacuum (low permeability) hoses or charging hoses sized at 1/2"?

    What type of micron gauge are you using? Does the...
  6. What I would want to know is the temperature of...

    What I would want to know is the temperature of the compressor discharge gas going into the desuperheater. A good tech with a type k thermocouple pipe clamp thermometer could do this, and interpret...
  7. Ditto on the nitro still being in the system....

    Ditto on the nitro still being in the system. With the mild weather OP has experienced, the unit should have delivered SOME amount of comfort, even if is mismatched.
  8. Replies
    1
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    126

    6" flex duct, installed and sealed correctly,...

    6" flex duct, installed and sealed correctly, will probably flow more air, but at a reduced velocity, over that of a properly installed and sealed 5" flex duct run equivalent. It might affect supply...
  9. One more thing: is there a mixing valve in the...

    One more thing: is there a mixing valve in the water piping to and/or from the water heater?
  10. How is the cooling performance of your heat pump?...

    How is the cooling performance of your heat pump?

    If the desuperheater circuit was stealing heat from your tank, I think two things would be going on:

    a) heater elements would run continuously...
  11. + 1, X2, etc. What we have here is a prime...

    + 1, X2, etc. What we have here is a prime example why multi-family housing needs and hollow building construction can be problematic. Add to that unsealed HVAC ducting, or worse yet, building...
  12. The "check valve" is more properly called a...

    The "check valve" is more properly called a backdraft damper for the exhaust fan.

    The bath fan may be pulling smoke into the bathroom from the plumbing penetrations below the sink. You mention a...
  13. If the return duct passes through the apartment...

    If the return duct passes through the apartment below you to reach the furnace in the basement, or if it uses a building cavity anywhere along the return path to reach the furnace, it can draw in...
  14. If the two furnaces on the left are induced draft...

    If the two furnaces on the left are induced draft and the two on the right are natural draft...ruh roh...
  15. Replies
    28
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    848

    It means that, at worst case, both of those...

    It means that, at worst case, both of those elbows are acting like 60 feet of straight duct in terms of resistance per foot of length, in addition to any straight duct length your system already has....
  16. Yes, but very briefly. Breaker can trip if LRA...

    Yes, but very briefly. Breaker can trip if LRA time at startup is prolonged.
  17. Sealing the ductwork can never hurt anything...

    Sealing the ductwork can never hurt anything unless it is so leaky that upon sealing it the static pressure in the system becomes too high for the blower in the air handler or furnace.

    In your...
  18. Replies
    12
    Views
    355

    Is the basement open to the other floors...that...

    Is the basement open to the other floors...that is, there is either no door between the basement and the first floor, or if there is a door (or more than one) it stays open all of the time?
  19. Okay, let's run with this potential vs. my...

    Okay, let's run with this potential vs. my earlier suggestion. Now, if you find the piston has trash in it, the first thing that should run through your mind is "Where did that trash come from?" If...
  20. There are 220 volt two pole breakers that are...

    There are 220 volt two pole breakers that are GFCI.

    Is there a permit pulled on this installation? If so electrical inspector may require GFCI double pole for 220 volt in addition to Daikin...
  21. Replies
    68
    Views
    2,098

    If you move the outlet next to where the cable...

    If you move the outlet next to where the cable and speaker connections are, you then have a free wall behind that chair to install an additional return air gril.
  22. To Wes: I think you need to SLOW DOWN. This...

    To Wes:

    I think you need to SLOW DOWN. This type of situation is never resolved satisfactorily by taking wild swings and hoping for the best.

    Think about this: what would cause you to have...
  23. Replies
    10
    Views
    344

    By "vent" do I assume correctly you're referring...

    By "vent" do I assume correctly you're referring to the HVAC supply outlet and not a bath exhaust fan? For the sake of my reply I will assume you mean HVAC supply "vent" and not a bath exhaust fan.
    ...
  24. If the installation instructions say to use one,...

    If the installation instructions say to use one, and you want one installed, find another electrician who won't argue with you but will give you what you request.

    If the indoor portion of the mini...
  25. If you either connected the condenser to the...

    If you either connected the condenser to the wrong line set, or the 24 volt signal to the wrong condenser, you could have an air handler icing up somewhere, but not necessarily in the apartment...
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