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Type: Posts; User: perel

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  1. Replies
    17
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    2,309

    I know Cropp-Metcalfe in the DC area offers this...

    I know Cropp-Metcalfe in the DC area offers this - basically they sell it in place of the Carrier 10-year extended warranty on new equipment. They might let you buy it on older equipment that's still...
  2. Replies
    45
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    3,875

    Update - Carrier Mid-Atlantic still won't put...

    Update - Carrier Mid-Atlantic still won't put this case through to someone who can actually help. They *finally* returned my contractor's calls, but didn't say anything useful, just that the humidity...
  3. Thread: carrier warranty

    by perel
    Replies
    13
    Views
    1,370

    Even from an HO's perspective, Carrier...

    Even from an HO's perspective, Carrier Mid-Atlantic seems to be having major problems right now. I'm having a coil freezeup problem which requires Carrier tech support. They just won't return my...
  4. First off, I do realize that a final...

    First off, I do realize that a final determination can't be made while anything is abnormal about the system. However, the workaround is just putting the airflows back to where they would be with a...
  5. I have a new Infinity system installed, and it's...

    I have a new Infinity system installed, and it's running great. There is an issue with the Infinity Control that requires AC Airflow set to Maximum as a workaround; until that's fixed the system...
  6. Why is this making me think of Payson's...

    Why is this making me think of Payson's ADJUSTABLE SUPERHEAT metering device? :D

    Seriously, it was very interesting to see some hard numbers on this.
  7. Replies
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    870

    At 75 IAT, equipment actually delivers half a ton...

    At 75 IAT, equipment actually delivers half a ton less cooling than it's designed for. Manufacturers rate at 80 IAT and applying the proper derating for a realistic indoor temperature knocks several...
  8. Thread: Noise ratings

    by perel
    Replies
    7
    Views
    674

    This is VERY important.. the published sound...

    This is VERY important.. the published sound ratings are objective ones, while you're probably more concerned about subjective sound. Unless this is to meet a HOA regulation, in which case the...
  9. Replies
    16
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    1,519

    IMO is "in my opinion". High velocity AC has...

    IMO is "in my opinion".

    High velocity AC has ducts, but they're very SMALL ducts. "Ductless" AC is called a "minisplit" - no ductwork, just the refrigerant lines run between a very small outdoor...
  10. Replies
    10
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    3,083

    If he really wants low maintainance, and the...

    If he really wants low maintainance, and the tenants are paying the bills.. rip the furnace out, put in electric baseboard, and add a couple single appliance circuit outlets for the tenant to plug...
  11. Replies
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    1,519

    First off: insulate, then caulk, then insulate...

    First off: insulate, then caulk, then insulate some more, then get good storm windows (interior storms work great in a lot of old houses), then insulate some more.. you get the idea. The big money...
  12. Replies
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    2,092

    You may want to think about putting a single...

    You may want to think about putting a single central fan in instead of the individual fans - no noise in the bathroom that way, and you can use an ERV as the central fan. That way with a new tight...
  13. Replies
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    1,540

    Thanks for posting this link - I learned a lot.

    Thanks for posting this link - I learned a lot.
  14. Replies
    45
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    3,875

    The only time I turned the system OFF during a...

    The only time I turned the system OFF during a call for cooling was when the coil was a block of ice and I wanted it to stop cooling and run fan only to melt said ice. No one is turning the system...
  15. Replies
    10
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    712

    How about damage to condensing units? How far...

    How about damage to condensing units? How far horizontal & vertical does the condensing furnace flue need to be from the AC condenser? (Is 1' back and 4' up from the top of the unit enough spacing?)
  16. Replies
    45
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    3,875

    plain spoken - the problem I am seeing does not...

    plain spoken - the problem I am seeing does not only occur when turning the Control OFF from Dehumidify. I observed it when turning the Control off from both High Cool and Low Cool, which I think is...
  17. Replies
    13
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    1,167

    I'm familiar with the Polaris condensing water...

    I'm familiar with the Polaris condensing water heater.. if you're not using it for radiant heating as well, the price is insane. Is there a more reasonably priced sealed combustion water heater,...
  18. Replies
    10
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    712

    With a concentric kit sloped so that condensate...

    With a concentric kit sloped so that condensate runs back towards the unit per installation instructions, I don't see how condensate could be dripping out the vent pipe. Am I missing something here?
  19. Replies
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    3,215

    The EV1 used a heatpump for heating - as it was a...

    The EV1 used a heatpump for heating - as it was a pure electric vehicle, there was no engine waste heat. It was also a research project, so GM was trying lots of unusual stuff out in that car....
  20. Replies
    6
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    828

    Sounds like a good opportunity to get a Manual D...

    Sounds like a good opportunity to get a Manual D calc done and size the ductwork right. Most flex duct out there is undersized..
  21. Replies
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    2,419

    Turns out I'm having this problem as well, -10...

    Turns out I'm having this problem as well, -10 control. Apparently it needs to be replaced with a -12 version control, which is pretty obviously a bugfix if it, well, fixes a bug.

    See the third...
  22. Replies
    45
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    3,875

    They'll be replacing the UI. Can't get one today,...

    They'll be replacing the UI. Can't get one today, though, so I'm just going to watch it over the weekend. Anything else that I should watch for or precautions to take to help it maybe not ice up?...
  23. Replies
    11
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    1,540

    Yep, at the end of 300.22(C): Exception: This...

    Yep, at the end of 300.22(C):
    Exception: This section shall not apply to the joist or stud
    spaces of dwelling units where the wiring passes through
    such spaces perpendicular to the long dimension...
  24. Replies
    45
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    3,875

    I will mention it to them. This is the first time...

    I will mention it to them. This is the first time I noticed the continued runtime; before, with the incorrect sheet metal, it did appear to shut off correctly when the system was turned off at the...
  25. Replies
    11
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    1,540

    Regular type NM cable (what's generally called...

    Regular type NM cable (what's generally called Romex) is not plenum rated. Type AC cable (often incorrectly called BX) is allowed in plenums, however.

    The main concern is the toxic fumes that the...
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