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  1. Thread: RC Studio Toolkit

    by swei
    Replies
    4
    Views
    953

    This isn't the RC-Toolkit password itself, is it?...

    This isn't the RC-Toolkit password itself, is it? The default is in the manual.
  2. Replies
    16
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    6,128

    Not a shilling, and the thread has drifted quite...

    Not a shilling, and the thread has drifted quite a bit from where it started so apologies if I mis-read things.

    WSHP is a big umbrella that really does cover a lot of applications. I do not sell...
  3. Replies
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    6,128

    Multistack WSHPs are easy to work on. Slick...

    Multistack WSHPs are easy to work on. Slick design, especially for retrofits.
  4. How big is the pump?

    How big is the pump?
  5. Replies
    69
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    8,181

    Fluke 12 stays in the bag and covers most basic...

    Fluke 12 stays in the bag and covers most basic stuff. Still prefer the controls over a dial for fast use, and (V) Check is really great for a quick eval on unknown wires. Fluke 337 clamp is not...
  6. Thread: R-22 retrofits.

    by swei
    Replies
    12
    Views
    1,880

    Minus 50 incident

    Quite a story there -- plenty of mis-application and some very unfortunate outcomes.

    http://www.epa.gov/greenchill/downloads/ul_whitepaper_flammablerefrigerants.pdf brought me up to speed a bit. ...
  7. Replies
    67
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    3,460

    go by

    Unit spec for determining the Wattage/amperage, code (NEC in North America, as modified by local or state codes if those apply) for determining wire and breaker sizes. Sometimes the equipment will...
  8. Thread: RCB droppings.

    by swei
    Replies
    28
    Views
    3,183

    tape

    3M 2228 Rubber Mastic really seals things up well.
  9. Replies
    9
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    857

    Feeding a VFD with single phase power

    Just be sure there's no hard-wired phase failure shutdown in the VFD firmware. Most anything 3HP or less comes equipped for single phase input (rectifier diodes rated for at least 1.73x input...
  10. Replies
    47
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    3,812

    UEI C155

    I'm really liking this machine. I opted to skip the printer and buy the BlueTooth option instead. I'm testing a beta Android app which allows the analyzer to print to my phone so I can email the...
  11. Replies
    74
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    12,695

    belated reply

    I know GSHPs are popular in GA, but I just looked you up to see what the numbers are. According to http://www.homeinsight.com/home-value/ga/atlanta.asp you have 1832 heating degree-days and 2319...
  12. Amazingly progressive model, even better than...

    Amazingly progressive model, even better than Germany (within limits.) The US seems to have an allergy to feed-in tariffs -- Gainesville, FL is the only one I know of. I'm in New Mexico, where we...
  13. Replies
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    3,047

    wired headset

    Audio quality sucks to varying degrees on all BT devices. After owning half a dozen, I finally gave up and went back to wired headsets. Plantronics MX-500 series are ridiculously comfortable and...
  14. Replies
    7
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    1,262

    charging current

    Those 6-volt batteries are probably either golf car batteries or L-16s. You're going to need at least 30A of charging current to get them to accept a full charge. Got pictures, or make/model, or...
  15. Do not try this at home. Quite dangerous for...

    Do not try this at home. Quite dangerous for your genset, your health, and the house wiring if the utility power is on. If the utility power is off, you are putting their linemen at great risk. To...
  16. There's a reason electricians call this a suicide...

    There's a reason electricians call this a suicide cord. Seriously.

    Breaker interlock kits are available for most popular residential panels and are not very expensive (under $20 for many of...
  17. Replies
    67
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    3,460

    90C connections

    What equipment has 90C rated terminations? Even the solid aluminum lugs on an 800A disconnect still have 75C labeling.

    What the 90C rating on the wire buys you is a higher starting ampacity for...
  18. Replies
    74
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    12,695

    I've seen the heat load dumped into PEX loops...

    I've seen the heat load dumped into PEX loops that circle the house just outside the basement walls. Clobbers basement humidity during the summer.
  19. Replies
    74
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    12,695

    Geo exchange still works best when the seasonal...

    Geo exchange still works best when the seasonal heating load and seasonal cooling load are roughly comparable. If the imbalance between them is significant and there's no significant water flow...
  20. Replies
    47
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    3,812

    UEI

    Local rep put me on the phone with Dave Wheaton at UEI this morning - very helpful and well informed guy. There are factory-installed BlueTooth and RS-232 options. You can add them later (or...
  21. Replies
    47
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    3,812

    Very interested in any realworld reports on...

    Very interested in any realworld reports on these. Five years of not buying O2 sensors is a big deal.
  22. Just realized I need to rework some calcs on a...

    Just realized I need to rework some calcs on a MUA system. http://www.engineeringtoolbox.com/air-altitude-density-volume-d_195.html has some good info on the properties of air at altitude.
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