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Type: Posts; User: htroberts

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  1. Internet-based temperature and humidity monitoring?

    Has anyone found an inexpensive temperature & humidity logger that automagically uploads data to a web server? I want history and either email or SMS alerts if either value exceeds limits I set.
    ...
  2. Should I use a two-pole contactor on a single-phase 240V motor?

    I also asked this question on mikeholt.com, but I wanted to see what HVAC-talk thinks.

    I was asked recently why I was using a two-pole contactor to control a 1 240V motor (versus a marginally...
  3. Thanks, it was the Diversitech "high rise" pan...

    Thanks, it was the Diversitech "high rise" pan that I had in mind.
  4. Who makes drain pan with integral a/h support?

    I've seen these at one of the supply houses, but I can't remember where it was or who made it...

    basically a plastic drain pan with molded-in support for an air handler. I think it had (anti)...
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    Of course there's a "correct" load. It's just...

    Of course there's a "correct" load. It's just only correct at one particular set of conditions, and the building/system operate under very different conditions at different times...

    By...
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    Could you find it experimentally? Start with the...

    Could you find it experimentally? Start with the house at a known temperature, and then, on a cold day, add heat at a known rate and see how the temp drops, then compare that to the temp drop with no...
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    So, do you really mean a *variable* speed blower,...

    So, do you really mean a *variable* speed blower, or a multi-speed blower? How many speeds do multi-speed blowers have? Just two? Select one for maximum dehumidification and one for full-capacity...
  8. How are you supposed to use Appion megaflow kit?

    Looking at Appion's "megaflow" kit , I'm trying to figure out how this is intended to be used. I don't see an application note for this thing on Appion's web site (and no, I haven't tried contacting...
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    Is paradigm manifold a real product?

    i.e. can one purchase and take delivery of it? Where from (online)?
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    Anyone purchased from hvacr-tools.com?

    Their website sucks, but prices seem good.... Anyone have experience with them?
  11. It's not DIY, but I don't have enough posts yet...

    It's not DIY, but I don't have enough posts yet to qualify for 'pro' access.

    That would be electrically equivalent, of course, but there are several wires that terminate to the 'box' side of the...
  12. Anybody seen a 2-pole DP contactor with a (neutral) feedthrough?

    I'm looking for a replacement for a 2-pole (switches 2 hot wires of 240V single-phase circuit) definite purpose contactor. The trick is that I need a third, unswitched, 'pole' (for a neutral).
    ...
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    Shouldn't be too terribly hard to find. Snap-on...

    Shouldn't be too terribly hard to find. Snap-on and Matco have them, so do Sears and Amazon. If you work on airplanes or just want a really expensive one, look at http://www.cditorque.com/
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    We use MAPP gas for soldering and oxy/acetylene...

    We use MAPP gas for soldering and oxy/acetylene for brazing.
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    I like the transmission-fluid rag to keep the...

    I like the transmission-fluid rag to keep the solder from sticking to the tube. I'm pretty sure my instructor would not approve of that particular technique...

    Thanks for the link, the video was...
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    I meant to get back earlier & say thanks for the...

    I meant to get back earlier & say thanks for the advice, but have been busy. I was indeed using too much heat, although I'd have sworn I wasn't. One of the guys in the class with more field...
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    Thanks. BTW, I like your signature quotes......

    Thanks.

    BTW, I like your signature quotes... and where'd you get the cutaway compressor illustration? I need a picture for the cover of my notebook. I was going to ask the girl (:grin2:) with the...
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    I'm working on it, but I don't want to make a...

    I'm working on it, but I don't want to make a bunch of nonsense posts just to get to fifteen.



    No, I mean 1/4" O.D. copper. We're soldering 1/4, 5/16, and 3/8 right now and will move on to...
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    Soldering advice

    Probably not the best forum for this post, but I'm not eligible for access to the 'pro' section yet...

    I'm about halfway through my local community college's first HVAC/R course, and we're...
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    That was my expectation as well (about gauges)....

    That was my expectation as well (about gauges). The question about 'big' equipment came from someone else's response:



    which made me wonder how many people provide *all* their own tools.


    ...
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    That's a different viewpoint from what I'm used...

    That's a different viewpoint from what I'm used to. I've done electrical work, and all the 'big' equipment, like threading & pulling machines, wire carts, hydraulic tools (benders, punches, lug...
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    How many sets of gauges?

    I'm a new student in a community college HVAC/R program, and wondered how many sets of gauges a typical residential service tech might carry around. Also, are these normally 'shop' (supplied by...
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    Who made the monster heat exchanger? That for the...

    Who made the monster heat exchanger? That for the snow-melt?
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