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  1. Replies
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    It depends on how cold it is outside, how well...

    It depends on how cold it is outside, how well insulated your house is, and your cost for electricity.

    For example, all things being equal, your heating bill might cost less in Hawaii than it...
  2. I guess you can manipulate data different ways to...

    I guess you can manipulate data different ways to get what you want. I just read some of that article that you posted. In one of the paragraphs it seems to support what I tried to say, but in the...
  3. What?? A physically larger evaporator coil...

    What??

    A physically larger evaporator coil will run a little bit warmer, since things are spread out a more. Since it's warmer, it will remove less moisture from the air.

    A smaller coil will...
  4. This is incorrect. A larger evaporator coil will...

    This is incorrect. A larger evaporator coil will be slightly worse at removing humidity, but will be slightly more efficient. A smaller evap coil will be slightly less efficient but will dehumidify...
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    You could also get a thermostat that has the...

    You could also get a thermostat that has the ability to have averaging sensors hooked up to it. There are some higher end Honeywell thermostats that can even do it wirelessly. That way you can keep...
  6. What's not safe about it? I realize it doesn't...

    What's not safe about it? I realize it doesn't meet code, but seriously, what kind of safety issue could possibly arise from it. Do you think someone might accidentally open the window and hang...
  7. So, in heating mode the refrigerant has to go...

    So, in heating mode the refrigerant has to go through 2 cap tubes, or is the diagram drawn incorrectly?

    It is wrong where it says "liquid side" at the top. If it's after the expansion device,...
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    Yeah, if you don't already have that function...

    Yeah, if you don't already have that function built into your current everyday multi-meter, it's a good thing to have.

    I think the consensus out there is that most stuff Supco makes is junk. On...
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    By going up 12 feet, and then over and down 25...

    By going up 12 feet, and then over and down 25 feet, you will probably get a little bit of a siphon effect going on. After the pump shuts off, the water will probably keep getting sucked out of the...
  10. Yep, you were getting the discharge service valve...

    Yep, you were getting the discharge service valve mixed up with the liquid line valve. The discharge service valve is between the compressor and the condenser. If you close that, the refrigerant...
  11. Are you sure there isn't already a thermostat...

    Are you sure there isn't already a thermostat somewhere? The outdoor condensing unit is another red flag that makes me think there's no way that low pressure switch is the only thing controlling the...
  12. Hey teddy bear, in theory shouldn't a fully...

    Hey teddy bear, in theory shouldn't a fully modulating system be able to dehumidify just as good as a stand alone dehumidifier, even with little load on the system. I don't know if I'm right or not,...
  13. Not necessarily. In the old days they sometimes...

    Not necessarily. In the old days they sometimes used low pressure controls to control temperature in walk in coolers. These systems usually didn't have solenoids. They worked similar to a constant...
  14. Are you sure the pressure switch was for...

    Are you sure the pressure switch was for temperature control? I find it odd that it would have both a pressure switch and a time clock with no thermostat. Like I said, if a low pressure control was...
  15. Yes, a thermostat is defiantly easier to get...

    Yes, a thermostat is defiantly easier to get dialed in. The only downside is that the pressure control also serves as a defrost mechanism if it's set up right.

    If you replace the pressure...
  16. Replies
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    Yes, it would probably be a few psi lower even if...

    Yes, it would probably be a few psi lower even if you didn't have the r22 in there. How much lower it will be would be hard to say. If its only like 5psi or less I wouldn't worry about it. If it...
  17. Replies
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    That sucks. Maybe try calling them up and see if...

    That sucks. Maybe try calling them up and see if there is someone else who you can plead your case to. Tell them that you believe everything is rated to handle that pressure and it should all be...
  18. Replies
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    560

    In my area, the plumbers have long standing...

    In my area, the plumbers have long standing agreements that say they are the only ones who are supposed to pipe up cooking equipment and water heaters, while hvac installers are supposed to be the...
  19. If the txv has flare nuts, it's pretty common. ...

    If the txv has flare nuts, it's pretty common. Sometimes they also leak at the stem cap.
  20. Replies
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    560

    You could "theoretically" also fill the line with...

    You could "theoretically" also fill the line with a small amount of refrigerant and use a refrigerant leak detector if you really wanted to.

    If you're going to use soap solution, just pump it up...
  21. Freezers have a lot more stuff going on with them...

    Freezers have a lot more stuff going on with them than most people think. Here is a typical sequence of operation for a simple freezer without pumpdown.

    -thermostat calls for cooling....
  22. Replies
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    You are correct that r422d isn't even close to...

    You are correct that r422d isn't even close to being right. R134a is getting closer, but if you are going to use it you should also change the oil to POE. A better choice would be to get another...
  23. Replies
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    I DON'T 'like' it!!! This isn't facebook. ...

    I DON'T 'like' it!!!

    This isn't facebook. What's next, is everyone going to start posting pictures of their lunch and stuff they're buying at the supply house each time they go? Why does it seem...
  24. Replies
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    You could also shorten the piston rods to achieve...

    You could also shorten the piston rods to achieve the same thing. :whistle:

    Actually, I think lytning had his best idea the first time when he said to fill it up with r134a (or preferably almost...
  25. Replies
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    R404a is NOT a replacement for R401b. It will...

    R404a is NOT a replacement for R401b. It will probably not work very well.

    R401b is a replacement for R12 (which is probably what this system was originally designed to use).
    R404a is a...
  26. Switching to hot water will make a small...

    Switching to hot water will make a small difference, how much I don't know.

    In order for the "window protect" deal to work, the controller needs to know outdoor temperature. That means you will...
  27. Are they actually making refrigeration equipment...

    Are they actually making refrigeration equipment designed for R407c now, or are you just planning on finding a unit designed for R22 and then dropping that in there?

    Sorry, I'm not much help, just...
  28. Replies
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    multi-speed motors amp draw question

    Is the FLA that is listed on a multi-speed motor good for all of the speed taps, or is it only for high speed. I don't think I've ever seen a motor that has listed different FLA ratings for each...
  29. I know nothing about your local, but I do know...

    I know nothing about your local, but I do know how to use Google. It appears that Journeymen in UA #250 currently make 41.68 per hour, while 1st year apprentices make 45% of that. If my calculator...
  30. I agree with snupytcb (and also with under...

    I agree with snupytcb (and also with under pressure, that's some funny s right there!).

    I have gotten a few new vans to use for work over the years, and while it is nice to have a new vehicle,...
  31. Replies
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    I've never heard of a txv system needing a larger...

    I've never heard of a txv system needing a larger condenser than a cap tube system. I would think the amount of btu's that need to be rejected are the same, no matter what type of expansion device...
  32. Replies
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    He said it already has an X-valve. As...

    He said it already has an X-valve.

    As UmmScott says, it sounds like either a bad receiver or a problem with the expansion valve. Try slowly adding gas until the sight glass clears. Once it...
  33. Replies
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    When I was in tech school I had a fellow...

    When I was in tech school I had a fellow classmate who was around 50 years old. We both went together to interview with the union to try to get into the apprenticeship program. One of the questions...
  34. We don't really talk like that. Also, most of...

    We don't really talk like that. Also, most of the bad guys up here don't own wood chippers. :eek2:
  35. http://www.pbase.com/craig_c/image/158861349/origi...

    http://www.pbase.com/craig_c/image/158861349/original.jpg


    Those are some neat ice sculptures behind you. Aren't you cold with out a jacket, though? :eek2:

    I'm just kidding, although I live...
  36. Replies
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    Yeah, good luck. There's a good chance that no...

    Yeah, good luck. There's a good chance that no matter what you do, half of the header orifices will stop feeding. Once they plug up there done and the thing will never work right. Actually, they...
  37. You make a good point. On the other hand though,...

    You make a good point. On the other hand though, some gas station employees will shut the pump off and yell at you if you are seen using a cell phone while pumping gas, because apparently they are...
  38. Replies
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    Is that a DX evaporator built into the wall, or...

    Is that a DX evaporator built into the wall, or is it chilled water, or hot water, or both?
  39. I think the part that PHM is concerned about...

    I think the part that PHM is concerned about would be the gas station part. I don't know the answer to weather or not they are allowed, but I do know that gas stations fall under a more restrictive...
  40. Replies
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    Not a good idea, unless he were to also put a...

    Not a good idea, unless he were to also put a check valve and piping to go around each drier when the liquid changes direction. If he doesn't do that, are they at least bi-directional driers?
  41. Replies
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    Keep in mind that companies hire guys like you...

    Keep in mind that companies hire guys like you because you are cheaper than someone with 20 years of experience who knows what they are doing. It sounds like you are doing good with this company and...
  42. Replies
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    In case anyone hasn't seen it, you need to watch...

    In case anyone hasn't seen it, you need to watch this Weird Al video. I defiantly think it's one of his best ones.


    https://www.youtube.com/watch?v=bwvlbJ0h35A&feature=player_detailpage
  43. Thread: Tstat wire

    by ammoniadog
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    426

    The kind that's approved for that use by the...

    The kind that's approved for that use by the authority having jurisdiction.
  44. Replies
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    Are you sure the gas line is plugged up? Before...

    Are you sure the gas line is plugged up? Before getting too crazy, you should do some tests to verify that theory. I would do something like disconnecting both ends of the pipe and rigging it up so...
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    To expand on what vstech said, you may have a...

    To expand on what vstech said, you may have a cracked heat exchanger. Take a look at the pilot when the fan turns on. If it starts waving around when the fan turns on, this could be a sign that you...
  46. The only difference between a 134a compressor and...

    The only difference between a 134a compressor and a R12 compressor would be the oil. Actually, most new compressors are coming with POE in them now no matter what, so the actual difference might...
  47. It sounds like an airflow problem. Is your...

    It sounds like an airflow problem. Is your blower wheel spinning the right direction? If so, is it running close to full load amps? Is the access door to the filter section really hard to remove...
  48. Replies
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    They are pretty good. If you're thinking about...

    They are pretty good. If you're thinking about getting one, try to find the new version thats just starting to hit the market. It is called the H10-Pro.

    There's another thread going about it on...
  49. Replies
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    I remember when I was very new to this trade i...

    I remember when I was very new to this trade i got a job with a large residential shop. They showed me how to do "clean and tunes" and sent me on my way. On my first week on the job I came upon a...
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    You did the right thing in disabling the furnace...

    You did the right thing in disabling the furnace and telling the customer the possible risks if he were to turn it back on, but you might not have needed to go as far as you did. As long as this...
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