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  1. Replies
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    They said it was geared to much towards...

    They said it was geared to much towards residential. We do all commercial work. I think the you could apply this course to commercial work. Especially since a lot of commercial buildings, like small...
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    I'm imagining the DX coil and CHWC in series and...

    I'm imagining the DX coil and CHWC in series and it sounds like the CHWC is first.

    I really wish I was there to see this system. Sounds like a nice one to correct all the problems and feel like a...
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    I tried to get my company to take the...

    I tried to get my company to take the CO/Combustion course. They think it is not worth it :gah:
  4. Replies
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    1,106

    Was curious what this was after reading post....

    Was curious what this was after reading post. Holly cow!!!! I'm one to invest in tools but that is one heavy price tag. I will have to look more into it before even considering buying one.

    For you...
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    I have been trying to get my company to do a...

    I have been trying to get my company to do a business membership forever. No such luck.
  6. Replies
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    1,490

    You have a 50# suction with the hot gas...

    You have a 50# suction with the hot gas bypassing? Where is it piped? To the TXV distributor or to the suction line after the coils?

    I think it would be in you best interest to draw out a detailed...
  7. Replies
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    1,490

    Are all the evaporator coils clean? How is the...

    Are all the evaporator coils clean? How is the airflow? 50 psig seems low. I agree with needing to know what type of unloaders. Are they pressure or electric?

    I'm interested in how this turns out...
  8. Just curious if you guys would have piped this...

    Just curious if you guys would have piped this with black pipe and threaded nipples instead of copper.

    Good luck changing put a circ pump.

    Looks like a damn mess.

    Is there a backdraft...
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    190

    Got them thanks again

    Got them thanks again
  10. Replies
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    190

    Emailed you rundawg. Thanks for the help. I'll...

    Emailed you rundawg. Thanks for the help. I'll get an email in my profile. I thought I posted in the correct section I'll figure it out one day.
  11. Thread: Cold weather

    by Push It
    Replies
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    1,927

    I think around -5*F I was out for a call once...

    I think around -5*F

    I was out for a call once in a boiler room, all the pipes were frozen, and my feet were so cold it hurt to walk. Had to be like 10*F in there. Landlord took out windows for...
  12. Replies
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    190

    RUUD manual needed

    M# UGPN-10EAMER

    Anyone have the IO&M manual on this unit? My sisters house is tripping the limit and I believe I have an airflow issue. TESP= .61"WC

    Thanks
  13. Replies
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    Can someone explain to me how water gets in a gas...

    Can someone explain to me how water gets in a gas line. Does this just happen in underground lines? I have never seen of or heard of this.

    And with an 1-1/2 line I'd second getting someone to...
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    296

    Just thought I'd post a follow-up incase anyone...

    Just thought I'd post a follow-up incase anyone runs into this in the future. I talked with Testo and had to hold down the up key then plug the analyzer into the computer. After that I was able to...
  15. Thread: Travel Pay

    by Push It
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    939

    You know I never thought of that! I think next...

    You know I never thought of that! I think next opportunity I get I am going to bill that. :grin2:

    But if we are heading to do a PM there is no way in hell our office is paying us the travel.
  16. Thread: Travel Pay

    by Push It
    Replies
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    939

    We do not get paid to travel from our homes to...

    We do not get paid to travel from our homes to the first call or from the last call to our home. This could easily add up. I currently have a short drive so it does not bother me. But if it was...
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    Testo 320 Firmware Update Problems

    Has anyone done the firmware update on their Testo 320? I needed to update it after changing the oxygen sensor that failed under warranty.

    I am having a problem. I have V1.03. After I did the...
  18. Replies
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    167

    Electronic Aquastat Help

    Honeywell L7148 F 1042

    Does anyone know if the sensor on this control has a resistance or is just a switch? The wiring diagram on the side of the boiler shows it as switch.

    Found a PDF on the...
  19. Replies
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    1,008

    This is interesting, never saw this. Do not do...

    This is interesting, never saw this. Do not do much residential. Does it usually get hot like he has mentioned?
  20. Replies
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    1,336

    Doesn't sound all that bad......they didn't burn...

    Doesn't sound all that bad......they didn't burn the place down at least! Did any of those guys hurt themselves or anyone else?
  21. Replies
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    1,336

    Were both winding open or just the primary?

    Were both winding open or just the primary?
  22. Replies
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    1,336

    Doing the math I seem to be wrong here. You...

    Doing the math I seem to be wrong here. You actually have less current in the primary. Perhaps this is why the primary winding ma have thinner wire if it does.

    Time Builder seems to be...
  23. Replies
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    1,336

    Just wondering how many guys install a fuse or...

    Just wondering how many guys install a fuse or one with a breaker when they replace a failed one. I always do if it will fit.
  24. Thread: Refractometer

    by Push It
    Replies
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    858

    I use a Misco 7084VP. Really no complaints. But I...

    I use a Misco 7084VP. Really no complaints. But I haave never used any other one so I have nothing to compare it to.
  25. Replies
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    I believe it is because the primary side will...

    I believe it is because the primary side will have more current due to having more winding. More of a guess but that seems to make sense to me.
  26. Replies
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    I agree with this totally. I have the feeling we...

    I agree with this totally. I have the feeling we will find the HGBV failed close to wide open. The valve in this unit is an electric stepper valve. They do seem to fail a lot. Gravity may be onto...
  27. Replies
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    That 40% is for the whole unit. Assuming the...

    That 40% is for the whole unit.

    Assuming the Cooling% in the Status menu is the same as the percentage of heat load on the unit compared to it's nominal load, I was referring to knowing how the...
  28. Replies
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    2,627

    If he makes the return larger it will slow down...

    If he makes the return larger it will slow down his velocity, no? The water is dripping off the coil before it can run down far enough to drip into the drain pan. The coil is a draw through. Maybe I...
  29. Replies
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    We installed the first system in our state about...

    We installed the first system in our state about maybe 10 years ago, maybe less. The compressors blew up, and Liebert sent out an updated chip to put in the micro processor with the new compressors....
  30. Replies
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    Are you saying that some disagree that it is...

    Are you saying that some disagree that it is worth while to look inside, or that once inside they disagree on failure type and cause? Who in their right mind would not think it is a good idea to look...
  31. Replies
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    Flood back and the HGBV are high on my list. ...

    Flood back and the HGBV are high on my list.

    It does have a liquid line sol. valve. But I believe if it is leaking by the unit will throw an alarm for compressor short cycling. There has been no...
  32. Replies
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    That's a good thought. I'm just not sure if it...

    That's a good thought. I'm just not sure if it would make a difference. The refrigerant flow is so fast I can't see how the position would effect it. Unless it was mounted so the valve was on the...
  33. Replies
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    Sorry for the delay guys, been busy. Yeah it's...

    Sorry for the delay guys, been busy.

    Yeah it's nice how they slide out. I always have those gaskets on hand. I seem to have to replace the discharge service valve gaskets on everyone I run into....
  34. Replies
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    I have found bad stepper motors and bad boards...

    I have found bad stepper motors and bad boards causing the HGBVs to stay open.
    Do you think the capacity of the BGBV will overcome the TXVs ability to control the superheat?
    We have enough room at...
  35. Replies
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    There is a oil equalizing line. It is only 3/8...

    There is a oil equalizing line. It is only 3/8 unfortunately but it is there. It has a 1/4 schraider on it.
  36. Replies
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    That's a good idea, but you won't be able to...

    That's a good idea, but you won't be able to clean a strainer out if it has one. I am wondering if I can call the TXV manufacture to find this out. I have seen some TXVs have screens and some not.
  37. Replies
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    This is a Liebert XDC system. No compressors have...

    This is a Liebert XDC system. No compressors have ever been replaced.

    This system was installed and started about 5-6 years ago by another contractor who is reputable. I believe the job required...
  38. Replies
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    Absolutely what's left of the bearing. Do you...

    Absolutely what's left of the bearing. Do you have any thought on if the paste/sludge is just from the silver mixing with the oil, or from the oil itself turning to sludge then also mixing with the...
  39. Replies
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    Tandem Copeland Compressor Failure/POE Oil

    Guys

    Looking some some opinions, expeirences, and knoweldge.

    We lost a set of tandem Copeland scrolls a few weeks back. One of the compressors was very loud and not pumping well. When we...
  40. Replies
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    1,756

    Never knew that was how you trapped a blow...

    Never knew that was how you trapped a blow through unit. I have about 4 RTUs to re-trap now at my site. Good spring work.
  41. Hey man by the looks of it they did not tape up...

    Hey man by the looks of it they did not tape up the unused fan speed wires. If this is similar to my Trane units you will have voltage to ground at those wires. I would tape them up if that is the...
  42. Replies
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    Could you get a local duct cleaning company to...

    Could you get a local duct cleaning company to run a camera down the duct?
  43. Replies
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    391

    I looked at that not more than a couple months...

    I looked at that not more than a couple months ago. I need them to get closer to me. My company will never send me to training that includes flying somewhere. It's a stretch just because it s a few...
  44. Replies
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    849

    I love the tending ability. Looks like a good...

    I love the tending ability. Looks like a good tool.

    But personally I like calculating the SH and SC on my own. Don't really know why. Just feel like I am understanding things better.

    To bad it...
  45. Replies
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    391

    Good article. Simple and to the point with the...

    Good article. Simple and to the point with the time he is given.

    I'm interested in hearing who has taken some type of airflow training and what they took.

    Any service tech TAB or NEBB...
  46. Replies
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    2,627

    Try to get a cut sheet up if the unit. Or at...

    Try to get a cut sheet up if the unit. Or at least post the M#. May help
  47. Replies
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    Has to be slanted. He said it drips off it worse...

    Has to be slanted. He said it drips off it worse when the unit shuts down.
  48. Replies
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    1,284

    When you say "sweated" you mean brazed not soft...

    When you say "sweated" you mean brazed not soft soldered...correct?
  49. Replies
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    So the water only drips outside the pan when the...

    So the water only drips outside the pan when the fan shuts off? As long as it is running all condensate runs down the coil find and into the drain pan?

    The coils are slanted in the unit?

    It's...
  50. Replies
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    You lost me here. If it is dropping off the coil...

    You lost me here. If it is dropping off the coil as it should is it not dropping into the drain pan? If it is not I cannot imagine that it is not being blown off the coil.

    I go with a X3 on...
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