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  1. Replies
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    Trane YCH 049 parts

    anybody have a parts manual for an old YCH049?

    I need one of the fireproof gaskets on the inducer motor housing and cant find a part #.


    thanks in advance!
  2. thanks a bunch, Jeff! I wiill give them a call.

    thanks a bunch, Jeff! I wiill give them a call.
  3. so.......what if I were to put a digital time...

    so.......what if I were to put a digital time clock in line with the condensing unit's power supply? This would leave the t/stat and evaporator running but interupt power to the condensing unit when...
  4. ok...thanks again Jeff!

    ok...thanks again Jeff!
  5. so, trying to navigate the Mitsubishi website for...

    so, trying to navigate the Mitsubishi website for a solution is, eh, a bit frustrating. I find it hard to believe that there is not a programmable stat for these systems.....

    anybody?

    thanks!
  6. Well, thanks for the quick reply. At least I can...

    Well, thanks for the quick reply. At least I can quit spinning my wheels trying to make these work. :gah:
  7. Mitsubishi t/stat compatability issue?

    Ive got a couple of old Mr. Slim units that work great.....problem is, we just re-purposed and renovated the space, and we now need a programmable t/stat.

    Units are PKH30EK and again, work great...
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    how does one service those? my answer would...

    how does one service those?

    my answer would be "someone else does it....I dunno"
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    think about it like this.........in a boiler or...

    think about it like this.........in a boiler or chiller, the Indoor Air is not being heat exchanged. :D

    heck, I've been brazing and welding motorcycle exhaust pipes since I was 14......I'm pretty...
  10. the whole neutral buss bar looks...

    the whole neutral buss bar looks cooked.........not in a good way. Wow.


    ....and brown is not a color designated for neutral.
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    looks like it was soldered while connected to a...

    looks like it was soldered while connected to a gigantic heat sink. (the valve)

    I would have soldered the male thread adapter to a short stub of pipe before threading it into the valve......that...
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    Got it. thanks for the lesson!

    Got it.

    thanks for the lesson!
  13. Replies
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    Thanks all.....definitely some good points to...

    Thanks all.....definitely some good points to ponder.

    I was considering this:

    1. to keep in my back pocket in the event of a failure, on a temporary basis (as I have a few of these units), and...
  14. Replies
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    swapping stages in a RTU

    Carrier HJQ

    Stage 1 compressor is LOUD......to the point of people on the ground are wondering (and asking) wth is going on up on the roof!)

    Unit works just fine, the offending comp. amps out...
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    I'm in much the same situation. We have 3...

    I'm in much the same situation. We have 3 technicians, but we are multi-trade. So, I (we) do the maintenance, meaning filters, condensate drains, coil washing, BELTS, etc. I do the basic...
  16. thanks for all the discussion. While it is not...

    thanks for all the discussion. While it is not technically in a school, it is in a large administrative educational facility.

    None of my equipment meet the threshold (50#)...........aw, heck,...
  17. Closed loop......but I could pull a sample. Had...

    Closed loop......but I could pull a sample. Had not thought of that, as its a huge loop with 70+ units on it.....

    thanks!
  18. thanks all. the delay is because of the fiscal...

    thanks all.

    the delay is because of the fiscal year thing, getting PO's right now is even more complicated because we just went live on a new purchasing system....yes, on the same day as the...
  19. How much leakage requires removal from service.....R-22 WSHP

    Is there some threshold at which a leaking unit must be removed from service?

    I have a water source heat pump which is leaking its charge (into the water, we presume as we cannot find a leak...
  20. Thread: Why?

    by Mikeylikesit
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    Why? fuses be 'spensive, man! Criminal,...

    Why?

    fuses be 'spensive, man!


    Criminal, is what that should be. Yikes.
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    Anybody still using INSIGHT3.6?

    IF so, do you know if it will run on a Windows 7 PC?

    (our IT dept has ceased supporting XP, which means we lose the ability to run backups, remote access, etc)

    I need to determine if I really...
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    well DUH he's gonna smell gas cause he didn't use...

    well DUH he's gonna smell gas cause he didn't use enough pipe dope on that last black iron to condensate pan fitting!


    wow. just, wow.
  23. Replies
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    yikes. THAT has to be the most potentially...

    yikes. THAT has to be the most potentially lethal DIY work around I've ever heard of.
  24. Replies
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    on second thought, nah, I wont brag about our...

    on second thought, nah, I wont brag about our weather.....nope. :)
  25. Replies
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    Air Filter Media Frames

    I am looking to replace a bunch of our pre-filter bank frames...they are the plastic frame that you lay a piece of filter media over, and pinch the media into the slots with a putty knife. The...
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    I had similar symptoms on a Carrier 50 HJQ. ...

    I had similar symptoms on a Carrier 50 HJQ. after checking, double checking, and pulling my hair for about half an hour, the light bulb came on.

    Unit has an economizer....(other side of the...
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    yeah, but what in the world is that gear shifter...

    yeah, but what in the world is that gear shifter boot doing up there? LOL


    that wont last long......
  28. Replies
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    those are alot more reliable than some of the...

    those are alot more reliable than some of the fancier systems out there....kinda like the John Madden Electrical Theory principle.....



    .,......just sayin. :D
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    tar paper is rated at what, r-0.5? wow.

    tar paper is rated at what, r-0.5?

    wow.
  30. Replies
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    thats the dual purpose relief and seismic...

    thats the dual purpose relief and seismic restraint device...... :rolleyes:
  31. x10!

    x10!
  32. Replies
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    wow.....how big is this building? That is...

    wow.....how big is this building?

    That is alot of RTU's!
  33. Replies
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    x10

    x10
  34. Replies
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    but....but....but.....I AM NOT FINISHED!

    but....but....but.....I AM NOT FINISHED!
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    14 years ago, we replaced a 250t centrifugal with...

    14 years ago, we replaced a 250t centrifugal with (2) 120t screws. I cannot count the number of times I have thanked our good Lord above for providing me the courage to stand up to the bean...
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    thanks for all the input

    this might be a good time to begin the painful conversion to DDC, eh?

    Buildings are 60 years old, and I think a reducting with new VAV's is the proper way to renovate this space. Hope I can...
  37. Replies
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    "ganging" pneumatic t-stats

    I am about to open up a bunch of office space into one large area, as opposed to smaller rooms and offices. This 3000 sf area is served by 8 or 9 VAV's...and I want to be sure that the t-stats dont...
  38. Replies
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    the equipment operator?

    the equipment operator?
  39. Replies
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    but I still see some copper. amateurs.

    but I still see some copper.


    amateurs.
  40. I once worked for a guy who had a pretty darn...

    I once worked for a guy who had a pretty darn profitable woodshop. He had some exclusive contract to make walnut plaques for the navy, those ones with the insignias and squadron logos, and such. ...
  41. he gets an F for poorly wrapped acorn splices!

    he gets an F for poorly wrapped acorn splices!
  42. Replies
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    perfect case of "a little knowledge is...

    perfect case of "a little knowledge is dangerous"!


    do you think his homeowners insurance will accept liability? :whistle:
  43. Replies
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    few years back.....first trouble call on our new...

    few years back.....first trouble call on our new fleet of RTU's.

    noticed the suction line heavily frosted....so, of course, proceeded to hang the guages.

    I managed to stop the condenser fan,...
  44. Replies
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    "we want our heat, and we want it NOW!" :D ...

    "we want our heat, and we want it NOW!" :D :whistle:
  45. Replies
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    looks like some of the "zip-tie" brand duct...

    looks like some of the "zip-tie" brand duct dampers I have come across....:gah:
  46. Replies
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    oh, believe me, its NOT just hospitals! my...

    oh, believe me, its NOT just hospitals!

    my WSHP units are buried so deep in ductwork and plumbing, I can barely get to the access panels.

    I have had to drop units from the ceiling to change...
  47. Replies
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    my first time at band camp.......

    My first VFD failure was in a fan room, water heater line went bad over a weekend.

    35' away. you could NOT have placed that little pinhole any more accurately to spray directly at the drive....
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    I would think that code requires a 5 legged...

    I would think that code requires a 5 legged table..... :whistle:
  49. Replies
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    thanks for the replies. Drive stopped to...

    thanks for the replies.

    Drive stopped to change parameters, check. (we use a jumper wire on terminals 1 to 11 to command drive to run forward)

    changing the other controls is not really an...
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    He is about to get a shocking phone call........

    He is about to get a shocking phone call..... :whistle:
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