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Type: Posts; User: fatboy

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  1. Replies
    9
    Views
    1,914

    Allen A

    compressors are

    Hitachi SSCA075AR/COE10735

    fatboy
  2. Replies
    9
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    1,914

    Allen A

    The upgrade is 3-4 weeks away from D/B

    School starts in 3 weeks, teachers in bldng in 1 1/2 weeks , chiller does entire 800 student school

    D/B says retrofit will take 30-40 hours

    GB at D/B...
  3. Replies
    9
    Views
    1,914

    Dunham Bush NC25-4 upgrade to Director

    Anyone performed the Dunham Bush NC25-4 controller (obsolete- originally made by Danfoss) upgrade to the Dunham Dush Director controller.

    I have one on order thru DB, curious on ease of conversion...
  4. Replies
    7
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    1,069

    could your low limit setpoint be holding the...

    could your low limit setpoint be holding the damper signal closed

    fatboy
  5. Replies
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    3,721

    try http://www.krueger-hvac.com I was on...

    try http://www.krueger-hvac.com

    I was on their site recently inquiring on a vav box

    they had info on pneaumatic,analog and ddc setup of their box's

    fatboy
  6. Replies
    9
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    1,063

    Sonc not doing much JC work anymore, but I run...

    Sonc

    not doing much JC work anymore, but I run a dual boot operating system on my laptop and I have accessed JC controllers thru both Oper Sys's ( XP Pro and 2000)

    my laptop has a serial port
    ...
  7. Thread: megging

    by fatboy
    Replies
    29
    Views
    4,362

    also never perform a megohm test on a...

    also

    never perform a megohm test on a compressor motor that is in a vacuum

    fatboy
  8. Replies
    10
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    1,058

    cost if set up properly, your P66 will come on...

    cost

    if set up properly, your P66 will come on first, then as press rises, your fan cycle controls will stage the remainder of fans and possibly back off or nearly stop your P66 fan

    I don't...
  9. Replies
    12
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    5,064

    pringlel I was under the schooling that press...

    pringlel

    I was under the schooling that press independant vav box's
    use the hi/lo pickup tubes, not press dependant

    a press independant box measures the delta P across the p/u tubes and then...
  10. Replies
    38
    Views
    2,588

    hvacrus2 you whorersalesers at Carrier already...

    hvacrus2

    you whorersalesers at Carrier already rape us(contractors) for the cost of parts

    sorry about your luck,,

    when I call you factory guys, I expect answers

    in my area we are referred...
  11. Replies
    38
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    2,588

    when you call into tech support and play the...

    when you call into tech support

    and play the phone tag game to get to the answer man

    you better have the info available that they want

    like NormC said, show you know what your attempting to...
  12. Thread: Mcquay screw

    by fatboy
    Replies
    66
    Views
    7,827

    HW Chiller Man sounds like I need to checkout...

    HW Chiller Man

    sounds like I need to checkout the Copeland screw line

    have you serviced much Hitachi screws?

    if so how do they compare to the Mcq or copeland?(got a few D/Bush chillers that...
  13. Thread: Mcquay screw

    by fatboy
    Replies
    66
    Views
    7,827

    HW Chiller Man thanks for the repost, sounds...

    HW Chiller Man

    thanks for the repost, sounds like you have this retrofit under control.

    the 10 sec on/off delay, is this to position the slide vlv for capacity?

    If I remember correct my 80t...
  14. Thread: Mcquay screw

    by fatboy
    Replies
    66
    Views
    7,827

    hw chiller man you got me curious on the...

    hw chiller man

    you got me curious on the Copeland screw replacement

    what tonnage is available on the Cope screw?

    how detailed of retrofit and will the Microtech boards control the...
  15. Replies
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    2,915

    why are you using 4 DX9100's, would not 1 do the...

    why are you using 4 DX9100's, would not 1 do the job
    (seems a lot of overkill to me to use 4)

    or would not JC unt controllers be less expensive

    fatboy
  16. Replies
    5
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    658

    controltechnician so you have alot of exp with...

    controltechnician

    so you have alot of exp with the dca's

    my question on a possible gear problem on the now defunct/out of production 35in/lb 2 position 24v ML81851008 spring return produced...
  17. Replies
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    760

    what quality of system do you want cheap- ...

    what quality of system do you want

    cheap- seperate cooling only rtu with ductwork

    moderate- mini splits but at 20x20 you could need 10+ tons/3 units

    quality- ATStulz or Liebert self...
  18. Replies
    5
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    658

    anyone having bad experiences with the ML series...

    anyone having bad experiences with the ML series direct coupled actuator?

    Hnywl now has the MS series to replace the ML series that was marketed in the 2000- late 2002

    got a few jobs that the...
  19. Replies
    5
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    1,330

    When I megohm compressors on pm or service work,...

    When I megohm compressors on pm or service work, I use the data to establish a trend and then compare these readings from pm to pm to see if the megohm value is consistent or dropping.

    other...
  20. Replies
    15
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    7,604

    service guy I guess i read the other posts and...

    service guy

    I guess i read the other posts and thought this unit was a 100%oa setup as Maxster mentioned in his post, when I reread Geo1950 's original post he does not mention 100%oaair, anyways...
  21. Replies
    15
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    7,604

    your electric unloaders are most likely...

    your electric unloaders are most likely controlled by a discharge air controller to maintain a desired supply air temp

    I would set the hot gas bypass regulator to a suction press/temp to prevent...
  22. Thread: vfd controller

    by fatboy
    Replies
    10
    Views
    1,629

    hvac3901 are not Alen Bradley and ABB to...

    hvac3901
    are not Alen Bradley and ABB to seperate manufacturers of vfd's?

    Fatboy
  23. Replies
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    1,556

    tonymjr you are going to have some press drop...

    tonymjr

    you are going to have some press drop difference between disch serv valve and the liq line- I see it all the time on larger tonnage units

    the only true press drop reading across the...
  24. Replies
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    1,582

    USMC like the others stated, more info on the...

    USMC

    like the others stated, more info on the setup would be desirable

    had a new install of a vav system where the suit/tie engineer figured a reheat indeco box on the med press air duct- only...
  25. Thread: piping question

    by fatboy
    Replies
    11
    Views
    1,922

    I agree with BobbyM cond was misordered. ...

    I agree with BobbyM

    cond was misordered.

    most OEM's don't offer a 40+tonnage unit in a single circuit anymore, I believe Mcq and AAON do, all others are custom made

    You may have to remove...
  26. Thread: Suction riser

    by fatboy
    Replies
    27
    Views
    6,367

    Dow, I understand why your asking My...

    Dow,

    I understand why your asking

    My problem is after I pipe up the job, Trane has the contractor assisted startup.

    The Trane s/u tech arrives at the site and starts questioning the piping...
  27. Thread: Suction riser

    by fatboy
    Replies
    27
    Views
    6,367

    Dow, Trane has a few articles /documents on...

    Dow,

    Trane has a few articles /documents on this out

    Checkout their Comm website under Engineered Newsletters/Archived for

    Split Systems and Interconecting...
  28. Thread: Suction riser

    by fatboy
    Replies
    27
    Views
    6,367

    all great inputs on double suction risers just...

    all great inputs on double suction risers

    just a reminder, Trane does not recommend risers/traps on their scroll cond units that unload. They recommend to downsize the riser to keep the velocity...
  29. Replies
    89
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    16,013

    I purchased Trane Rover comm 5 from my local comm...

    I purchased Trane Rover comm 5 from my local comm Trane dealer, also have prices on their comm 4 software.

    Also obtained the setup/ program manuals with the software.

    My contact a Trane in...
  30. Thread: EVERWHERE

    by fatboy
    Replies
    35
    Views
    3,432

    chomper has it their are multiple prices on...

    chomper has it

    their are multiple prices on comm 4 vs 5 and or both depending on what sftwr/hardwr you need also.

    Still a lot of differences in prices between comm offcs

    Hey Slim, I need...
  31. Thread: EVERWHERE

    by fatboy
    Replies
    35
    Views
    3,432

    I believe you need Tranes comm 4 Rover software...

    I believe you need Tranes comm 4 Rover software that includes EWARE

    be prepared to fork over $700-800 thru your local friendly Trane offc

    fatboy
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