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  1. Replies
    4
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    428

    Just the grills

    Just the grills
  2. Replies
    4
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    428

    Condensating defussers

    I have a facility with several areas where the defussers are dripping during certain humid days. The typical system consists of constant volume RTU's serving individual zones. The returns are ducted...
  3. Replies
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    2,595

    I agree J P,but it seems that the controls are...

    I agree J P,but it seems that the controls are keeping the machine on, looking for dehumidification.That being said, would'nt you want to set up the controls to keep the EXV open? I've had great...
  4. Replies
    36
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    2,595

    This is all very confusing. The O.P. states that...

    This is all very confusing. The O.P. states that the E.X.V. is 100% closed when in hot gas mode.That being the case how the heck can the system dehumidify with a closed metering device? Next, what...
  5. Thread: Liebert

    by richper
    Replies
    4
    Views
    648

    Sorry D. V.L. stands for Delaware Valley Liebert.

    Sorry D. V.L. stands for Delaware Valley Liebert.
  6. Thread: Liebert

    by richper
    Replies
    4
    Views
    648

    call D. V. L. in Bristol P.A. They are very...

    call D. V. L. in Bristol P.A. They are very helpful
  7. Thread: South Jersey

    by richper
    Replies
    23
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    2,692

    He y ascj , How's your'e burner woes going?...

    He y ascj , How's your'e burner woes going? Haven't heard ,just wondering if the rtu. burners are burning .
  8. Thread: Carrier RTU

    by richper
    Replies
    13
    Views
    1,310

    Per sight rules you cant give to technical advice...

    Per sight rules you cant give to technical advice here.Please establish yourself as a pro. member and post in the wright area.Anyway,get the o.&m. manual for the unit and it will tell you the...
  9. Replies
    21
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    3,730

    The system is time initated temp. terminated. The...

    The system is time initated temp. terminated. The timer should advance thru unassisted.The 60 min. setting you speak of is a fail safe setting and should not be looked at as a primary defrost...
  10. Replies
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    871

    WHAT??????????????

    WHAT??????????????
  11. Replies
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    3,730

    Sorry if I offended you but, from your original...

    Sorry if I offended you but, from your original post it sounded like you are not very familiar with this type of system and well what J.P. said....Dito.
  12. Replies
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    1,279

    I use the Tech-Mate, D-Tech"s cheap little...

    I use the Tech-Mate, D-Tech"s cheap little sister.Works great on all cfc's,hcfc's and hfc's except I seem to have trouble with 134a,dont know why?As far as 22 and nitro.,I dont see a problem as long...
  13. Replies
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    3,730

    sounds like your'e in way over your'e head.Obtain...

    sounds like your'e in way over your'e head.Obtain a qualified repair person!!!!
  14. WHATS WRONG WITH R-414B!!!!!!!!

    Some one please tell this old tech why hot shot is sooooo bad???????
  15. Im hesitant about using 409a in an indoor hot...

    Im hesitant about using 409a in an indoor hot ambient due to it's higher head pressures
  16. so what problems are being encounterd with hot...

    so what problems are being encounterd with hot shot?
  17. Replies
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    739

    This problem may ormay not be control related.You...

    This problem may ormay not be control related.You need to do much more trouble shooting. The compressor may be off on internal overload at the time it is being called to run due to a mechanical...
  18. Thread: line sizing

    by richper
    Replies
    4
    Views
    444

    what's the Goodman's refrigerant 22 or 410? Also...

    what's the Goodman's refrigerant 22 or 410? Also the liquid line is ok but I would not use 5/8 suction,that should be 3/4 or prefered 7/8.You dont mention your'e plans for the evap. as you must...
  19. Replies
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    12,760

    Freeze stat installs after heat coil and any...

    Freeze stat installs after heat coil and any system with outdoor piping and coils shall always be protected with propolyne.. glycol.Think about it, if there is an extended power outage in the winter...
  20. Replies
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    1,265

    It sounds like a restriction of some kind going...

    It sounds like a restriction of some kind going on.I would change the metering device,liquid drier,add a suction drier, evac. to 500 mics.,and weigh in a virgin charge.
  21. Replies
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    1,280

    So I guess what I can gather from all the replies...

    So I guess what I can gather from all the replies thus far is opinions vary as well to be expected,and perhaps a form of high temp. limit may be in order here.????
  22. Replies
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    1,280

    Thanks for the replies,my concern with them being...

    Thanks for the replies,my concern with them being on all the time is about our hot summer days to come and the fact that under such low saturation temps. mass flow rate will decrease causing higher...
  23. Replies
    11
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    1,280

    Crankcase Heaters?

    I changed two compressors this week both at the same site.Same type condensing units,low temp. ..R-404A...walk in freezers...pump down systems..rooftop condensing units..lab.building..maintaining -15...
  24. Replies
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    3,288

    Yes it does have a cch and I did check it and its...

    Yes it does have a cch and I did check it and its working.
  25. Replies
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    3,288

    I agree that comment was un called for...back to...

    I agree that comment was un called for...back to subject at hand..My reason for leaving the ranco on the unit was fear of the oem non adjustable pressurestat not making the 35# cut in during a repeat...
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