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  1. Replies
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    1,917

    LightGuy48 I seen the same problem with the...

    LightGuy48

    I seen the same problem with the Trane units, for example if circuit A is off on loss of charge error both A & B circuits shut off, stupid software engineering if you ask me and haven't...
  2. Replies
    34
    Views
    3,989

    I am amazed no one has mentioned setting the...

    I am amazed no one has mentioned setting the proper tension with the tool for the belts,something we do on all the large hvac systems we work on.
  3. Replies
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    9,197

    Have installed a few 399 models in the past year,...

    Have installed a few 399 models in the past year, and to date not one problem.
  4. Thread: cfm's in a ton

    by CENAIR
    Replies
    23
    Views
    65,401

    Most Heatpump Systems are designed @ 450 CFM/P...

    Most Heatpump Systems are designed @ 450 CFM/P Ton as the Heating side is all sensible load and there is a benifiet with the higher CFM for Heating the space, typical Cooling Systems are usually at a...
  5. Replies
    4
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    1,657

    T2 I know this is an old thread but your Delta...

    T2

    I know this is an old thread but your Delta across the Barrell is too low if only 2psi, look at the pumps, valves etc. as thw water flow is to low.
  6. Replies
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    32,559

    I put some of the first few in New England and...

    I put some of the first few in New England and went through all the early problems, we had a project we went to every day just to reset and start it with all the errors and alarms, had Carriers...
  7. Replies
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    32,559

    This Carrier product 30 GT is probably one of...

    This Carrier product 30 GT is probably one of the worst Chillers ever produced with all the problems with sensors and EXV, we service over 50 of them under contract and compared to other brands like...
  8. Replies
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    3,806

    Gates has had problems with so called matched...

    Gates has had problems with so called matched sets, and we have had the same due to the Mexico plant as I am told. The so called matched sets are not the same as problems with the plant with the...
  9. Thread: RTAC

    by CENAIR
    Replies
    17
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    2,605

    I have had a few that had hairline cracks in the...

    I have had a few that had hairline cracks in the stem for the solenoid like the one shown on other units, but none on the RTAC.

    R-134A is a little tougher than other refrigerants to find leaks on...
  10. Thread: RTAC

    by CENAIR
    Replies
    17
    Views
    2,605

    always looking No trace of oil anywere, not...

    always looking

    No trace of oil anywere, not even a small leak trace. What vlave are you refering too?
  11. Thread: RTAC

    by CENAIR
    Replies
    17
    Views
    2,605

    cw0682 I have a RTAC225 that to just lost...

    cw0682

    I have a RTAC225 that to just lost about 413lbs on circuit-A, leak tested it with 30# of 134-A and brought pressure to 70 psig with nitrogen, went through system 5 times with electronic...
  12. Replies
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    671

    DaveCR Thanks for the solution, it worked...

    DaveCR

    Thanks for the solution, it worked great after I zoomed in and made the image very large on the screen, then used Adope to Snapshot to copy the PDF file and pasted in Visio.

    Worked...
  13. Replies
    3
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    671

    I recall used something to take a photo of it and...

    I recall used something to take a photo of it and had to set the resolution to high or something like that.But can't rember how it was done.

    Paul R.
  14. Replies
    3
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    671

    VISIO PDF SHARPENING IMAGE

    I am trying to bring into a Visio Drawing a PDF, using the Snapshot from the PDF Tools Menu and the image is not sharp enough. I know there is a way to sharpen it up and have down it before, but...
  15. Replies
    6
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    787

    orion242 Thanks, that works too, on Visio...

    orion242

    Thanks, that works too, on Visio 2007 you can do it from the top menu by clicking Format then Protection. I tried it with your method and it pops up the same menu and locks it as well. ...
  16. Replies
    6
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    787

    orion242 No I haven't tried that, not sure on...

    orion242

    No I haven't tried that, not sure on how? Any advice would be great. I was able to to keep the PDF locked by the protection feature.
  17. Replies
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    787

    doubleduece Thanks but that wasn't it, I...

    doubleduece

    Thanks but that wasn't it, I fiquered it out yesterday as It is under the Format Tab and then set Protection to lock it.

    Paul R.
  18. Replies
    6
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    787

    Visio 2007 Locking Drawing

    Imported a PDF to Visio 2007 to draw a controls diagram, after adding some symbols and lines it seems the entire pdf moves and isn't locked, I have tried to lock the the PDF and create a new layer...
  19. Replies
    166
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    7,504

    NRGTECH2, I had all the same questions and...

    NRGTECH2,

    I had all the same questions and thoughts years ago before selecting Johnson Controls to use on our hvac projects for DDC Controls. Some considerations for me where a product that was...
  20. Replies
    8
    Views
    1,319

    The equipment manufacturer nameplate or product...

    The equipment manufacturer nameplate or product data will usually show (MOCP)
    " Maximum Over Current Protection" for the unit, and is the highest fuse or circuit breaker that should be used for the...
  21. Joey791, Since you didn't specifie fuel type...

    Joey791,

    Since you didn't specifie fuel type I am guessing LP, sooting is usually caused by excess LP fuel and running rich, which can be from incorrect manifold pressure, too low combustion air,...
  22. Replies
    29
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    2,378

    WhoIsThat, You Posted "In that case the...

    WhoIsThat,

    You Posted

    "In that case the fuse is set to blow way before the secondary voltage goes as low as 12vac."

    Low voltage doesn't trip fuses, the amperage does. If something is...
  23. Replies
    29
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    2,378

    cooter2506, Just put in a Transformer with a...

    cooter2506,

    Just put in a Transformer with a built in circuit breaker that will trip open the 24v side and as others said, you need to look for the cause for the overload situation that is taking...
  24. Thread: DX 9100 Bad

    by CENAIR
    Replies
    17
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    1,264

    moutainman, DX-9100 never die and live forever...

    moutainman,

    DX-9100 never die and live forever unless techs start doing things shall we say incorrect, all you have is a bad sensor and the alarm light is normal. What is the "Bad Temp" reading ? ...
  25. Replies
    22
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    5,587

    Catpower, I knew that but didn't know the...

    Catpower,

    I knew that but didn't know the year on Chiller wasn't specific, anyway just listed the safeway and didn't want to give the guy his first "Oil Shower", seemed new to this type of system...
  26. Replies
    22
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    5,587

    thegoodlistner I agree with pulsing doesn't...

    thegoodlistner

    I agree with pulsing doesn't mean its moving too, and have had the same failures for both EXV and Control Board, but it is a first basic service check that wasn't done. Some of the...
  27. Replies
    22
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    5,587

    philly 420 What error code do you get for the...

    philly 420

    What error code do you get for the lockout? The way you checked them is fine, but a lot of work pumping down and pulling the, for the evap sensor just run the unit and note the suction...
  28. Replies
    22
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    5,587

    philly420, First what is the error code you...

    philly420,

    First what is the error code you are getting for the 30GT? And need some info to assist.

    - Most common problems for the EXV on this Chiller is sensor failures for either T-5...
  29. Replies
    6
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    789

    hvacrtech, You really can't get to the lines!...

    hvacrtech,

    You really can't get to the lines! is that something I should expect after getting a job in the hvac field?

    Yes this is completly normal in the industry, Engineers can squeeze 10...
  30. Thread: Low tower temp

    by CENAIR
    Replies
    7
    Views
    1,025

    icecoldtech, This sounds like a building with...

    icecoldtech,

    This sounds like a building with all watersource heatumps and and evaporative cooling tower, and usually the building loop water temps are 60-90 degrees, can't be a chilled water...
  31. Replies
    16
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    5,815

    Shut of heat and cool at t-stat, then run just...

    Shut of heat and cool at t-stat, then run just the fan motor for a while and see if you get the noise?

    If no noise running just the fan, then switch the heat on and see if you get the noise? I...
  32. Thread: Machine rooms

    by CENAIR
    Replies
    17
    Views
    1,251

    We use nitogen/CO-2 or Compressed air and blow...

    We use nitogen/CO-2 or Compressed air and blow out the condensers opposite the way the air flows through the condenser, use a wet towel drapped over the inlet side so all the dust doesn't go...
  33. Replies
    64
    Views
    3,587

    My H-10 finds leaks all my other leak detectors...

    My H-10 finds leaks all my other leak detectors can't, and is the best in the industry and I have tried and bought just about all. Just be careful when near any sweating pipes or moisture you don't...
  34. Randy, A good strategy picking up condenser...

    Randy,

    A good strategy picking up condenser heat from chillers normally sent towers, and saves lots of energy.

    I have installed lot of fluid coolers in our cold Northeast climate for the large...
  35. Replies
    6
    Views
    920

    leander311, Sounds like you are getting...

    leander311,

    Sounds like you are getting confused with the ratings by the manufacturer that show sensible/latent capacities for the unit, you said your load was 15mbh and I assume that is the total...
  36. Thread: Any Idea?????

    by CENAIR
    Replies
    4
    Views
    599

    elderjoy, After recovering any refrigerant...

    elderjoy,

    After recovering any refrigerant left in any, we clean up chillers this way to get rid of the moisture, but it is time consuming and labor intense. Not sure on the tonnage of the unit,...
  37. Replies
    20
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    1,520

    hvaclogic, The ground would still exist in the...

    hvaclogic,

    The ground would still exist in the home with the existing wiring and no electric power from the utilitie, sounded to me like he was running the electric hot water and other stuff in...
  38. scalar, Liebert makes the best equipment for...

    scalar,

    Liebert makes the best equipment for Server room type application, and also has what is called a dry cooler option and works great, simply speaking the compressor is shut off in cold...
  39. Replies
    20
    Views
    1,520

    etap, Sounds like you had an electric hot...

    etap,

    Sounds like you had an electric hot water heater that was maxing out the generator, I would just shut the power of to the hot water, and you should have plenty of poer to operate the...
  40. Replies
    4
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    616

    Mike Paul R. This is NOT a DIY site. ...

    Mike


    Paul R.


    This is NOT a DIY site.

    Olease read the rules, Thank you.
  41. Thread: Clicking Sound

    by CENAIR
    Replies
    3
    Views
    403

    I agree with Shophound, get a licensed service...

    I agree with Shophound, get a licensed service tech experienced with that brand, and does sound like delayed ignition which is dangereous, caused by gaf fuel entering the heater and not igniting as...
  42. Andy, Don't by a Manometer yet, just run the...

    Andy,

    Don't by a Manometer yet, just run the system in heating with the gas operating (no-heatpump) and measure the return air temp and supply air temp above the cooling coil and furnace and see...
  43. Replies
    20
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    1,294

    JPSMITH, Honeywell did a study many years ago...

    JPSMITH,

    Honeywell did a study many years ago and found 10 degrees in so far as dropping the temp in heating mode provided the best savings. Not sure what area of the country it was done in for...
  44. Andy. I forgot to mention on your post -(unit...

    Andy.

    I forgot to mention on your post -(unit will not trip out when in cooling cycle and does a very nice job of maintaining temperature in the house) this is normal as the outdoor unit moves a...
  45. Andy, If the system is two years old as you...

    Andy,


    If the system is two years old as you said, and hasn't been serviced or touched recently, and now all of a sudden trips on high head pressure could be a few things and you mentioned you...
  46. Replies
    3
    Views
    781

    Johnson 350 can do it. ...

    Johnson 350 can do it.

    http://cgproducts.johnsoncontrols.com//CAT_PDF/1922610.PDF

    Paul R.
  47. Thread: Will this work?

    by CENAIR
    Replies
    15
    Views
    940

    GBFROMSD, ...

    GBFROMSD,

    --------------------------------------------------------------------------------

    I have a small room served by a VAV with hot water reheat that gets way
    too much air to offset two...
  48. The air in the ducts (when the system isn't...

    The air in the ducts (when the system isn't running)in the attic is cooling off, as it cools it starts to move through the duct and a slight airflow can be felt at the supply air grills, warm air in...
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