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  1. Thread: Air Filter

    by twcpipes
    Replies
    7
    Views
    971

    ksspartan

    Could that not create a problem if a blower was rated for .5" and all you had left for the whole system was
    .27" without adding an additional static drop for a partial dirty filter in the cooling...
  2. Replies
    13
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    1,125

    trane

    Thank you so much. Yoiu are right, It could make a huge difference.
    tom
  3. Thread: Air Filter

    by twcpipes
    Replies
    7
    Views
    971

    ksspartan

    What is the published static pressure drop for this new filter?
  4. Replies
    13
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    1,125

    trane

    Can you expand on your statment re: duct changes.
    than you, tom
  5. Replies
    13
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    1,125

    To All re: new downflow

    Thank you for your replies. I will check Johnstone. The vent is solid from the combustion chamber through the roof. I should think that is why the fresh air can be a part of the open return air...
  6. Replies
    13
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    1,125

    Hi folks. I do primaririly commercial/industrial...

    Hi folks. I do primaririly commercial/industrial but:
    My personal downflow furnace )mobile home) needs replacing. Have a Coleman/Intertherm downflow with 3-ton coil. Unit existing is a model...
  7. Replies
    18
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    1,893

    Samp

    It is not my place to try to redirect your decisions on a new move but I will offer some facts you may or may not have thought about:

    In moving to commercial in-house, how do you intend to learn...
  8. Replies
    11
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    1,951

    jaybee

    I'll try to make this short and remembering that on the hottest days of the year you will need a minimum of subcooling and superheat for the unit to have some net refrigerantion effect and still cool...
  9. Replies
    21
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    1,537

    AND please

    When you take a FULL set of readings Monday, can you please get the compressor discharge superheat. How long ago was the compressor changed out so we know if the original charge of oil is logged in...
  10. Thread: changing CFM

    by twcpipes
    Replies
    20
    Views
    1,603

    fan rotation

    My next question was the same. The amps seem low for 115 volts but stranger things have happened.
  11. Replies
    41
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    3,323

    drrtu

    Very nice duct job!
    I have a quick additional question if I may:

    I looked at your hand drawn pic, #4 I believe, and it shows a return air fan discharge static of .5" and an outside air static of...
  12. incontrol

    Can you make up a ice water mix and check all the sensors?
    As well as your thermometer?
  13. Replies
    11
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    1,835

    bbdd1

    Do you by chance have a 2-1/2 to 3 ton indoor unit?
    Please post model numbers.
    thank you.
  14. Thread: changing CFM

    by twcpipes
    Replies
    20
    Views
    1,603

    in house worker

    One last thought to maybe help:

    Since you are comparing units can you not:

    1. Make sure the motors are the same RPM and amp draw.
    2. Measure the static across the blower on both the low unit...
  15. Thread: "A" coil size

    by twcpipes
    Replies
    20
    Views
    1,653

    deejoe

    >>Read the previous posts in full and you will know the whole story.
    Thanks anyways.<<

    Before signing off this thread I have to ask:

    1.What makes you think you can just arbitrarily run up...
  16. Thread: "A" coil size

    by twcpipes
    Replies
    20
    Views
    1,653

    deejoe

    Do you feel you will have sufficient cooling air coverage using 600cfm for 1400sq.ft.? This is open to all.
  17. Thread: changing CFM

    by twcpipes
    Replies
    20
    Views
    1,603

    in house worker

    What voltage and phase is the motor?
  18. Last post:

    intended as wit.
  19. Replies
    37
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    2,989

    jayhawker

    As one last qustion:
    Would they allow you to decrease boiler water temperatures gradually to see if you can reach a tighter balance with the a/c as well as the system?
    thanx, tom
  20. Replies
    41
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    3,323

    drrtu

    First off let me thank you for staying with us on this very important post you brought. It is one that you don't see often but brings a lot of information with it to the table for many people who can...
  21. This is...........

    Exactly why we have water treatment reps who come out and do this.
  22. Replies
    6
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    1,150

    Could it have been........

    just dry wit??
  23. Replies
    37
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    2,989

    OOPS!

    This project needs to go back to the mechanical engineer for much tighter operation parameters. He/she needs to research their load calcs and see just how much reheat this a/c needs to just get by....
  24. Replies
    41
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    3,323

    drrtu

    Can you please take the time to clarify five items for better understanding please:

    1. The 36,000 CFM figure. Is that the total cooling if ALL the boxes were open or is it, say, 80% allowing for a...
  25. Replies
    16
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    1,997

    As a last resort?

    When you establish the condenser coil is clean and the head is still high, it may be due to condenser oil logging. If the oil charge from the first compressor was left in the system, you may have it...
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