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Type: Posts; User: felixking

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  1. Replies
    14
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    1,338

    I vote for plugged cab tube intermittently

    I vote for plugged cab tube intermittently
  2. Replies
    4
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    807

    R-22 can be used as a holding charge vapor, but...

    R-22 can be used as a holding charge vapor, but the pressure will change according to P-T chart when it comes down to below condensing temp, it doesn't matter because it still holds a positive...
  3. Thread: Talk show

    by felixking
    Replies
    0
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    975

    Talk show

    One day, a radio talk show was on air,

    the host invited audiences to call in,

    and come up with words that can not be found in dictionaries,

    but makes sense in a sentence..

    Calls come...
  4. Replies
    6
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    676

    Gas piping question

    Just installed a furnace, ran short of a coupling, I had to use a gavalnized coupling on black iron pipe, will this cause any problem or against any code, checked gas code (Ontario), didn't find any...
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    1,157

    http://www.compfused.com/directlink/1127/

    http://www.compfused.com/directlink/1127/
  6. Thread: i'm 98%

    by felixking
    Replies
    153
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    24,189

    Mine was black hammer

    Mine was black hammer
  7. Replies
    13
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    1,438

    Thanks all for your replies It is not...

    Thanks all for your replies


    It is not something difficult to arrange heat exchange upstream the coil, but manufacturers still do the other way, so it must be for a purpose. The only explanation...
  8. Replies
    13
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    1,438

    Many rooftop units have heat exchanger located...

    Many rooftop units have heat exchanger located down stream of evp. coil, doesn't this cause condensation on heat exchanger?

    I cannt see the point why they are designed this way...

    Thanks in...
  9. Replies
    11
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    1,060

    460 V motors are commonly used for supply blower...

    460 V motors are commonly used for supply blower motor on 575 V lennox unit, are you sure the motor is 208/230?
  10. Replies
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    864

    The thumb of rule for air flow is 400 CFM/ton...

    The thumb of rule for air flow is 400 CFM/ton cooling and 200-300 CFM for heating (with exception of refrigerant heating cylce with heat pump, which requires high CFM), but what is the theoretical...
  11. Replies
    4
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    856

    CO2 collected in gas system, vent pipe corroded,...

    CO2 collected in gas system, vent pipe corroded, the reason could be:

    - heat exchanger
    - combustion air blower
    - damper control
    - flue cap
  12. if suction valve is broken, what could be the...

    if suction valve is broken, what could be the most possible cause:

    A - low pressure control not working
    B - suction pressure too low
    C - suction pressure too high
    D - high discharge pressure
  13. Replies
    18
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    1,341

    Thanks for the answers guys; but I have the...

    Thanks for the answers guys; but I have the impression that evaporative condenser fan comes on first, water pump comes after. Cooling tower works the other way: pump first and fan second. I just...
  14. Thread: Rink arena

    by felixking
    Replies
    2
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    585

    Thanks again icemeister. I am not a teacher, just...

    Thanks again icemeister. I am not a teacher, just trying to get a license in A/C & Rref.


    owe you one...
  15. Thread: Rink arena

    by felixking
    Replies
    2
    Views
    585

    This is another test question how is a ice arena...

    This is another test question
    how is a ice arena is laid?
    from bottom to top:Insulation, sleeper, pipe support, rink pipe, floor
    is this the right order?
  16. Replies
    3
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    1,072

    Thanks icemeister, you answered my question. it...

    Thanks icemeister, you answered my question.
    it should be started at the highest point no matter where that point is in the line.
  17. Replies
    11
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    1,398

    A non-balanced ported TXV, when head pressure...

    A non-balanced ported TXV, when head pressure rises, with variable ambient temperature, will the superheat rise, drop, stay the same or hunting?
  18. Replies
    18
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    1,341

    When starting evaporative condenser, fan and...

    When starting evaporative condenser, fan and water pump, which one should come on first?
  19. Replies
    1
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    685

    bleeding txv has a bleed port, ususally it is a...

    bleeding txv has a bleed port, ususally it is a internal port that you cannt see and makes no difference in piping.

    Its function is to allow the refrigerant to bleed from high side to low side to...
  20. Replies
    3
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    1,072

    When line up display cases, how do you level...

    When line up display cases, how do you level them, i.e.from the lower end, from the higher end or from the high or low middle point.

    This is question from a test I just wrote
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