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  1. Replies
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    Or you might want to bolt a dehum unit at the...

    Or you might want to bolt a dehum unit at the return terminal for humidity control if it is necessary.
  2. Replies
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    I must also clear my statement that cooling coil...

    I must also clear my statement that cooling coil will of course remove moisture . Just not controllable. As long as you don't need to fix yr RH level within a certain range. You don't need reheat.
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    Absolutely right. I think I need to make it...

    Absolutely right. I think I need to make it clear. I'm against oversizing equipment and add reheat. I also think its not much of problem in winter as long as insulation is properly done. I'm just...
  4. Replies
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    3,193

    Absolutely right. I think I need to make it...

    Absolutely right. I think I need to make it clear. I'm against oversizing equipment and add reheat. I also think its not much of problem in winter as long as insulation is properly done. I'm just...
  5. Replies
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    3,109

    another point of view maybe? the first law...

    another point of view maybe? the first law defines the physic in OUR dimension and at the time concept we understand currently. maybe when the study of physic advance we'll discover more and see...
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    Hi I agree. What I meant is a deeper coil give...

    Hi I agree. What I meant is a deeper coil give you better contact hence better for dehum. When you have a look the coil in an operating theater AHU you'll normally find it comes with 6 rows coil. Of...
  7. Replies
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    3,193

    Hi I agree. What I meant is a deeper coil give...

    Hi I agree. What I meant is a deeper coil give you better contact hence better for dehum. When you have a look the coil in an operating theater AHU you'll normally find it comes with 6 rows coil. Of...
  8. Replies
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    3,193

    i don't think it's necessary to do this in winter...

    i don't think it's necessary to do this in winter in fact.
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    care to elaborate?

    care to elaborate?
  10. do you have any ventilation for your basement?...

    do you have any ventilation for your basement? normally a dehumidifier shouldn't be "smelly". did you check/clean the unit?
  11. Replies
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    it's actually referring to energy, heat is just...

    it's actually referring to energy, heat is just one form of energy.
  12. Replies
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    2,586

    unfortunately this always happens. i worked for a...

    unfortunately this always happens. i worked for a consulting firm. you can't imagine how many time walk on site and found out the installation does not even comply to code despite it's all specified....
  13. Replies
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    is there any reason for you to remove the...

    is there any reason for you to remove the reversing valve from the unit? the unit should always run in cooling in this equipment room, providing the monitoring equipment is working correctly.
  14. Replies
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    having the FCU in attic space shouldn't be a...

    having the FCU in attic space shouldn't be a problem providing you have the attic space properly insulated and ventilated. of course the ductwork will still need to be sealed properly with sisalation.
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    You'l need to a relatively constant flow across...

    You'l need to a relatively constant flow across coil for a DX system. You'll need to have a by-pass with motorised damper and pressure sensor from S/A to R/A so when the VAV close up the damper the...
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    There are couple issue you might need to consider...

    There are couple issue you might need to consider if you planning to utilise the AC to dehumidify your house as well. you'll need to oversize your AC in order to draw out the moisture from the supply...
  17. Replies
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    reducing the fan speed will also reduce the...

    reducing the fan speed will also reduce the static and it could affect your air quantity which in turn reducing your cooling capacity.
  18. as already mentioned by others, the HRV unit is...

    as already mentioned by others, the HRV unit is not designed to take out the humidity in basement. plus you also need to somehow get the makeup air from your house above for heat recovery but unlike...
  19. Replies
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    did you think about to install a small fan for...

    did you think about to install a small fan for ventilation. you can also install a temp. sensor in your office and interface to the fan to start runing when space temperature exceeds setpoint. you'll...
  20. Thread: AC Compressors

    by JNXMN
    Replies
    10
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    2,085

    Is your condenser vertical discharge type? if so...

    Is your condenser vertical discharge type? if so you might want to put a diverting cowl on top of it to change the discharge direction?
  21. Thread: AC Compressors

    by JNXMN
    Replies
    10
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    2,085

    so the hot air will offset the cooling and will...

    so the hot air will offset the cooling and will heat up your place gradually. Funny thing is i did once see someone stick a small condenser in their living room blowing out through a window. i wonder...
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    what is the flow rate, supply & return...

    what is the flow rate, supply & return temperature?
  23. Thread: Smoke Detector.

    by JNXMN
    Replies
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    1,741

    this will be a code requirement. maybe also for...

    this will be a code requirement. maybe also for the safety measure for fire nearby or wind effect on the smoke exhaust.
  24. Thread: Smoke Detector.

    by JNXMN
    Replies
    14
    Views
    1,741

    This is an 100% outside air unit. no return air.

    This is an 100% outside air unit. no return air.
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