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Type: Posts; User: beenthere

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  1. Are you sure you can't use a ducted mini split?

    Are you sure you can't use a ducted mini split?
  2. Sounds like a water source heat pump. Lots of...

    Sounds like a water source heat pump. Lots of them around here in offices and hotels.

    OP, how do you know that the rest of the building that they don't change over to your units won't need 180...
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    The furnace/air handler will move the same amount...

    The furnace/air handler will move the same amount of air, whether the higher static is in the supply or return. So operation will be the same.
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    http://www.refrigerants.com/technical_literature.a...

    http://www.refrigerants.com/technical_literature.aspx
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    It is when its due to improper sizing. Or not...

    It is when its due to improper sizing. Or not having set up the system or thermostat correctly.

    510, If you have the install manual for your thermostats, see what the CPH is set to, if set higher...
  6. Sounds like the static was checked in first stage...

    Sounds like the static was checked in first stage instead of second stage.

    Could be that the charge is not correct anymore, from a possible leak. Call the installer.
  7. Stop resetting the breaker, your only hurting the...

    Stop resetting the breaker, your only hurting the system more. Making changing out the compressor less feasible.
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    .5" is where it meets the efficiency rating. Not...

    .5" is where it meets the efficiency rating. Not the max it can work at.

    Unless your blower is a VS ECM blower, when you lower the return static, the supply static will increase.
  9. ECM and VS ECM motors have power/line voltage to...

    ECM and VS ECM motors have power/line voltage to them as long as the furnace has power to it.

    The motor not running could just as easoly be the motor is defective/broken as it could be a board...
  10. Thread: Return air

    by beenthere
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    Don't know what you mean.

    Don't know what you mean.
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    So on the coldest nights your old furnace never...

    So on the coldest nights your old furnace never shut off, just ran 24/7.
  12. Thread: Return air

    by beenthere
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    265

    Are the supplies high or low?

    Are the supplies high or low?
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    Since you said remodel instead of addition,...

    Since you said remodel instead of addition, doubtful you really needed the larger furnace.
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    As said, window units have very small coils for...

    As said, window units have very small coils for their capacity.

    And mini splits have SEER ratings well into the twenties.
  15. Have a contractor find out what is wrong for...

    Have a contractor find out what is wrong for sure, and if its the motor, let him replace it. He will be able to decide if the blades also need changed out or not.
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    Did you change out the LLFD.

    Did you change out the LLFD.
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    There are some units the inside board controls...

    There are some units the inside board controls the outside unit. Many don't though.
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    Moved to AOP. Sorry, this is not a DIY site. ...

    Moved to AOP.

    Sorry, this is not a DIY site.

    Thread closed.
  19. Thats a 4 ton condenser.

    Thats a 4 ton condenser.
  20. Replies
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    Even though the compressor reduces its capacity....

    Even though the compressor reduces its capacity. The condenser coil and evap coils are still coild sized for the second stage capacity. So they are slightly warmer than when in second stage, and...
  21. Did the tech shut the power off to the indoor...

    Did the tech shut the power off to the indoor unit before he changed the dip switch.
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    Moved to AOP.

    Moved to AOP.
  23. Sounds like waiting for the guy your dad uses, is...

    Sounds like waiting for the guy your dad uses, is your best option.
  24. Depends on the throw of the supply registers.

    Depends on the throw of the supply registers.
  25. If the refrigerant charge is not correct, or the...

    If the refrigerant charge is not correct, or the air flow set too high, you can have a much higher RH in the home than outside.

    Some of the moisture comes from you/the occupants directly, some...
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    The air may have been converted to R22 when it...

    The air may have been converted to R22 when it was originally installed. Have your tech check the metering device.
  27. Its modulating down to maintain house temp./ Yes...

    Its modulating down to maintain house temp./ Yes the board can be set to the lower suction temp to increase capacity.
  28. Backflow preventer leaves water out when system...

    Backflow preventer leaves water out when system water pressure is higher than the supply water line pressure.

    Dirt or debris can cause it to leak water out
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    Not normal. Needs checked by a good tech.

    Not normal. Needs checked by a good tech.
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    Try for correct CFM first. 2 stage units...

    Try for correct CFM first.

    2 stage units don't remove as much moisture in first stage as a single stage would in the same capacity as that first stage.

    Which is another reason why over sized 2...
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    Yes, most homes have under sized ducts for their...

    Yes, most homes have under sized ducts for their current sized A/C. What size A/C do you have now, and why is it being up sized.
  32. Use the link in my sig, and follow the...

    Use the link in my sig, and follow the instructions to apply for Pro membership.

    Don't forget to also apply for your * if you want to help home owners in the AOP forums.

    The Pro forums are...
  33. No problem. I believe vstech thought you were in...

    No problem. I believe vstech thought you were in the trade. We he said that.
  34. Tech to Tech is for tradesmen, not home owners....

    Tech to Tech is for tradesmen, not home owners. So I removed the one in Tech to Tech.
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    With a TXV. Whether its cool inside or warm, the...

    With a TXV. Whether its cool inside or warm, the SH should be the same.

    Is there a LLFD outside of the cabinet, if so, it may need changed.
  36. Most Home Warranty Companies will tell you what...

    Most Home Warranty Companies will tell you what they will pay you.
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    Moved to AOP.

    Moved to AOP.
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    Your unit is probably over sized for the house...

    Your unit is probably over sized for the house already. So finishing the basement won't require increasing its size.

    However, a basement's needs even when finished is never the same as the first...
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    Moved to AOP. And I use a CA.

    Moved to AOP.

    And I use a CA.
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    Yes, in cooling, a lower blower speed results in...

    Yes, in cooling, a lower blower speed results in a colder air temp from the evap coil.
  41. Doesn't show for me.

    Doesn't show for me.
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    Is there a LLDF outside the condenser cabinet.

    Is there a LLDF outside the condenser cabinet.
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    If you increase size from 2.5 to 3.5 tons. You'll...

    If you increase size from 2.5 to 3.5 tons. You'll end up with short cycling, and humidity problems.

    Last I knew, no one make s 3.5 ton 2 stage unit.
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    If he doesn't mind high heating bills when he...

    If he doesn't mind high heating bills when he uses the cabin.
  45. Just have an additional supply added to the hot...

    Just have an additional supply added to the hot room.
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    Sounds like your manifold valves were cracked...

    Sounds like your manifold valves were cracked open and you were bleeding pressure from your high side to your low side.
  47. If the room over cools when its over cast/cloudy...

    If the room over cools when its over cast/cloudy outside, than there is no duct work modification that will work properly. Increasing supply or return duct may get you an even temp during times when...
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    Modulating will provide the better comfort....

    Modulating will provide the better comfort. However. The increase in comfort may not be realized by you, if you never had a 2 stage furnace before.

    Is it worth it, is all dependent on how much...
  49. It was probably over charge to compensate for the...

    It was probably over charge to compensate for the restricting filter drier.
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    At 75DB and 58%RH, you have a WB of 64.8F. At...

    At 75DB and 58%RH, you have a WB of 64.8F. At 90 OD that would be a target SH of 12, at 100 OD it would be a target SH of 7.

    If the return plenum is duct board. Cut an access in it, and clean...
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