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  1. Replies
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    After 22 years living with that goodman...

    After 22 years living with that goodman equipment, how was the comfort level in your house?

    If the answer is "comfortable and no complaint" then go with that size. After all, experience always...
  2. Manufacture (I dont think) give SEER on the low...

    Manufacture (I dont think) give SEER on the low stage cooling. But according to the unit performance data, it get a lot more bang for a buck.
    It makes sense if we think about it - much larger...
  3. I forgot to mention that one of those controllers...

    I forgot to mention that one of those controllers is controlling the chilled water pump VFD. This is of course the Johnson Control VFD too. And it is "an upgraded". The old honeywell system did not...
  4. Harmony zone from Lennox is great system. But...

    Harmony zone from Lennox is great system.
    But
    1) if you ONLY do 2 zones in your house. I go with 2 stages, which csn give you the comfort for less $$
    2) That saleman should do MJ and offers you a...
  5. Replies
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    2 carrier package units ccn lead/lag

    Wonder in the ccn, if we can tie them together and do lead/lag?

    I knowthe chillers have the lead/lag logic in their ccn.

    Wonder if it is in package units.

    Thanks
  6. Replies
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    Yellow book. Oh! That't right. I forgot that You...

    Yellow book.
    Oh! That't right. I forgot that You said your company dont want to spend the money to get the problem fix.
  7. Poll: Can't have GAS FURNACE and cooling run at the...

    Can't have GAS FURNACE and cooling run at the same time for dehumidification.

    When a tech tell you "I have 30 years experience in HVAC" and does this stuff.

    Just walk away.

    What is 30 x 0 =...
  8. When you say "high humidity" - how high? Please...

    When you say "high humidity" - how high? Please provide dry buld and relative humidity %.

    When you say contractor give you option for unit sizes - Did they do the load calculation. Cuz without it,...
  9. Replies
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    699

    That's a thing of beauty

    You can't touch this!
  10. Replies
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    1,149

    I find it hard to believe that Aaon unit does not...

    I find it hard to believe that Aaon unit does not have any control module in it. You meant this unit has nothing but bare contractor and safety switches. I've seen my share of this unit.

    And if it...
  11. When do zoning, which is best in your case, go...

    When do zoning, which is best in your case, go with variable speed inside and outside with no bypass damper.
    One more note: earth grounding on all your electrical components is the MUST. They are...
  12. Jci took out the old honeywell control. That is...

    Jci took out the old honeywell control. That is an old hw box, old hw wires. The only new wires they ran was the comm wires. The old hw comm wires are not shielded.
  13. JCI team in Beaumont TX with another "world class service"

    8 months old at a nice Hamshire Fannett High School Texas.

    JCI world class of service.
  14. Replies
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    297

    They replace the existing Honeywell control for...

    They replace the existing Honeywell control for this JCI for energy saving bond.

    JCI team in Beaumont TX branch. Picture worth one word.
    I spent 45 minutes on that site and speechless.
    There is...
  15. Replies
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    297

    Rev 6.1 This site is only 8 months old. Wish I...

    Rev 6.1
    This site is only 8 months old. Wish I can post the picture showing the workmanship from world class JCI branch in Beaumont TX.
  16. Replies
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    297

    How do I find if the site is set as ADMIN rights?

    How do I find if the site is set as ADMIN rights?
  17. Replies
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    297

    What about schedule and setpoints from this front...

    What about schedule and setpoints from this front end to the Fx? Don't I need SCT to program them?
  18. Replies
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    297

    Fx PCG marrying with Metassys

    I am not too familiar with metassys. Worked with Fx Explorer on couple jobs few years back. Bottom line is I am rusty and novice.
    We are to in stall 2 Carrier package units to this site that has...
  19. Replies
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    821

    Your problem cannot be changed easily via PGD...

    Your problem cannot be changed easily via PGD interface. Typically, the setpoint is assigned as permanent memory type of variable. In your case, the programmer himself tried to be cute and upload all...
  20. Just be very careful when you do zoning....

    Just be very careful when you do zoning. Especially with the less-technological package unit, which only have fixed metering device.

    NOT every case is the same. NOT every air condition is the...
  21. No, it cannot be done.

    No, it cannot be done.
  22. Replies
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    617

    Have you changed the thermostat

    Have you changed the thermostat
  23. Replies
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    2,915

    Jesus was perfect too (according to who...

    Jesus was perfect too (according to who believes). But he got criticized all the time. So don't ask. Enjoy it if you think it is best for you.
  24. Od temp has nothing to do with your issue....

    Od temp has nothing to do with your issue. Service call
  25. Replies
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    1,567

    Must use OEM motor. Don't ask me why. Otherwise,...

    Must use OEM motor. Don't ask me why. Otherwise, you will keep replacing it yearly.
  26. That is a 5 tons blower. It is capable of moving...

    That is a 5 tons blower. It is capable of moving more than 2000 cfm. Make sure you ask the contractor to configure it to run less than 1400 cfm in your case (I like 1250 max on your case even though...
  27. By the way, according to Lennox, use approach...

    By the way, according to Lennox, use approach when ambient is warm above 65 degrees; use sub cool during cool weather belie 65 degrees AND also artificially raise the head pressure above 105...
  28. Replies
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    1,526

    I thought NO DIY site

    I thought NO DIY site
  29. You are correct. Today Lennox systems, you will...

    You are correct. Today Lennox systems, you will see that they don't have much of an subcool. Sometimes, it will surprise you.
    But, think about it a little bit. These system run at lower saturated...
  30. You don't need to have llsv on your setup. In...

    You don't need to have llsv on your setup. In facts, it is not good to gave them since it create more issues than help.

    Run the system at lower cfm than 400 since you bring in OSA.

    Try not yo...
  31. Replies
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    If you open the wall up, have same contractor out...

    If you open the wall up, have same contractor out to fix the kink cause it is not good to have it.
    $$$ is between you and your contractor.
  32. With my experience dealing with these trane...

    With my experience dealing with these trane climatuff, you MUST use trane start components. I don't know why but other start kit won't work well with it.
    2nd run your system in a/c mode normally for...
  33. Replies
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    90% of the time, it is the duct works in the...

    90% of the time, it is the duct works in the attic not properly sealed. Especially, when it is 130 degrees up there. I am sure the installers want to get the heck out of there QUICK.
  34. Replies
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    Small panel next to the LEDs located on the short...

    Small panel next to the LEDs located on the short side where the water manifolds/pipes connections are.
  35. Replies
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    2,103

    And the oil keeps disappear? Or the level is...

    And the oil keeps disappear? Or the level is still 1/2 way like you added and it still tripping?
  36. If it served you well for 20 years, then why...

    If it served you well for 20 years, then why change something different?

    Upgrade to higher SEER if you can afford.
    Stay with the technologies.
    Last, stay with Lennox.
  37. Replies
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    Your problem is at outdoor. Trane normally uses...

    Your problem is at outdoor.
    Trane normally uses x-valve on both inside and outside next to the txv. Hopefully you did not remove the old x-valve when you changed the old txv.

    By the way one-way...
  38. Replies
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    It depends on the leakage rate VS the vacuum pump...

    It depends on the leakage rate VS the vacuum pump CFM rate.

    That's why we MUST turn the pump off when it reaches the (magic number or I call it BS number) and wait for 15 to 20 minutes. If the...
  39. Replies
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    You diagnosed correctly.

    You diagnosed correctly.
  40. Replies
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    1,030

    I think you meant start winding like those old...

    I think you meant start winding like those old Trane did in the early 80's.
  41. All old version ECM (motor with 16 pins) have a...

    All old version ECM (motor with 16 pins) have a PWM on pin 10 like you said. BUT, today ECM motor no longer use PWM. They are communicating with 1 and 0.

    You may wanna scratch your idea with ECM....
  42. Replies
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    544

    Large is good. Just look out for 2 things: 1-...

    Large is good. Just look out for 2 things:
    1- noise since the hole is larger for the blower noise to travel (especially if you have gas heater in the closet).
    2- if you use 1" filter, the filter...
  43. Replies
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    2,481

    Low DT = make sure heat strips not running

    Low DT = make sure heat strips not running
  44. Replies
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    5,072

    If there is no piston, do you think the OP would...

    If there is no piston, do you think the OP would have such data?

    Think dude!

    That why i said "huh"

    Think man! Think!
  45. Replies
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    2,481

    The OP said "8 DT on indoor coil". If it is lack...

    The OP said "8 DT on indoor coil". If it is lack of air flow, then we should have high DT. Common guys.




    Oh yeah baby! Adding more freon will solve all problems relating to A/C.


    To the...
  46. Replies
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    5,072

    Huh! That is the best...

    Huh!





    That is the best question/advice so far.
  47. Replies
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    20,425

    Is that the TXV that has a nut fitting on the TXV...

    Is that the TXV that has a nut fitting on the TXV outlet, the external line has a 1/4" flare nut, BUT the liquid inlet end of the TXV is solder ????

    If it is then that is DUMBEST design I've seen....
  48. Ask your contractor to set the CFM for 600.

    Ask your contractor to set the CFM for 600.
  49. Replies
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    2,629

    Turn you ac on cool. Go outside for 30 minutes...

    Turn you ac on cool. Go outside for 30 minutes and close all doors. Crack Open you frnt door . If you feel strong cool air hitting your face while opening the door , you have bad installation of...
  50. Replies
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    1,272

    So your dewpoint in the crawl space is 69 to 70...

    So your dewpoint in the crawl space is 69 to 70 degrees. This means if any surface or object is cool at 70 degrees, you will see sweat.

    Bring a bottle of beer that is 69 degrees and put in this...
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