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  1. a 2 stage a/c with a variable speed blower is a...

    a 2 stage a/c with a variable speed blower is a popular set-up used by us here in nc. I suggest trane's xl20i because it has two compressors which lets you run 50% airflow in the first stage of...
  2. it IS standard practice to cut into the side of...

    it IS standard practice to cut into the side of the blower section of the furnace. Only in an upright vertical orientation though, which i'm sure is what you have. If there's room, i would ask the...
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    i win, or loose depending on how you score it. ...

    i win, or loose depending on how you score it. Heating PM on a gas pak over a pharmacy. Left my jumpers on. Melted all the medicine over the night.
  4. yeah, lets get that straight: NEVER use any line...

    yeah, lets get that straight:
    NEVER use any line flush chemical to flush an evap coil. Pure r11 would work, but no rx11 or pro flush. Pure nitrogen through the coil will work, just remove the old...
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    both - sounds like a horrible design

    both -
    sounds like a horrible design
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    youll only have that "warm" air untill the...

    youll only have that "warm" air untill the outside temp gets very cold; of course i'm sure you already know that, since you brought the idea of duel fuel. I would definitely keep the vs blower for...
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    he said his pan is cracked

    he said his pan is cracked
  8. it's not up to today's code standards. I'm...

    it's not up to today's code standards. I'm referring to the insulation that is. As far as sealing- you cant tell without removing the insulation and inspecting the duct joints? Is there a problem...
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    You really don't need a communicating a/h with...

    You really don't need a communicating a/h with the 20i. Its is designed to use conventional 24v or comm. The TAM7 is a very sophisticated air handler, and even though it isn't communicating like...
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    youll get about 2 tons of capacity if your lucky....

    youll get about 2 tons of capacity if your lucky. Also not doing your compressor lifespan any favors. 70 ft is a pretty long run for 5/16. Are you able to replace the line?
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    Here in NC, there are a lot of companies that...

    Here in NC, there are a lot of companies that have installers who do all the "mechanical" work, and then a startup technition who comes and starts the system and does a bit of configuration. My...
  12. Most major news networks are concerned about the...

    Most major news networks are concerned about the dangers that Hurricane Irene poses to large cities in the North East. In fact, CNN has posted a story about how New York, Philadelphia and New Jersey...
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    A return on each level is code in NC. Don't know...

    A return on each level is code in NC. Don't know about CA though. A single 20x30 return grill on a 5 ton is disgraceful. Its doing more than killing your efficiency, it's killing your unit.
  14. Thread: txv problems

    by pwg11386
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    677

    Still seems strange. Head pressure seems low....

    Still seems strange. Head pressure seems low. With a suction that high you'd expect to see mid eightees inside. So I'm assuming it was hot out. Is the condenser shaded?
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    If you take the panels off that unit to even look...

    If you take the panels off that unit to even look around... you are liable
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    im still a little hung up on this flu pipe. How...

    im still a little hung up on this flu pipe. How do you run pvc thru metal b-vent flashing and keep it from leaking and from looking like horse ****?
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    split the dif. Get a 95% furnace with 2 stage...

    split the dif. Get a 95% furnace with 2 stage a/c brand doesnt matter
  18. Replies
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    he probably meant to use a concentric kit for...

    he probably meant to use a concentric kit for intake and exhaust. Since he'll have to get on the roof anyways, ask him to switch out the flashing to one that is designed for pvc. (the one with a...
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    what do you mean when you say the coil is only...

    what do you mean when you say the coil is only getting about 3/4 the way up?
  20. Replies
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    i still don't understand the whole r-22 issue. ...

    i still don't understand the whole r-22 issue. Copper lines are re-used all the time. They just need to be flushed. this is a very common practice when the lines cant be replaced. Your contractor...
  21. not entirely true. I was cleaning coils the...

    not entirely true. I was cleaning coils the other day, restarted the condenser and the fan started running backwards, slow start as if it had a bad capacitior, but definatley backwards. I turned it...
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    that seems like it would work, you might have to...

    that seems like it would work, you might have to get a different t-stat though. you need one that makes a call for g during a heat call as well as cool.

    several models can be configured this way
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    it would help if you post the wiring diagrams of...

    it would help if you post the wiring diagrams of the existing furnaces. I would love to draw you a solution, but like i said, cant without existing wiring schematic
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    i'd be a bit reluctant to do business with this...

    i'd be a bit reluctant to do business with this technician. Never mix brands between indoor and outdoor unit. I would try to find someone who is confident that they can fit matching equipment in...
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    yup you got it!

    yup you got it!
  26. Replies
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    i'm sure you are cutting your pipe squarely and...

    i'm sure you are cutting your pipe squarely and cleanly like your suppose to.

    Trade secret: Put a little oil on the flare contacts before joining together. dont go crazy with it, just a little...
  27. re-wash the coils with cleaner, and rinse better

    re-wash the coils with cleaner, and rinse better
  28. Replies
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    not normal, most-likely low on charge but it...

    not normal, most-likely low on charge but it could also have a different issue. have you checked the washable filter (if it is a mini)
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    i actually do have a big BIG money idea for heat...

    i actually do have a big BIG money idea for heat pumps, but i'm afraid to talk about publicly. i really need to talk discretely with a heat pump expert. i'm a technician myself but i need to get...
  30. i'm not a fan of a fixed dat with a gas furnace. ...

    i'm not a fan of a fixed dat with a gas furnace. i always set my furnaces up to have a certain heat rise across the heat exchanger. a higher cfm setting means a lower heat rise, and a lower cfm...
  31. the rep is clueless. i wasnt saying that the...

    the rep is clueless.
    i wasnt saying that the coil was the problem, i was just curious if anybody had thought to look at it.
    no, your problem is the original hack job installation and the parade of...
  32. loads of issues there. With a leak that large in...

    loads of issues there. With a leak that large in the return, i wonder how your evap coil looks.

    just curious- why do you see it so important to note weather the techs have digital gages?
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    I live and work in central NC. Who did the...

    I live and work in central NC. Who did the install, and would you be interested in someone who knows what they are doing to come and solve the problem?
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    call the contractor back to correct the problems....

    call the contractor back to correct the problems. hvac won't work without returns. post pics too. and where are you located?
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    you said you were zoned. does that mean that you...

    you said you were zoned. does that mean that you have one system feeding both up and down stairs?

    or are you just saying that you have two zones- up and down with a system for each?
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    yeah, removable? ductless mini's are a great...

    yeah, removable?

    ductless mini's are a great solution to space issues, but i don't consider them removable.
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    sounds like you need a zoning system installed...

    sounds like you need a zoning system installed instead of that silly slave damper setup.
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    Well said.

    Well said.
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    Hate to see a zone that small on such a large...

    Hate to see a zone that small on such a large system
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    That's what I'm planning to do myself when I...

    That's what I'm planning to do myself when I replace my system. Add a return in the MB and install a 2210 and keep my stat set to circ.
  41. please read the whole thread before commenting......

    please read the whole thread before commenting... he doesn't have duct leakage issues; he was under the impression that his humidifier pulls air from the attic- which it doesn't - which we have...
  42. Not allowed to give you step by step. I would...

    Not allowed to give you step by step.

    I would recommend getting a professional to do the install.

    The new bypass mounts the same way your fan unit does. It wont need 120 volts run to it. It...
  43. i don't recommend constantly changing your...

    i don't recommend constantly changing your balance point temperature. The control is not designed to be adjusted so frequently. Also, i don't recommend that you drop the balance point any lower...
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    do you have a media filter, or some sort of whole...

    do you have a media filter, or some sort of whole house air cleaner?
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    without visiting the house and doing load...

    without visiting the house and doing load calculations there, i couldnt tell you. It does sound reasonable though. There is a huge difference between the insulation of both houses, and i'm betting...
  46. definatley not a bypass. it sounds like you've...

    definatley not a bypass. it sounds like you've had a bad install. I would steer away from the truesteam for many reasons including the price. and yes the truesteam does have a drain. If you are...
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    have you considered installing a relay to bring...

    have you considered installing a relay to bring the blower on so you can save power?
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    sounds like some diy. either that or someone...

    sounds like some diy. either that or someone needs to go back to tech school.
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    I don't understand that I can get detailed...

    I don't understand that I can get detailed charging information from the service facts of a trane or rheem and fine tune the charge in the winter but i can't for goodman. Why don't they produce...
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    hvac companies deal with dryer vent.

    hvac companies deal with dryer vent.
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