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  1. Replies
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    80,000 btu 96% furnace and 3 ton a/c on a 1950 sq...

    80,000 btu 96% furnace and 3 ton a/c on a 1950 sq ft house in wny sounds oversized for both. I'm in twin cities minnesota and they would both be oversized here. Unless you have a ton of infiltration...
  2. Replies
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    2,310

    I have the Hilmor and it works great. Does...

    I have the Hilmor and it works great. Does anybody know if they make a reverse bender for it
  3. Replies
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    pictures would be helpful

    pictures would be helpful
  4. brand doesn't make very much difference. The...

    brand doesn't make very much difference. The quality of the install and competence of the installing contractor does.
  5. most people are not happy after switching from...

    most people are not happy after switching from hydronic (baseboard) heat to forced air heat. I would suggest a new smaller boiler (load calc required) and install ductless heatpumps using them in...
  6. no pricing allowed. I'm sure mods will be along...

    no pricing allowed. I'm sure mods will be along shortly to delete them
  7. ah, but unless you programmed a setback most...

    ah, but unless you programmed a setback most rarely have to ramp up much and are mainly for comfort, Never had any complaints, but have had many compliments. unfortunately condensing is not mandated...
  8. you don't need to set them up. It's all done with...

    you don't need to set them up. It's all done with the furnace board and controlled by run time. 97% furnaces start up at 35%, The longer the run time the more they will ramp up (the 80% furnaces...
  9. not a true statement if you have a york/coleman...

    not a true statement if you have a york/coleman product. They don't need the modulating thermostat to be truly modulating
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    because that blade rotating clockwise the small...

    because that blade rotating clockwise the small normally trailing edge is now leading. Ducks head/smucks head the smaller part of the blade is supposed to be the trailing edge.
  11. Replies
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    yep blades definitely on backwards. Perhaps...

    yep blades definitely on backwards. Perhaps someone reversed them because the unit is so close to the wall or they're the wrong blades
  12. see post #3 sounds like he's switching to DIY so...

    see post #3 sounds like he's switching to DIY so what's the point.
  13. Replies
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    then if you let the smoke out you'll call a...

    then if you let the smoke out you'll call a contractor

    :whistle:
  14. Replies
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    x2

    x2
  15. you may not even be able to install them legally....

    you may not even be able to install them legally. Here in Mn they wouldn't meet the commercial energy code (seer and gas AFUE).
  16. Replies
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    looks like someone overheated the sight...

    looks like someone overheated the sight glass/moisture indicator.
  17. Replies
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    I would look into a modulating gas/ variable...

    I would look into a modulating gas/ variable speed furnace with a high seer heat pump. For instance york/Coleman 60,00 BTU furnaces modulate down to a low of 21,000 BTU. So your heat pump will be...
  18. Trane voyagers have a minimum outside air...

    Trane voyagers have a minimum outside air potentiometer on the economizer board. All should be bringing in 5-25% osa. It sounds like either one or more or your RTU economizers could be bad and your...
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    1,497

    don't be surprised to see them on oem equipment...

    don't be surprised to see them on oem equipment in the near future
  20. time for another opinion

    time for another opinion
  21. Coming to an HVAC&R parts house near you

    Start mothballing your torches

    http://sporlanonline.com/ZoomLock/
    :eek2:
  22. really!!! You're suggesting this to someone on...

    really!!! You're suggesting this to someone on the AOP forum. So what if he tries your method and ruptures the diaphragm As you can see doesn't it sound like he's looking for DIY info as others have...
  23. Replies
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    5,396

    no he said osa 75 and ra 65

    no he said osa 75 and ra 65
  24. Replies
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    779

    Most air handler coils are on the intake side of...

    Most air handler coils are on the intake side of the blower so when running with just a straight drain line the water won't drain out of the pan until the blower shuts down, but if running most of...
  25. Replies
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    it's low outdoor temp and low indoor temp 65...

    it's low outdoor temp and low indoor temp 65 degrees are u kidding so supply air with a 65 degree return is probably 42-45 degrees and the coil temp usually 15 degrees lower than that =27-30 degrees...
  26. bad idea. they probably ran out of 3's and used...

    bad idea. they probably ran out of 3's and used the 5. lots of fuses = a hack or inexperienced tech. Either way, sounds like they'll be back.
  27. Replies
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    more than likely both furnace and a/c are over...

    more than likely both furnace and a/c are over sized. you will save some money by changing out the furnace plus get additional rebates, but you really need to check your house insulation and air...
  28. Replies
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    x2 on low indoor airflow and running with ra at...

    x2 on low indoor airflow and running with ra at 65 degrees
    :eek2:
  29. Replies
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    with an undersized return then you need to...

    with an undersized return then you need to install a deeper trap it will still work, but better to up size the return
  30. Replies
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    start and run windings are reversed. Try swapping...

    start and run windings are reversed. Try swapping the wires @ the run capacitor.
  31. Replies
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    most are factory installed either on one of the...

    most are factory installed either on one of the outside air dampers or just above them on the economizer frame all covered by the intake hood, so you shouldn't have to install it. That's Honeywell's...
  32. then you don't understand really how a...

    then you don't understand really how a transformer works. Your short or an unwanted ground are on the 24 volt side
  33. Why not just use your multimeter on ohms with the...

    Why not just use your multimeter on ohms with the power off? installing a temporary transformer & hooking up 1 circuit at a time is backyard diy troubleshooting.
  34. Replies
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    This still smells like either low airflow or low...

    This still smells like either low airflow or low load as circuit #1 is a full 15 tons requiring a minimum of 5,000 cfm's to prevent from freezing (normal 6,000) where as stage 2 is only 10 ton...
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    Yes it does all of the above. I'd rather not give...

    Yes it does all of the above. I'd rather not give out too much information on the AOP forum to fuel more internet sales.
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    you can also use a Honeywell Visionpro (new...

    you can also use a Honeywell Visionpro (new style) with an EIM. It doesn't have all of the bells and whistles as the Prestige, but does just as well for a lot less $
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    remember 2x rpm=4x hp so if you put in a1625 rpm...

    remember 2x rpm=4x hp
    so if you put in a1625 rpm motor it will have to be at least 3/4 hp if not 1 hp
  38. if you get a condensing boiler you can also...

    if you get a condensing boiler you can also replace your inefficient water heater with an indirect water now or later
  39. probably only used 3/8" armaflex or worse home...

    probably only used 3/8" armaflex or worse home improvement store special. It should have been 3/4" and thoroughly sealed
  40. The problem that going with a 4 ton its more than...

    The problem that going with a 4 ton its more than likely your ducts are too small. Who knows we're not there. It could be how you're using it. Are you closing off a bunch of registers thinking that...
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    Read the rules before you post. NO DIY!!!!!! ...

    Read the rules before you post.
    NO DIY!!!!!!

    call a contractor.
  42. Replies
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    disable the indoor blower and run the problem...

    disable the indoor blower and run the problem circuit. Watch the distributor tubes on the affected circuit. If everything is ok they will all be frosting. If 1 or more are not then there is your...
  43. Replies
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    dumb question, but is the evaporator fan running...

    dumb question, but is the evaporator fan running the correct direction or are the main supply dampers closed. Another thing to check does this system have smoke fire dampers or just fire dampers....
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    If you're uncomfortable with flare fittings...

    If you're uncomfortable with flare fittings there's another more expensive option that's to install a changeable core filter drier shell and it has an advantage as it usually has a pipe plug in the...
  45. Replies
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    Why not. Ductless split units have flare fittings...

    Why not. Ductless split units have flare fittings and are using R-410
  46. Replies
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    well I'm in Minnesota too. Although design is -11...

    well I'm in Minnesota too. Although design is -11 degrees lots of times it gets colder than that. How many zones 2 or 3? I also live in a split entry my house is the same size although it's older...
  47. Replies
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    thermal-zone does not make a TZ96MDV040 2 stage...

    thermal-zone does not make a TZ96MDV040 2 stage variable furnace. It is either a TZ96MDV060B30A or a
    TZ96MDV070B30A hopefully not any larger than that. That particular model goes up to 100,000 btu...
  48. Replies
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    would only work effective if ahu had both wshp...

    would only work effective if ahu had both wshp and a separate chill water coil in the blower compartment. That way for cooling just straight chilled water through the indoor coil would be utilized,...
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    No it's only compatible with a single stage non...

    No it's only compatible with a single stage non communicating a/c unit or any of Goodman communicating units including Heat Pumps. If you want to use the setup that you're talking about then you need...
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    another option is adding a ductless split heat...

    another option is adding a ductless split heat pump at a different location and leave the furnace
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