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  1. Replies
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    X2 - people who have lots of problems with these...

    X2 - people who have lots of problems with these furnaces don't know how to install them. Don't make your problem the manufacturers.
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    Yeah, that is the one. The parts are always 10...

    Yeah, that is the one. The parts are always 10 years but the labor is the big bonus - only $50 for 10 years is awesome. Basically $50 to never have to pay for a service call for 10 years. Just make...
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    That unit can not go right to high fire. Not a...

    That unit can not go right to high fire. Not a viable option on this unit.

    The unit maintains a specific temperature rise across the heat exchanger. This can be adjusted via the ATR jumper from...
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    Right now York has a warranty special - $50 for...

    Right now York has a warranty special - $50 for 10 year parts & labor.
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    He has a point...

    He has a point...
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    It sounds like your duct is restricted. A...

    It sounds like your duct is restricted. A technician can verify duct issues with static pressure readings and/or an anenometer. Should be fairly straight forward.
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    The Luxaire 90+% modulating furnace, 80,000 BTU...

    The Luxaire 90+% modulating furnace, 80,000 BTU calls for a .15" WC blocked drain switch. You could also use a .2" as this is not the combustion air proving switch but simply the blocked drain...
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    What is the M# of the furnace?

    What is the M# of the furnace?
  9. Replies
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    Why do you have this thread in two places?

    Why do you have this thread in two places?
  10. Replies
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    377

    If you have a jumper between y1 and y2 then you...

    If you have a jumper between y1 and y2 then you don't need to turn the stat down any further. You need to make sure that you don;t have a bad economizer control that is trying to run free cooling....
  11. Pressures and line temperatures would tell us a...

    Pressures and line temperatures would tell us a lot more. Nothing can be determined, based on the small amount of information that has been provided. The next step would certainly NOT be to cut into...
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    I guess the first thing you need to know is...

    I guess the first thing you need to know is whether you have both a first and second stage call (y1 & y2), secondly do you have an economizer? Are there any faults on the board that might indicate a...
  13. Replies
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    2,693

    You didn't indicate the compressor's symptoms. Is...

    You didn't indicate the compressor's symptoms. Is it doing nothing, tripping the breaker, humming, etc.. if it is doing nothing and the windings are not open then I would be checking my wires between...
  14. Replies
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    5,328

    I'll stand by my statement that zoning is applied...

    I'll stand by my statement that zoning is applied for comfort and not savings. Depending on the situation, there could be some savings or some cost increase but it is difficult to predict and zoning...
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    These are good points to consider and if the job...

    These are good points to consider and if the job is zoned from the beginning then it can be a money saver both in terms of lower equipment & installation costs and in terms of applying a smaller unit...
  16. Replies
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    5,328

    Zoning will not change the amount of heat in the...

    Zoning will not change the amount of heat in the house that needs to be removed so the load is still the same and the amount of work required is the same. A zoning system is designed to meet...
  17. Replies
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    I know of no residential zoning products that use...

    I know of no residential zoning products that use ddc controls. Electromechanical 'actuators' (motors) simply drive open or shut. In some rare cases they use a 'floating' control which can facilitate...
  18. I'm not a carrier guy but at this point most...

    I'm not a carrier guy but at this point most manufactures sell a 'communicating system' the only benefit to you would be more efficient and quieter operation (maybe). All parts of the communicating...
  19. Replies
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    All awesome books. I read pumping away and how...

    All awesome books. I read pumping away and how come? wish I could have seen this post earlier.
  20. Replies
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    Basically you can go with electro mechanical...

    Basically you can go with electro mechanical (EWC, honeywell, ARP, etc..) or you can go with Arzel. Arzel is amazing for retro fit zoning where as the others will be time consuming and or expensive...
  21. Replies
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    If it is 13 seer then I would use and orifice....

    If it is 13 seer then I would use and orifice. Any savings you may see from the TXV will be lost when it fails (or someone misdiagnosis it) and you are paying for a new one to be installed. It has...
  22. Replies
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    910

    Most heat pumps run near their full capacity at...

    Most heat pumps run near their full capacity at 40*
    I don't know much about Michigan's weather so maybe if your cooling load is very low and they sized your heat pump for cooling (which is typical...
  23. I don't know much about window air conditioners...

    I don't know much about window air conditioners and I'm not sure how many guys on here are going to have any insight. They are just that - appliances. I live in a very old house in the city so I have...
  24. Parts and Labor? I don't think anyone is going to...

    Parts and Labor? I don't think anyone is going to come replace any parts on your window AC in the field. Are you talking more about a Ptac unit?
  25. I just bought one at Wal-mart and they were...

    I just bought one at Wal-mart and they were trying to shove a 3 year plan down my throat at the register. You must not be looking very hard...
  26. Replies
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    Also, setting your LTCO to 40 is not going to...

    Also, setting your LTCO to 40 is not going to eliminate defrost cycles. Your coil will still be below 32* and there will be more moisture in the air to accumulate on it.
  27. Replies
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    In most cases, a heat pump should be able to...

    In most cases, a heat pump should be able to deliver it's capacity down below 40 degrees.
  28. Sounds like you're squared away, then.

    Sounds like you're squared away, then.
  29. Replies
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    I think that would depend on the pressure...

    I think that would depend on the pressure generated inside the house.
  30. Replies
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    Because the electric heat package could run with...

    Because the electric heat package could run with the heat pump so you have: heat pump only above BP, heat pump & Aux heat below BP but above LTCO and you have electric only below the LTCO.

    On...
  31. Sucks to work with Rheem/Ruud, then.

    Sucks to work with Rheem/Ruud, then.
  32. If the humidistat only lights up or has a display...

    If the humidistat only lights up or has a display when it is calling for humidity(if it is the one that I'm thinking of) then it is wired incorrectly. The older stats had no display and guys wired...
  33. Replies
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    Just a couple of things to add: 1 - If you are on...

    Just a couple of things to add: 1 - If you are on a call specifically for uneven cooling, then you should be taking your time to address the issue. My response was geared toward what I commonly ran...
  34. Replies
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    I will probably get blasted for this but here...

    I will probably get blasted for this but here goes: as a service tech running 8 - 12 calls a day, it can sometimes be difficult to accurately assess and address issues like this. Of course we should...
  35. Replies
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    You say they are constant volume but then you say...

    You say they are constant volume but then you say they have VFDs? Usually the point of a VFD is to provide something other than constant volume. There are minimum airflow ratings for heating...
  36. The savings in zoning is in initial cost over the...

    The savings in zoning is in initial cost over the 2 systems. Zoning adds comfort not energy savings. 2 systems would also address comfort but not energy savings. The main difference will be in...
  37. The system does not know the outdoor humidity...

    The system does not know the outdoor humidity level. It reads the outdoor temperature. It is inadvisable to introduce too much moisture into the air when it is below a certain temperature outside...
  38. Replies
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    If you set back more than 3 degrees you will be...

    If you set back more than 3 degrees you will be running your aux/emg, coming out of set back. Even with the VP8000. Some stats will finish out the call with Aux/EMG while others will 'reverse stage'...
  39. Yes, but you will need a new metering device for...

    Yes, but you will need a new metering device for the indoor coil. You can try the piston that ships with the new outdoor unit or you can use a specified TXV which is what most guys have been doing....
  40. Replies
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    The fuse would not be the culprit for higher...

    The fuse would not be the culprit for higher energy bills. The fuse essentially limits the current to the device ti 15 amps. if for some reason you need more than 15 amps then your fuse would pop. If...
  41. Replies
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    Nate has a new policy in which the proctor of the...

    Nate has a new policy in which the proctor of the test may no longer provide a review class for the test. Major bummer because we offered something similar to what you mention. Apparently proctors...
  42. Replies
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    Listen, The NATE/ICE prep book is mostly practice...

    Listen, The NATE/ICE prep book is mostly practice questions. The questions are not worded the same way that you will find them on the test but they speak to the same points and are VERY helpful. You...
  43. Replies
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    A Guide to NATE/ICE Industry Exams is the first...

    A Guide to NATE/ICE Industry Exams is the first book that will come up if you do a search on Amazon. It is mostly practice questions and answers. I proctor these tests and it's the book that I...
  44. You will not get an AHRI rating with those...

    You will not get an AHRI rating with those matches. They may be the only coils from those manufacturers that fit your furnace. You may or may not really care, considering that the unit is already...
  45. Replies
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    I like the paste for tight stuff but a rag for...

    I like the paste for tight stuff but a rag for easier stuff like line set connections. I don't like the spray.
  46. Both options are viable although the second will...

    Both options are viable although the second will be much cheaper. I have done many installations similar the the second and have had great success. However, I am concerned with the number of...
  47. Who would be for more taxes? If you're making the...

    Who would be for more taxes? If you're making the argument that it isn't fair to tax physical business locations and not internet business then i would say that you are crabs in a bucket.
  48. Replies
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    Welcome!

    Welcome!
  49. your airflow is reduced from the required 800 cfm...

    your airflow is reduced from the required 800 cfm to 750 which is about a 7% variance. Expect your subcool to be slightly higher than the chart indicates, with the correct charge, since you are using...
  50. you don't need the pressure at the evap to get...

    you don't need the pressure at the evap to get the evaporator superheat. The pressure at the condenser service port will suffice. You only need the line temp at the evap. That being said, it probably...
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