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  1. The differentials are supposed to tell the units...

    The differentials are supposed to tell the units what to do example. With a 2 stage heat pump and a 2 stage gas furnace.

    The differentials would call for 1 stage of heat or cooling then if its...
  2. Thanks for the replies, Maybe our therms are...

    Thanks for the replies,

    Maybe our therms are different but if you go under installer settings and scroll down to the bottom of the list you may come across something that looks like this

    stg...
  3. I actually got the G71's for free on a mixup when...

    I actually got the G71's for free on a mixup when I bought the house it was supposed to be the G61's but they installed the 71's by mistake so their mistake hooked me up.


    Actually I was...
  4. Ken or Jim Im kind of in the same boat, I have...

    Ken or Jim

    Im kind of in the same boat, I have 2 G71's and 2 XP16's, and my 2 dealers don' have a clue either.



    I have the 7000's as well what do you have your Diff's set at. If you don't...
  5. lennox 7000 differentials for dual fuel/HP Need help bad....

    I had 2 different lennox dealers come out and set the settings on my Thermostats. Each time they changed a different setting and they both were like Yep this is what you need but, could not explain...
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    As far as the dip switches go, The second dealer...

    As far as the dip switches go, The second dealer came out and set them up.

    The links being cut I was just reading the manual so the first 2 on the board, I can read into 2 stage compressor and...
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    I had some issues with my g71 setup. If you...

    I had some issues with my g71 setup. If you google g71 manual you can find the service manual for reference.

    You can have the furnace set up to run in 3 stages not sure of the exact numbers but...
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    950

    well I had a premier dealer out here to set it up...

    well I had a premier dealer out here to set it up after the initial installers also a premier dealer did not have any of the dip switches set up correctly.

    So I have the install manual and went...
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    Comfortsense 7000

    Comfortsense 7000
  10. Replies
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    950

    CS 7000 Thermastat and Im reading it from the...

    CS 7000 Thermastat and Im reading it from the Furnace panel.
  11. Replies
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    950

    They did set up the temp diffs. Comfortsense...

    They did set up the temp diffs.

    Comfortsense 7000

    This is what they set it up as.

    Low Balance point 25* (my question on this one if the thermestat is reading 24* from the unit shouldn't it...
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    Need Some Help Lennox xp16's and G71's

    Ok, I will try to make this short and to the point. Built a new House spray foam, Anderson windows and 2500 Sq ft 1200 up 1200 down roughly. I had to have a premier dealer come and set them up...
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    I actually had messed up all the measurements. I...

    I actually had messed up all the measurements. I just got back and re measured.

    Return 20x10
    output 20x16 First floor


    second floor

    return 11.5x14
    output 15x15
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    return and feed size duct?

    I have a quick question for you guys. In the process of building a new home. 2 story home rougly 2500 square feet. I have 2 2 ton lennox xp 16 Hp's going in and 2 g71 furnaces as well. Here is my...
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    This problem might not be a problem at all like...

    This problem might not be a problem at all like you have said. If the house is built properly then it should be tight. I need some source of fresh air. The ERV handles that for me. Then I...
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    Yes the house has an ERV. Yes the h20 and...

    Yes the house has an ERV. Yes the h20 and furnace are all direct vent. Cracking a window does seem very simple but when its 2 degrees out side not really on the efficient side of things.
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    im more worried about the dryer, I was told it...

    im more worried about the dryer, I was told it is acouple 100 cfm during each cycle
  18. Replies
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    anybody else???

    anybody else???
  19. Replies
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    ari rating website

    hey guys quick ? when using the ari's website to determine efficiency. Is the only thing I need to know the coil and outdoor unit on a heat pump?
  20. Replies
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    522

    No the basement is not being conditioned by a...

    No the basement is not being conditioned by a third unit. It will run off the first floor unit.
  21. Replies
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    522

    heat pump sizing ?

    I had an energystar,leeds hvac designer run a manual J on my home. He came out with 1.5 ton unit for the upstairs and 2 ton unit for the downstairs. He stated once the basement was finished that...
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    My concern with just letting it dump into the...

    My concern with just letting it dump into the basement. Is that the basement is finished and you would not want to dump hot humid summer air in.
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    passive make up air vent

    I have a question for you pros, building a tight house, at least it should be. With that being said, We have designed the HVAC and going to have and ERV but with that being said. If we where to...
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    I asked him about resizing the AC system because...

    I asked him about resizing the AC system because I had changed from BATT insulation to Spray foam and asked about downsizing the units and he said that there was no need for it. I am having a manual...
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    I am not doing this, the builder has his HVAC...

    I am not doing this, the builder has his HVAC contractor doing the work. I just want to make sure I am educated when I talk to him. I don't need him trying to snow me.
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