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  1. Replies
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    The combustion analysis process measures the...

    The combustion analysis process measures the contents of the vent gases - oxygen, carbon monoxide, temperature, and confirms that the appliance is actually venting (not just that it CAN vent.) Since...
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    A combustion analysis is likely to be helpful.

    A combustion analysis is likely to be helpful.
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    In fact, the Prestige doesn't have to be...

    In fact, the Prestige doesn't have to be connected to the equipment 24V source. It's connection to the EIM is wireless so you could use a separate transformer at the t'stat to make it work.
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    If the wireless t'stat has Redlink you can use a...

    If the wireless t'stat has Redlink you can use a Gateway for WiFi.
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    That looks nice. I consider the job a big...

    That looks nice. I consider the job a big improvement o Ed what was there. Good catch finding the other air filter.
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    I donít think Iíve ever seen a pitted capacitor.

    I donít think Iíve ever seen a pitted capacitor.
  7. Gas pressure readings don’t sound right and...

    Gas pressure readings don’t sound right and dropping O2 is a big concern. What’s the combustion air source? Draft measurements?
  8. Be very cautious of the kerosene heater. They...

    Be very cautious of the kerosene heater. They produce carbon monoxide. You should ventilate the space where it is used.
    Store bought CO alarms have a 25% failure rate and a high threshold. Donít...
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    Blower door test to pressurize the house and use...

    Blower door test to pressurize the house and use a smoke generator. You’ll be surprised what you can find.
  10. It was tested by reading the amperage, which was...

    It was tested by reading the amperage, which was in tenths of an ampere, by making a coil of 10 loops of #18 gauge wire to get a reading high enough to register on an ampmeter. The coil was connected...
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    Not yet. Recertifcation courses are online. NCI...

    Not yet. Recertifcation courses are online. NCI announced last week they are working on virtual courses. I'm sure you'll see something about it here as there are many of us who have taken the class...
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    Is there access to the other side of the ducts?...

    Is there access to the other side of the ducts? Such as in an attic or crawlspace. If there is access it may be possible if the space is not too tight. If they are covered on both top and bottom then...
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    The HVAC 2.0 sales process

    I’ve joined a group that’s getting helping me ease the stress about selling.

    The HVAC2.0 sales process. It helps us as HVAC contractors and technicians to widen our view of providing comfort,...
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    His profile said heating contractor but was...

    His profile said heating contractor but was asking about his own basement. Looks he wasn't completely honest about it.
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    I agree. I had one years ago that was mounted low...

    I agree. I had one years ago that was mounted low and the heating output discolored the floor. Keep an eye on the floor.
  16. This part of the forum does not permit discussion...

    This part of the forum does not permit discussion of technical matters. Click on the little black triangle at the bottom of your post and ask the moderator to move it to tech-to-tch.
  17. Any gap will leak. When the ducts are inside the...

    Any gap will leak. When the ducts are inside the house it's not much of an issue. When the ducts are outside the envelope it IS and issue. The company should have sealed those leaks with putty, tape,...
  18. AFAIK, you can still schedule an onsite training....

    AFAIK, you can still schedule an onsite training. NCI can send an instructor. Contact them about fees and health protection.

    I wish we were big enough to do so. We have to be content with sending...
  19. Performance and reliability of the equipment...

    Performance and reliability of the equipment depends largely on the quality of the installation. This isn't a refrigerator that comes fully assembled. In order to achieve good performance the air...
  20. The full class is 3 days of instruction with a...

    The full class is 3 days of instruction with a test at the end of the third day.
    During the NCI summit conference last week, they announced that they are making arrangements for virtual Full...
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    Either elevate the dehumidifier or drain it into...

    Either elevate the dehumidifier or drain it into a condensate pump.
  22. NCI is working on holding online classes....

    NCI is working on holding online classes. Currently there are recertification classes scheduled.

    The Combustion Analysis & CO class is perhaps the most informative class I’ve attended in 35 years...
  23. Since you brought it up, 98% of the lawyers give...

    Since you brought it up, 98% of the lawyers give the other 2% a bad name.
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    The potential problem with a small deadband is...

    The potential problem with a small deadband is that the system will switch modes back and forth too frequently. For most people, a 3* band is within their comfort zone. We set our modes at home 5*...
  25. Precisely my point. How can we tell without...

    Precisely my point. How can we tell without measurements?
  26. I can’t measure it from here. How could we know?

    I can’t measure it from here. How could we know?
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    With more what?

    With more what?
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    I'm curious why you want to do this. The power...

    I'm curious why you want to do this. The power comsumption is the same, just slower with fewer elements on.
    It can be done, but the fan control needs to be taken into account.

    We cannot give DIY...
  29. It's not the equipment, it's the duct system. You...

    It's not the equipment, it's the duct system. You must have static pressure measured to see if a more efficient filter can be tolerated. The blower can only overcome so much resistance. Resistance...
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    Where are the ducts for the house? Ducts in the...

    Where are the ducts for the house? Ducts in the attic or crawlspace pose a bigger problem than ducts inside the house. Leaking ducts inside the envelope only create uneven distribution. Leaking ducts...
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    Have the house leakage tested with a blower door,...

    Have the house leakage tested with a blower door, then run a load calculation. That will tell you what the size should be.
  32. A pancake air handler. They usually don't have a...

    A pancake air handler. They usually don't have a good air filter. pecmsg nailed it. Have the blower removed. Clean it. Clean the coil.
  33. I see a lot of water condensed on the registers....

    I see a lot of water condensed on the registers. How cold are you trying to keep the space?

    It would be helpful to know the size of the equipment and the size of the space, though I understand...
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    Position of the logs is critical. Incorrect...

    Position of the logs is critical. Incorrect position can cause flame impingement and generate soot. It can cause other issues, too. Since your fireplace is used, I suggest finding the manufacturer's...
  35. It was clear from the picture from the other tech...

    It was clear from the picture from the other tech that he was ignorant of how to use a CA.
  36. James, you are asking for DIY advice. Site rules...

    James, you are asking for DIY advice. Site rules do not permit us to provide that.
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    Don’t pin your hopes on a home warranty. They’ll...

    Don’t pin your hopes on a home warranty. They’ll make your problem worse.
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    T87

    T87
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    You are asking how to diagnose or fix your air...

    You are asking how to diagnose or fix your air conditioner. Site rules do not allow giving such advice. This is not a DIY site.
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    Itt's highly doubtful that the OP is still here...

    Itt's highly doubtful that the OP is still here from a post more than EIGHT YEARS OLD.
  41. Site rules prohibit giving technical advice to...

    Site rules prohibit giving technical advice to non-professionals. We won’t be able to help you.
    It seems your installation company is inadequate. You need to find a more skilled technician.
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    I prefer leather over plastic.

    I prefer leather over plastic.
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    That is correct. I hope the equipment can...

    That is correct. I hope the equipment can generate enough pressure for the supply ducts.
  44. Hi Jim! Good to see you up and around.

    Hi Jim! Good to see you up and around.
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    Registers and dampers should be in the postition...

    Registers and dampers should be in the postition that you normally use because that is how the new equipment will be epected to operate. If you open all registers the "as used" readings won't be...
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    Quickbooks does a great job with double entry...

    Quickbooks does a great job with double entry bookeeping BUT their technical support is completely clueless and it has been licensed (subscriber) based for years now. I used QB99 for almost 10 years...
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    How do you figure that to be a 4 ton cooling...

    How do you figure that to be a 4 ton cooling load? I see it as 3.5 ton or even 3 tons if you tighen the house some more.
  48. I prefer fan only to be a lower speed. I use it...

    I prefer fan only to be a lower speed. I use it to mix the air in the house.
    You may find a higher blower speed to be objectionable during the heating season because it will feel drafty.
  49. That looks much better.

    That looks much better.
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    You have posted in an area of the site where we...

    You have posted in an area of the site where we cannot give technical advice. Click on the little black triangle at the bottom of your post and request that it be moved to the tech to tech forum.
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