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    TVOC Trigger

    What would be a typical set point, in PPM, to trigger increased ventilation in a system that monitors indoor TVOC content? Is 3ppm unrealistic?
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    Just like their front end. Any editing you do is...

    Just like their front end. Any editing you do is downloaded, not dynamic.
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    The pleated filter will work better and be...

    The pleated filter will work better and be cheaper if you include the labor involved in cleaning the mesh filters. I would not be concerned by the minmal pressure drop that a 1 inch pleated filter...
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    I'd add a piece of angle to the center of the...

    I'd add a piece of angle to the center of the plenum and get a 1 or 2 inch pleated filter made to fit at your filter supplier. You could put a pleat in without support but it all depends on how often...
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    Another Great Site

    http://www.oiltechtalk.com/
  6. Best to install a balancing damper at the branch...

    Best to install a balancing damper at the branch where it exits the main trunk.
  7. Thread: Sub Meters

    by big johnson
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    Sub Meters

    Does anyone have any knowledge of natural gas sub-meters that can outpuut a 0-10v or 4-20ma signal to a DDC system for trending? I've found one that cost over $5K but my pockets ain't that deep.
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    Heaterman nailed it. Getting the boiler to seal...

    Heaterman nailed it. Getting the boiler to seal after replacing a section is more luck than science.
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    I think it's "powers". How can your CIS work on...

    I think it's "powers". How can your CIS work on an XP machine?
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    Thanks "A M". I re-posted in technical. I also...

    Thanks "A M". I re-posted in technical. I also found this from Honeywell:
    http://www.dehumidifierexperts.com/product.php?product=112860
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    Too Much Moisture

    I live in the Northwest and have oil heat. I have no AC, don't ever need it. The humidity in my home during the rainy winter months runs 55-70%. I'm in the process of installing interior storm...
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    I would check your local code. In my state, it...

    I would check your local code. In my state, it has to be removed and a ground contamination study done after it's removed. If you leave it a while and oil starts leaching into the ground, it can cost...
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    He's right, you shoudn't have a pump on a steam...

    He's right, you shoudn't have a pump on a steam system unless it's to pump make-up water back into the boiler and even then, city pressure should handle that. Maybe a condensate return pump?
  14. Than I would say it's in the control scheme that...

    Than I would say it's in the control scheme that makes it difficult to cross brands. Not saying it can't be done, but cosly, I'm sure.
  15. Yes, you can pair a heat pump with an oil...

    Yes, you can pair a heat pump with an oil furnace. It sounds to me that the first contractor was talking about the value of oil vs electric back-up heat. Depending on the design temp of your system,...
  16. The HX on your Lennox is what they call "heavy...

    The HX on your Lennox is what they call "heavy steel", not stainless. Stainless is normally used in areas that are subjected to high amounts of condensation. Oil furnaces should run a gross stack...
  17. Obviuosly your unit cannot be controlled in the...

    Obviuosly your unit cannot be controlled in the manor you wish it to be as a "stock" unit. I don't know enough about your heat pump controls to be able to say "buy this stat and it will work." So,...
  18. More controls. Honeywell makes a commercial grade...

    More controls. Honeywell makes a commercial grade stat for the home that has inputs for various temp RTD's. I'm not sure how that work with your heat pump. You would most likely end up gutting...
  19. That setting should have been done when your...

    That setting should have been done when your contractor installed the unit. Is your aux heat energizing too soon?
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    The furnace may be under-fired which causes...

    The furnace may be under-fired which causes condensation to occur. Your stack temp should be at least 400* gross. When your tech comes out he should do a combustion test and make sure the stack temp...
  21. Thread: smell

    by big johnson
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    I agree, it doesn't sound like a dead animal to...

    I agree, it doesn't sound like a dead animal to me and if it was, the stench would be unmistakable. All I can think of is that if you've got any sound attinuation insulation inside the ducting,...
  22. Thread: smell

    by big johnson
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    Are you smelling it or just the building...

    Are you smelling it or just the building occupants?
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    Thanks everyone. Removed the snap ring on inlet...

    Thanks everyone. Removed the snap ring on inlet side bearing of blower wheel after talking to the bearing manufacturer. Now there's float on one end. Ya had it right!
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    Walking Shaft

    Gotta 50hp, belt driven, centrifigul fan with a 3" shaft and pillow block ball bearings. Bearings were new 3 months ago. Checked unit out and found a groove in the shaft on the drive side about 1/4"...
  25. Contractor is correct as far as the more media,...

    Contractor is correct as far as the more media, the lower pressure drop and greater filter longevity.
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