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Direct vent furnace leaking water?
This quesiton is for my knowledge only, I will not be making any repairs to this system as it is not mine.
As many on the wall know I often wonder about things and probably often ask dumb questions but that hasent stopped me yet. :) I was helping a friend install their home theater equipment Friday in their new house and noticed the furnace was leaking water from one of the 3" PVC lines. I don't know if it was exhaust or intake and didn't really look into it as they are having someone come out to work on it.
So my question is, should there ever be water in either the exhaust or intake on a high efficiency direct vent furnace? And if so, how is it normally handled? Is this why the furnaces appear to have a second drain besides the evaporator condensate drain?
Thank you for your time.
Single pipe quasi-vapor system.
Typical operating pressure 0.15 - 0.43 oz measured with Magnehelic. High pressure limit set to 4.6oz. Weil-McLain EG-40 with barometric damper connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
Steam system pictures updated 1/25/15.https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#