emission from condensing boilers

Bob_36

Thanks for the quick response. I pulled up the munchkin installation manual yesterday and saw that if over a driveway, it must be around 8-10 ft. above. I planned on running it to just below the first floor ceiling and then exiting the house. Has anyone used the chimney as a way to run the vent.

Bob_36

I plan on installing a condensing boiler in the near future. I would need to vent it through the wall over my driveway. How much emission should I expect to vent out. Would there be a problem with any discoloration either on the driveway or on the siding. I have a chimney in the center of the house which I could use as a chase to to run the vent pipe through rather than the wall. Any ideas from experience would be helpful. Thanks in advance.

Steve Ebels_3

Venting issues

Discoloration of your house will likely not be a problem. I've never had or seen it occur. I suppose under certain circumstances that would trap the exhaust against the house you could see some over time. Usually though, if a direct vent appliance is getting exhaust air recirculated back into the intake, you'll wind up with freeze up problems in your vent.

Our mechanical code prohibits venting of any appliance over top of a drive or walkway unless it's over ** feet above grade depending on a number of factors. The minimum is 7 feet I believe. This is to prevent icing problems from arising.

joel_19

yes

we have run the viessmann vitodens up a chimney chase

[Deleted User]

Careful...

If you MUST terminate it above the driveway, put a 45 degree El facing upwards on it to contain as much drippage as you can in the vent piping. Otherwise, you'll end up with a stalagmite acidic popsicle on the ground during freezing conditions. I found out the hard way. TO make things worse, some goof ball from the apartments where this had been done parked his 1960 Cadillac under the vent terminus, and wanted to sue me for ruining his custom paint job. I pointed out the fact that he was parked in a NO PARKING zone, and haven't heard from him since.

Proceed with caution, and whenever possible, vent vertically as high as possible.

ME

Back-Burner_2

For what its worth - I spoke to 2 manufacturers of condensing boilers. They told me the plume can and most likely will discolor or fade vinyl siding when venting through the side of the house. Thats all I had to hear!