My new shop

[Ken Massingale]

Originally Posted by Mike Davis

The reverse flue flow is what i was concerned about. I think I will make a vent near the back of the wood stove to supply air to the stove. I can close the damper while I have the DC on.

Thanks

Morning Mike,
Our new shop is finished, we're still moving tools and stuff from the old one.
We installed a triple wall chimney kit and a Vogelzang wood stove a couple of weeks ago.
I won't argue with the theory of reverse flue flow, but we haven't had any issue with running a Delta 50-760 DC. There is a DC drop ~ 10 feet from the stove and I have visually checked the draw on the stove with that drop opened and see no difference.
Neither smoke nor carbon monoxide detectors have alarmed.
Congrats on the new shop.
Ken

[Alan in Little Washington]

I can tell you from firsthand experience that it can be a BIG problem. I was working in my old shop shop adjacent to a gas furnace / hot water heater room. I had the DC going, didn't smell a thing, but got a splitting headache and my fingernails started to turn blue. I don't know how far I was from either getting sick or passing out. After I turned off the DC I did a smell check and realized I was getting reverse flue gases in the shop. To verify this I turned the DC back on and checked the flow at the furnace and heater flu openings- yup, reverse flu flow and it was pulling combustion gases directly from heaters into the shop. These were older, unsealed systems. A newer system with sealed air intake/combustion chamber/vent might not be a problem.

I don't know how much Carbon Monoxide (CO) is produced by properly adjusted equipment (mine probably wasn't), I guess some, but even small amounts are very dangerous. CO (link to CO info) is odorless, tasteless, and invisible and it bonds with hemoglobin in your blood much, much, much more readily than oxygen, AND stays there for a long time. It only takes extremely small concentrations to build up over time to be dangerous since it doesn't leave your system easily It is something you want to be sure about, not guess!

[Mike Davis]

Alan,

Is your new DC inside the shop? I can't afford a DC of sufficient quality to filter all the dust with an inside system.

I know your answer will be I can't afford to pass out either.

But, What can I do to lower my cost by putting the DC outside of the shop AND heat with a woodstove. There is no gas in the shop and I'm not sure I want an electric heater out there. I already have the woodstove and plenty of wood to burn.

[AndyBarnhart]

Is that an older wood stove or a modern one? In other words, does it have gaskets and do they work well?

http://www.woodheat.org/maintenance/maintenance.htm

[Alan in Little Washington]

Originally Posted by Mike Davis

Alan,

Is your new DC inside the shop? I can't afford a DC of sufficient quality to filter all the dust with an inside system.

I know your answer will be I can't afford to pass out either.

But, What can I do to lower my cost by putting the DC outside of the shop AND heat with a woodstove. There is no gas in the shop and I'm not sure I want an electric heater out there. I already have the woodstove and plenty of wood to burn.

My DC is in the garage, below my workshop. I don't have a solution, except an airtight woodstove where the combustion air is supplied from outside via a duct.

[Woodman2k]

Mike,
I had a similar setup as you are talking about and switched to a outside/fresh air kit for my stove and the draft problems went away.My collector pulls a little more than a 760 so it was an issue.As Allan said,it can be a dangerous health issue for everybody in the building especially if you have any devices with some form of pilot lite.That also would then have a bearing on applying flammable finishes in the same conditions.Buy a Co detecter,at least some form of protection.
Greg

[Dutchman]

Congrats on the new shop Mike. The only way to deal with all that additional space is MORE MACHINES & TOOLS!