Hot Dawg venting question?

[limeranger]

Hi,
I currently have a forced air oil furnace, however due to the expense and difficulty of getting the tank filled (need to change a bunch of stuff to satisfy the oil company). I've decided it would be better and cheaper to upgrade to a hanging style heater.

My question is can I connect the vent from the hot dawg to the existing 6" Selkirk chimney or do I have to use something different? The existing chimney uses single wall stove pipe from the furnace to the chimney and then insulated chimney piping from the ceiling to outside the building, all run vertically. Any ideas?

 

[mds5951]

i dont see a reason why you couldnt?

 

[James-W]

I have a Hot Dawg 60,000 BTU natural gas hanging heater in my garage and it is vented out the side of the building. That being said, I don't see why you couldn't vent it out a chimney instead of thru a wall, but I would think going thru a wall would be easier and more practical to do.

Something to keep in mind, many times there are local codes that need to be met when installing a heater, and sometimes the local codes can be a little weird. But even so, if you have a reputable heating/cooling company install it for you they will know what the local codes are, they will do the job correctly, and you won't have a problem.

 

[CNGsaves]

Lot more information needed.

What size Hot Dawg heater are you planning?? The smaller 50K Btu heaters have just a 4" exhaust flue requirement (either vertical or horizontal).

Also, I'm pretty sure the flue has to be double-wall the whole way.

I'd suggest digging into specs on Modine (Hot Dawg) website and figure out the lowest cost / best method for your flue based on layout of your garage.
http://www.modinehvac.com/web/Hot-Dawg.htm

With that long vertical run, it might be cheaper to just go horizontal for a few feet.

Post up some pics of where you want to install the Hot Dawg, and the flue routing from the old oil burner. Good luck.

 

[pseudorealityx]

There's a whole chapter in the IMC devoted to chimneys. Might be worth a look...

http://publicecodes.cyberregs.com/icod/imc/2006f2/icod_imc_2006f2_8_sec001.htm

From that link, you've got 6 'section' links at the top, and then the more detailed links below... if you scroll down, you can read each 'section'.

This is from 2006... so potentially outdated in your local area, but likely close enough. And if it was allowed/not allowed then, chances are, it didn't change with a more recent iteration.

 

[limeranger]

Sorry the unit i'm looking at is a 75k btu unit. I'm not sure how it could be cheaper to run a new vent instead of only going the couple of feet from the back of the unit to the cieling. It only requires a 4" vent so i would think connecting to a 6" would be better.

My main concern is what to do with the existing chimney, it's only a couple of years old and i don't really want to board it up or cap it off and run a new vent if i don't need to.

I'll try to [post some pictures when i get home. Also the company i'm looking to purchase from is supposed to look into and get back to me if an adapter is available.

 

[tgb]

It will be fine to vent it out of that chimney just get a reducer for the 6 to 4 and hook it up. I would recommend using 24 ga. pipe it holds up a little better, only needs to be insulated double wall pipe when passes through a ceiling into the attic.

 

[Steevo]

One of the reasons that Modine Hot Dawg and others such as Mr Heater specify double-wall B-vent exhaust of a specific diameter is to maintain the temperature of the exhaust at a high enough level and flow rate that is minimizes condensing in the flue.