Question on my exhaust layout

[Shawn S]

Last year was my first year with my Englander 25-PDVC.
I burned about 3 1/2 tons and it worked great to keep my house nice and warm. (and save money over oil)
This is how I originally had my exhaust outside the house.

Everything worked great, but by the end of the season I had quite a bit of soot on the soffit of the house as you can see in the second picture.

So I purchased an additional 3-foot section of pipe and changed the layout like this to hopefully get the soot away from the house.

So I’ve gone from a 3-foot vertical with a short horizontal to a 4-foot vertical and 2-foot horizontal.

I haven’t burned the stove yet this year.

Does this look OK or do I have too much horizontal now?

 

[MtDew]

Last year was my first year with my Englander 25-PDVC.
I burned about 3 1/2 tons and it worked great to keep my house nice and warm. (and save money over oil)
This is how I originally had my exhaust outside the house.

Everything worked great, but by the end of the season I had quite a bit of soot on the soffit of the house as you can see in the second picture.

So I purchased an additional 3-foot section of pipe and changed the layout like this to hopefully get the soot away from the house.

So I’ve gone from a 3-foot vertical with a short horizontal to a 4-foot vertical and 2-foot horizontal.

I haven’t burned the stove yet this year.

Does this look OK or do I have too much horizontal now?

I had the exact same exhaust set up with similar issues of siding and soffit discoloration due to smoke and or soot. My solution was to go vertical up thru the soffit and roof and terminate about 3 feet above the roof. Not sure my solution is the best but it worked great for me. Took my time and sealed / flashed around the pipe and haven't had any issues. Just my solution / experience.

 

[yrock87]

I would consider getting a different head. they have the "jet" type ones that get the soot farther away from the house. mine is a 45 down with wire across to keep critters out and it seems to "shoot" the exaust out quite a ways. to be fair this is my first year with it, but i have had the stove on auto igniting two or three times a day for the last two weeks. that creates a lot of black smoke and i see it all well away from my siding.

 

[Owen1508]

How many feet of Horz. do you have other then the 2 foot at the end? If 2 or less it will definately work. Mike from ESW would be know best, but look OK to me.

 

[yrock87]

http://www.amazon.com/PelletVent-Pr...ubst_hi_5?ie=UTF8&refRID=04R1KB351XVSHS12Q9GZ


this is the one that i have. it can rotate to vent straight out, or bend down 45 Degrees. mine is down 45 Degrees

 

[TimfromMA]

http://www.amazon.com/PelletVent-Pr...ubst_hi_5?ie=UTF8&refRID=04R1KB351XVSHS12Q9GZ


this is the one that i have. it can rotate to vent straight out, or bend down 45 Degrees. mine is down 45 Degrees

Just like mine:

(broken image removed)

 

[Shawn S]

How many feet of Horz. do you have other then the 2 foot at the end? If 2 or less it will definately work. Mike from ESW would be know best, but look OK to me.

Here is the inside.
I have a 45-degree bend and 2-foot of horizontal going through the wall thimble.

 

[mik_kane]

Be aware of your EVL

EVL = Equivalent Vent Length

Every piece of pipe has a rating:
1 Ft. horizontal = 1
1 Ft. Vertical = .5
45 degree bend = 2.5
90 degree = 5

On 3" pipe, anything that adds up to more than 15 EVL needs to be increased to 4" pipe, up to a max of about 33.

(broken link removed)

(broken link removed)

 

[Owen1508]

Be aware of your EVL

EVL = Equivalent Vent Length

Every piece of pipe has a rating:
1 Ft. horizontal = 1
1 Ft. Vertical = .5
45 degree bend = 2.5
90 degree = 5

On 3" pipe, anything that adds up to more than 15 EVL needs to be increased to 4" pipe, up to a max of about 33.

(broken link removed)

(broken link removed)

It depends on your elevation (above sea level) as well and the stove. Some can have an EVL of 25 and still use 3" some 15 like the golden eagle
But I agree you need to look at the EVL

 

[stoveguy2esw]

im guessing that the EVL in this will end up being about 17.5 (assuming the corner install and the 4 up 2 out are the same install) optimal is <15 but as long as you are under say 2500 ft ASL i do not see any issues with that hookup.

 

[mik_kane]

im guessing that the EVL in this will end up being about 17.5 (assuming the corner install and the 4 up 2 out are the same install) optimal is <15 but as long as you are under say 2500 ft ASL i do not see any issues with that hookup.

This is not cut and dry as you stated, but it does effect the performance of the stove. Some stoves can handle the greater number some can not. It just seems like a lot of soot that is coming out of his stove, which may be attributed to having the vent on the outside of the house.

 

[TimfromMA]

.....which may be attributed to having the vent on the outside of the house.

Where else would you vent it?

 

[mik_kane]

Where else would you vent it?

I meant that having the vertical rise on the outside of the house creates more soot in the pipe because of the hot air being cooled in the pipe. Plenty of discussions that are posted on this site about it.
His problem maybe solved by cleaning rather than adding more pipe.

 

[stoveguy2esw]

that unit can handle a little more than 15 EVL at lower elevations. i suspect the soot buildup was probably from the exhaust being trapped under the eaves over time

it could also as you said be worsened if the unit is run too long between cleanings as well, a dirty stove does cause a sootier exhaust

 

[Owen1508]

that unit can handle a little more than 15 EVL at lower elevations. i suspect the soot buildup was probably from the exhaust being trapped under the eaves over time it could also as you said be worsened if the unit is run too long between cleanings as well, a dirty stove does cause a sootier exhaust

True as well as;
Soot could also come from a slight lack of combustion air, negative house pressure.

 

[stoveguy2esw]

True as well as;
Soot could also come from a slight lack of combustion air, negative house pressure.

well it could be in some cases although the IP's installation includes the OAK so negative pressure should not be a factor in this particular case

 

[Owen1508]

well it could be in some cases although the IP's installation includes the OAK so negative pressure should not be a factor in this particular case

Yeah that's the trainer in me trying to cover all possible senarios instead of just the case in hand.

 

[stoveguy2esw]

Yeah that's the trainer in me trying to cover all possible senarios instead of just the case in hand.

tru dat, and a valid point to raise

 

[Mr. Spock]

So I’ve gone from a 3-foot vertical with a short horizontal to a 4-foot vertical and 2-foot horizontal.

Just curious, was going strait out the wall with a jet type termination pointed down at the ground not an option?
Would be a lot easier to clean IMO.

 

[yrock87]

Just curious, was going strait out the wall with a jet type termination pointed down at the ground not an option?
Would be a lot easier to clean IMO.

+1
And the ups visible in the photo would eliminate any smoke issues of a direct vent setup.

 

[Shawn S]

Well, it's been cold enough to run the stove a couple of times these past few days and my new setup is working just fine.
When it's just firing up and throwing a lot of smoke outside it seems to be further away from the house than before so I should be getting less soot on the soffit now.
Thanks for all the comments.