What size vent and configuration are you running?

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Install fire 1

Install fire 1

Member
Dec 5, 2010
159
Canada.
I was just curious how many of you are running 3" or 4" vent on your pellet stoves?

I am running 3" with approx 3 feet of vertical before it terminates through the wall horizontally with a nice stainlees cap, that has a 45' turndown built in.

This setup seems to be serving me well.

Brand is ICC pellet vent.
 
4" horizontal Selkirk vent...
 
I was always led to believe that vertical rise is good for you when the stove goes out (no hydro), so it will vent naturally and not fill your house with smoke.
 
3 inch Forever Flex AL29-4C straight up, no 45s or 90s, the existing chimney flue approximately 14 feet long with a OAK running down the same existing chimney flue.
 
4" Selkirk PL vent, 3' horizontal from Stove to Tee, 6' rise, then a short horizontal run outdoors...
 
3 foot horizontal Bixby pipe (3" exhaust w/in 5" fresh air) to downward elbow. Lost power for the first time last week; no smoke, no smell!
 
Selkirk direct-temp 4" up and out.
 
Install fire 1 said:
I was always led to believe that vertical rise is good for you when the stove goes out (no hydro), so it will vent naturally and not fill your house with smoke.
Click to expand...

Up 4' and out 3" inch almost at the maximum EVL.

It depends upon the stove as to what will happen when the juice goes off. If there is a very low air flow in the exhaust system or a buildup in the burn pot a bit of natural draft will help keep the stuff going out the flue. An OAK will assist in the matter.
 
3" stove outlet, into 3"---->4" stove adapter, then a T, up about 6' to a 4"---->8" adapter (old wood stove pipe), and then about 12' straight up through the roof to round cap.
 
3 inch flex pipe, straight up the fireplace liner 18 feet terminates with rain cap and stainless bonnet on top of chimney . No t's no elbows, no 90's....
 
Nicholas440 said:
3 inch flex pipe, straight up the fireplace liner 18 feet terminates with rain cap and stainless bonnet on top of chimney . No t's no elbows, no 90's....
Click to expand...

You don't have a cleanout T on the back of the stove?
 
3" Selkirk, 15 feet, one 90 cleanout tee and two 45's. I wanted to go with 4" but it was going to take forever to order it and I was in a rush. The 3" is working great. When I had my stove rounning out the wall it would not stay lit on low. Now after going vertical it does.
 
1 ft horizontal (3" simpson duravent) from stove to 4" cleanout T
then up the chimney with the 4" duravent - approx. 16 ft.
 
3 inch Duravent thru the chimmey wall then 90 deg up 25 ft Duravent Flex to chimney cap

Basement stove: 45 deg off stove then 3 ft of 3 inch Duravent straight thru concrete wall to a cap.
 
FordMastertech said:
3 inch Forever Flex AL29-4C straight up, no 45s or 90s, the existing chimney flue approximately 14 feet long with a OAK running down the same existing chimney flue.
Click to expand...

I have 17' of 3" running up my chimneys. FMT, what size OAK did you run up your chimney? How did you terminate it at the top? This is my next project. Did you fab your own connection at the stove end? I'm afraid that 17' of 2" pipe is pretty darn long for the combustion blower to be sucking on.
 
imacman said:
Nicholas440 said:
3 inch flex pipe, straight up the fireplace liner 18 feet terminates with rain cap and stainless bonnet on top of chimney . No t's no elbows, no 90's....
Click to expand...

You don't have a cleanout T on the back of the stove?
Click to expand...

On the Castile and Sante Fe, the outlet of the combustion blower is straight up for the inserts. No room for a tee. At clean up time, I put a length of clear plastic tubing on a reducer on my Loveless vac and stick it into the combustion blower housing. I move it around and see the ash being sucked up. Also, I get in there and tap on the flex liner rather vigorously and see more ash get sucked up. Works good.
 
3" simpson, stove adapter, 90 up , 90 out, 2' straight out to a cap.
 
I have a 3" straight through. I am replacing my stove (see post on Whitfield Firebox Crack) with a Lopi Pioneer. Of course it has the exhaust on the opposite side and 5 inches higher than the Whitfield. This in turn put me into a situation where the hole I have to cut in the wall requires me to go through a sill plate of doubled 2X8's!

Nothing is ever easy!!
 
tjnamtiw said:
FordMastertech said:
3 inch Forever Flex AL29-4C straight up, no 45s or 90s, the existing chimney flue approximately 14 feet long with a OAK running down the same existing chimney flue.
Click to expand...

I have 17' of 3" running up my chimneys. FMT, what size OAK did you run up your chimney? How did you terminate it at the top? This is my next project. Did you fab your own connection at the stove end? I'm afraid that 17' of 2" pipe is pretty darn long for the combustion blower to be sucking on.
Click to expand...
I used 3 inch flexible aluminum ducting. The top terminates with a U bend to keep the 12 in separation from exhaust to intake. I had to do that because of the blue stone cap on the top of my chimney. I fabricated a flat plate and welded a short piece of 3 inch exhaust pipe to it and just screwed it to the rear of the stoved air intake. I have a 90 degree aluminum dryer duct that slip fits over the fabricated adapter. The nice thing about this setup is even on the coldest days the air coming into the stove is warmed by the transfer of heat from the exhaust to intake piping running in the same masonry chimney flue.
 

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FordMastertech said:
tjnamtiw said:
FordMastertech said:
3 inch Forever Flex AL29-4C straight up, no 45s or 90s, the existing chimney flue approximately 14 feet long with a OAK running down the same existing chimney flue.
Click to expand...

I have 17' of 3" running up my chimneys. FMT, what size OAK did you run up your chimney? How did you terminate it at the top? This is my next project. Did you fab your own connection at the stove end? I'm afraid that 17' of 2" pipe is pretty darn long for the combustion blower to be sucking on.
Click to expand...
I used 3 inch flexible aluminum ducting. The top terminates with a U bend to keep the 12 in separation from exhaust to intake. I had to do that because of the blue stone cap on the top of my chimney. I fabricated a flat plate and welded a short piece of 3 inch exhaust pipe to it and just screwed it to the rear of the stoved air intake. I have a 90 degree aluminum dryer duct that slip fits over the fabricated adapter. The nice thing about this setup is even on the coldest days the air coming into the stove is warmed by the transfer of heat from the exhaust to intake piping running in the same masonry chimney flue.
Click to expand...

I like it! Thanks a lot for the pictures and sharing it with me. ONE MORE PROJECT!!! :snake:
 
3 inch by 24 inch vertical pipe. I shoot straight out the wall on a second Floor. Have had power outages and even prior to getting the UPS, never had smoke in the house.
 
Both stoves using 3" Simpson Duravent.
One with 5' up and 3' out , the other is 3' out and up 5'.
 
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