Wood Pellet Stove venting

[3fingersalute]

Is there anything in particular that must be achieved when venting a wood pellet stove? I know it is to be done with the 3" double-walled pipe, but I've seen it done many different ways (up and out and then up again, up and straight out and even straight out of the back of the stove through a wall with no bends whatsoever). Is there advantages to one setup over another?

 

[3fingersalute]

Ok, maybe I didn't explain it the best. My stove has the flu located in front of the hopper, so I need to go up first. Would something like this work, as long as I used the wall thimble and vent cover on the outside of the house, or do I need to go up for some reason? Should I put a T in with a cleanout, or will it be ok to just remove the pipe on the inside and clean it when needed?

Sorry for the poor artistic skills

 

[GVA]

Ok, maybe I didn't explain it the best. My stove has the flu located in front of the hopper, so I need to go up first. Would something like this work, as long as I used the wall thimble and vent cover on the outside of the house, or do I need to go up for some reason? Should I put a T in with a cleanout, or will it be ok to just remove the pipe on the inside and clean it when needed?

Sorry for the poor artistic skills

What make and model stove are we talking about? is it new? Do you have a manual?
It's best to follow the manufacturers recomendations first.

 

[3fingersalute]

Here's the problem. I had a Englander 25-PFS pellet stove pretty much given to me, but I now found out it has a 6" flu instead of the 3" that most pellet stoves have. This causes a problem as they don't seem to sell vent kits for pellet stoves in anything but 3", and I don't have any existing chimney structure to tie the 6" into.

I assume flu sizes cannot be reduced, and adding a chimney is out of the question at the moment. Is this stove basically useless to me?

 

[webbie]

You should go to englanders site and see if you can download a manual. If it must be 6 inch, then you can install regular class A metal chimney, but it must be up - not out.

The manual will answer a LOT of questions, as I am not familiar with any frestanding pellet units that take 6 inch.

 

[3fingersalute]

I did download the manual, and it shows venting either straight up to a class A chimney, or straight out the wall, and then up. But what does the class A chimney achieve when going out the wall and then up?

 

[Toolman]

I looked at a used pellet stove that I was going to buy. It had the six inch vent, and specifically could not be direct vented. The reason for the large pipe was that it provided natural draft, and had to be vented into a normal chimney. It did not have a combustion blower.

Make sure that this is not the case with yours before you attempt venting through the wall. Make certain that you have the correct manual. If you do, then the manual should be correct in its venting recomendations.

 

[3fingersalute]

I looked at a used pellet stove that I was going to buy. It had the six inch vent, and specifically could not be direct vented. The reason for the large pipe was that it provided natural draft, and had to be vented into a normal chimney. It did not have a combustion blower.

Make sure that this is not the case with yours before you attempt venting through the wall. Make certain that you have the correct manual. If you do, then the manual should be correct in its venting recomendations.

Thanks for the reply. I have the manual, and it states that a Class A chimney is needed, so I'm now deciding whether I should put the money into the Class A chimney kit, or if I should just move on and look for something that can be direct vented.

My next question is this. If I go with one of the prefab chimneys like this, do I need to go to any height in particular? Is there a reason to go to a certain height, or is it just dependant on local regulations?

I assume this is what I need, right?

(broken link removed to http://www.woodstove.com/images/prefabimages/install-3.jpg)

 

[begreen]

Have you spoken to anyone who owns one of these units? BB, do you know anything about the 25-PFS?

It may be a good stove, I don't know, but usually pellet stoves are about efficiency. That means lots of heat extracted from the fuel and little up the chimney. Most pellet stoves have a much lower requirement for their flue. Given the class A requirement for the stack one has to wonder how efficient this unit is.

If this is to be a permanent source of heat in the house I'd do some more research. Before going to the hassle and expense, it might be worth a call to Englander to find out a bit more about the unit, including parts availability. If you do go ahead with the class A, I would recommend installing it as if you were going to connect it to a full wood stove.

(broken link removed to http://www.duravent.com/docs/instruct/L150%20Dec05.pdf)

 

[GVA]

http://www.englanderstoves.com/manuals/25-PFS.pdf
heres a link for the rest of us. maybe I am missing something on the straight out the wall thing :blank:

 

[hearthtools]

That stove relies on draft so the more Vertical pipe you have the better it will draft.
If you are going to use Pellet vent I sudjest using 4" due to the fact that the stoves starts out with 6"

if you are going to go up then out
best to go up a min of 3 feet then out
then a min of 5' of vertical pipe on the outside.

 

[3fingersalute]

Right, thats the same manual I have. On page 16, it shows basically the installation I want to use, up, out and then up again.

So hearthtools, you are reccomending that I go up at least 5' on the outside of the house, and 3' on the inside. I have not seen anything 4" available around here, its all either 3" or 6", so I will stick with 6". I assume everything should be run with the double walled piping?

I'm debating just skipping this altogether and trying to find a newer stove that I can just use the 3" standard pellet vent piping with, as that seems to be available everywhere for relatively cheap.

 

[AIRJET4U]

Here's the problem. I had a Englander 25-PFS pellet stove pretty much given to me, but I now found out it has a 6" flu instead of the 3" that most pellet stoves have. This causes a problem as they don't seem to sell vent kits for pellet stoves in anything but 3", and I don't have any existing chimney structure to tie the 6" into.

I assume flu sizes cannot be reduced, and adding a chimney is out of the question at the moment. Is this stove basically useless to me?

AirJet manufactures a UL approved 6" double wall stainless inside for pellet stove's, we carry L-vent 3" thru 8"

 

[BrotherBart]

All I know is that the manual is very clear about using a six inch pipe. A call to their customer service department would be in order here:

(800) 245-6489

 

[3fingersalute]

Here's the problem. I had a Englander 25-PFS pellet stove pretty much given to me, but I now found out it has a 6" flu instead of the 3" that most pellet stoves have. This causes a problem as they don't seem to sell vent kits for pellet stoves in anything but 3", and I don't have any existing chimney structure to tie the 6" into.

I assume flu sizes cannot be reduced, and adding a chimney is out of the question at the moment. Is this stove basically useless to me?

AirJet manufactures a UL approved 6" double wall stainless inside for pellet stove's, we carry L-vent 3" thru 8"

But from what I've seen, I'm going to have close to $500 or better in venting this. Wouldn't I be better off to just find a stove that uses 3", since I can vent that for $200 or so?

 

[AIRJET4U]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

 

[3fingersalute]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

So what all would I need to vent from the stove, up and out a wall, and at least 5' up the side of the outside of the house?

 

[AIRJET4U]

Only problem I may have with you is that we are not UL approved yet for horizontal termination. I can take you out the wall and straight up the side of your home?

 

[Metal]

Most of the Pellet Vent Manufacturers have 6" L-Vent. In this case I think you might be better off selling this unit and looking for something that better fits your situation. It would be different if you already had a 6" Class A chimney and just wanted to switch out your existing woodburner with a pellet, but since you are starting from square one you are throwing a lot of money at a chimney to make a "free" pelletburner work IMHO.

 

[3fingersalute]

Thanks metal, thats kind of what I was thinking too.

 

[hearthtools]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

who makes 6" pellet vent?

and just my opinion I would never use that stove.
you will have a lot of troubles.

 

[3fingersalute]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

who makes 6" pellet vent?

and just my opinion I would never use that stove.
you will have a lot of troubles.

Troubles how?

 

[AIRJET4U]

AirJet Inc. manufactures pellet vent from 3" thru 8"

Please visit us at either (old site) www.theventpeople.com or (new site) www.continentalindustries.com

Thanks and have a great day!

 

[hearthtools]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

who makes 6" pellet vent?

and just my opinion I would never use that stove.
you will have a lot of troubles.

Troubles how?

I have never seen that stove work as well as others.
Sooting
Draft issues
Auger Jams
Not being able to to get parts.

I have personaly Replace 6 with new pellet stoves.

 

[3fingersalute]

That is pretty much your call, All Im saying is that I have 6" L-Vent for your application

Thanks and have a great day

who makes 6" pellet vent?

and just my opinion I would never use that stove.
you will have a lot of troubles.

Troubles how?

I have never seen that stove work as well as others.
Sooting
Draft issues
Auger Jams
Not being able to to get parts.

I have personaly Replace 6 with new pellet stoves.

Great, thanks for the info!