Getting ready to buy parts for pellet prep install.

[Randallflagg]

So i am finally getting ready after a nice warm summer to get a liner installed and be 100% ready for a pellet stove.

I have the 3 stoves in mind ComfortBilt HP50, HP21 or Pleasant Hearth PH50CABPS, but my question is on running the liner/hookup.

I have an exterior block, clay lined chimney. There are 2 clean outs, 1 right at the back where it enters the house, and another 3' down from there (all outside). So I was thinking about running the liner down from the top to where it enters the house without a clean out, 90 degrees to the thimble, then into the house to another 90, down about 2 1/2 feet to a clean out T then into the stove.

Would this be too difficult to clean out? I was thinking about a T in the chimney but would have to extend the bottom clean out a few feet just so that I could reach it. So would a vacuum hose from behind the appliance, up a few feet be able to do the job well enough to keep this safe, or will I regret putting this all together and wanting to change it down the road.

My old thread about it.

 

[Randallflagg]

No opinions on the matter? I was thinking about paying someone to come out and look but the local places are booking 1 month out right now.

 

[stovelark]

Sounds like a good plan. Won't be difficult to clean, espec if you break the pipe connection at the wall thimble and sweep upwards through the liner to the top. Take the inside pipe off the back of the stove, take it outside and clean. Sounds like the way to go for me...

 

[Lake Girl]

Is the chimney being used by any other appliance? The two clean-outs mentioned, I am judging this is for a basement install? Are you planning on installing an OAK (outside air kit)?

I am guessing it is set up for a woodstove so existing thimble would require replacement (clay or metal existing?) Keep in mind that the entire liner would need to be cleaned after every ton of pellets ... not just the small bit from the stove to the thimble so a vacuum alone at the clean out would not be adequate. The Leaf Blower trick is would be an option dependant on neighbours.

Pics of set-up might help.

 

[Randallflagg]

Appreciate the replies. I'm very new to the whole concept of a pellet stove, so all of my info has come from online research. I thought the pipe needed to be sealed with high temp caulk, just break and re-seal?

This will be installed on a grade level slab in a tri-level. I have an exterior chimney that does nothing right now. I ripped out the stove they installed and encased in brick along with the thimble which was a mass of brick with a clay liner into the house.

It still looks like photo (after stove/brick removal). My other thought was to install the liner to a 45, straight pipe into the house, and then another 45 down to appliance with a T.

Option 1: seems to be the best but then I have to figure out how to handle the pipe into the house, surround with durock? and how to handle trim on inside.

Option 2: simple use a thimble, could take longer to clean out.

Option 3: simple again with a thimble, just dealing with extending t down to clean out.

 

[Bioburner]

The use of silicone in a joint usually means permanent. Can use self bonding silicone tape with better leak prevention on the outside seam and can easily cut on the seam and remove if needed. Looks more professional too.

 

[Randallflagg]

The use of silicone in a joint usually means permanent. Can use self bonding silicone tape with better leak prevention on the outside seam and can easily cut on the seam and remove if needed. Looks more professional too.

OK, will remember that one.

 

[Randallflagg]

Ok, I have decided on option 2, and just removing the pipe when it comes time for cleaning. Seems like sound advice and even a picture of that configuration in the pellet stove manual.

How do I handle the transition from the liner to the pellet pipe? The pipe I bought has an appliance connector, should I even use that or buy the special Duravent flex connector, meant for only their brand of flex pipe?

 

[Lake Girl]

Appliance connector runs off the stove exhaust port to connect to pellet pipe so likely still need a transition piece from pipe to liner. Rigid pellet venting to thimble then connection to liner right?

 

[Randallflagg]

Appliance connector runs off the stove exhaust port to connect to pellet pipe so likely still need a transition piece from pipe to liner. Rigid pellet venting to thimble then connection to liner right?

Yes, I just didn't know if that appliance connector would connect directly to the duravent double wall pipe. I saw duravent has a flex connector but it doesn't show how it actually connects.

Pipe kit and pellet stove arrive tomorrow. All I should need is some short pipe sections an elbow and whatever part goes between the flex and double wall pipe.

 

[Randallflagg]

Got the thimble done this weekend. It required me to use concrete to build up the massive hole in the chimney and I used silicon and Tapcons on the thimble on the chimney side. The appliance connector that came with the flex line fit right inside the DuraVent pipe perfectly. I sealed that connection with silicon and screws. Glad the hard part is done.