Install with Duravent DVL

[Woody73]

I am now in the process of installing my Stove and am a bit confused when it comes to connecting the DVL double wall pipe to the through the wall chimney kit and to the stove the first picture is all the pieces I received in the kit that seem to be for the connection to the chimney, I think I am missing a piece for DVL but not entirely sure? All I have used previously was single wall pipe so this is all new to me. Also in the second picture is the adapter I bought to connect to the collar on the stove which is a very loose fit, not snug like a single wall pipe would be, the pipe is 6 inch like it’s supposed to be, I’m pretty confused at this point not knowing if I’m missing something or just not doing something right, any help would be greatly appreciated. Thanks

 

[MongoMongoson]

What kind of chimney are you attaching to? Is it a Duravent class A (Selkirk stainless double wall manufactured chimney)? If so, you would use a Stove Pipe Adapter. It has a 1/4 turn thread type lock on one end and is crimped on the other end. The crimped end inserts into your double wall stove pipe and is then wrapped with a finishing band.

If the DVL pipe fits better into the stove collar than the adapter does, you can connect the stove pipe directly to the collar. There is nothing wrong with that.

All the DVL I have purchased fits together more loosely that the single wall I used in the past. Once it is screwed together it is solid, but I wonder about leaky joints.

Please take some pictures of your chimney inlet... what you are trying to connect to. I only have experience connecting to a Class A chimney but others can help if you provide more pictures.

I have heard Selkirk phone support is great. Their documentation is not so great, though.

 

[begreen]

Is this still with DuraPlus chimney pipe? If so, is there a short section coming off of the tee through the DuraPlus thimble and into the room? At that point, the stainless collar should fit into the interior end of the DuraPlus thimble. This acts as the inside transition piece to the DVL.

The stove may not need the DVL adapter to connect to the stove. It's too loose for flue collars that are 6" ID. For some stoves, the DVL sits snugly, directly on the flue collar. This is the way our stove is connected. Measure and test the fit before installing the adapter.

 

[webby3650]

Ok, in the first picture you have 2 different stovepipe adapters from duravent. The SS one is the old style that goes with dura-plus. The all black one pushes into dura-tech and the trim ring slides over it and secures to the pipe with the provided screws. Both adapters may work with dura plus, I’m not sure though. We don’t work with the plus as it’s a box store product.
The stove top adapter is sloppy on most stoves. You can add some gasket material to help.

 

[begreen]

I think this install is with DuraPlus based on previous posting. DVL fits nice and snugly into a lot of modern stove flue collars. I'd return the adapter for credit if that is the case.

 

[webby3650]

I think this install is with DuraPlus based on previous posting. DVL fits nice and snugly into a lot of modern stove flue collars. I'd return the adapter for credit if that is the case.

The dvl stove top adapter does not fit snug usually. We don’t often use it for that reason.

 

[begreen]

The dvl stove top adapter does not fit snug usually. We don’t often use it for that reason.

Agreed. I don't use it. Unfortunately, they put their key damper in the adapter section instead of a standard 6" section of DVL. I pulled it out and put it into a regular section.

 

[Woody73]

Okay thanks, I will give it a try without it, the chimney is duraplus triple wall, I went ahead and ordered the adapter for the chimney and got it here, I thought it was supposed to come with the kit but it didn’t, I think I may have to make some changes to my wall thimble now, I was under the impression that the 9 inch horizontal section that goes through the wall could be level but I’m reading that it needs to have a uphill pitch in it, I’m not understanding how to achieve that while still having the outside sections of chimney stay plumb 🤔

 

[begreen]

Okay thanks, I will give it a try without it, the chimney is duraplus triple wall, I went ahead and ordered the adapter for the chimney and got it here, I thought it was supposed to come with the kit but it didn’t, I think I may have to make some changes to my wall thimble now, I was under the impression that the 9 inch horizontal section that goes through the wall could be level but I’m reading that it needs to have a uphill pitch in it, I’m not understanding how to achieve that while still having the outside sections of chimney stay plumb 🤔

It's not. That section will be level. It's why it should be as short as possible.

 

[Woody73]

Okay that is great to hear! This is a picture of the chimney inlet/ thimble, I have not finished installing the rest of the chimney yet working on making sure everything is good with this before I get too far, the 9 inch piece seems to be in as far as it will go but is not quite reaching the edge of the thimble, is that normal? The adapter for the DVL going to this seems to not overlap much which concerns me.

 

[Woody73]

It’s about 3/4 inch overlap without the rest of the adapter piece and has a pretty big gap all the way around…

 

[Woody73]

Here is the outside of it so far I had to add a couple pieces of wood to make everything fit together right if that may have anything to do with it

 

[begreen]

If 3/4" exterior grade plywood was used instead of the 2x8s, would that eliminate the concern?

 

[webby3650]

The horizontal pipe through the thimble is supposed to have rise. It’s very to achieve though. Either the pipe inside looks off, or the outside, its hard to make it happen.

 

[Woody73]

Well I put the 2x8s because that’s what the gap was when I put the chimney in all the way, so 3/4 wouldn’t work, so it seems right I’m not sure if it’s a problem or if I’m just overthinking it

 

[begreen]

It’s about 3/4 inch overlap without the rest of the adapter piece and has a pretty big gap all the way around…

I haven't worked with DuraPlus. Rather than giving bad information it would be better to contact their support line. webby3650 may also know.

 

[Woody73]

thanks I sent them a email this evening, I will post what they say back.

 

[Woody73]

this is the question I sent,

• Message: Hello I am installing a 6 inch Duravent chimney out the wall kit and DVL stove pipe, the adapter conection between the two only has a overlap of around 3/4 of a inch and a gap of around 1/8 to 1/4 inch on the inner stainless part, is this correct? There is a 5/16 inch gap between the end of the inner stainless flue and the outside of the thimble, rather than being flush. I would prefer responses in email due to limited access to phone service, thanks.

This is the answer,
Good Morning,



The amount of overlap and the small 1/8 gap for the adapter is normal. The1/8 gap will close off when the inner liner heats up and expands. There is no worry for smoke leakage because the system is a natural draft so smoke is sucked out the top more than your stove pushing it. The gap between the pipe and wall thimble is normal as well and we recommend using a high temp RTV caulk to seal this gap.

The gap still bothers me but I guess it is what it is if they say it’s normal, weird that all the other connections don’t have a gap. Does anyone use RTV anywhere inside? I wouldn’t have thought that would be necessary, I used it to seal the chimney to the outside portion of the thimble to keep water out.