Connecting DVL pipe to wall thimble

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tjvt

Member
May 1, 2014
45
VT
Hooking up a stove in our mobile home. Plan to use DVL stove pipe to wall thimble and out to Dura Plus chimney. Telescoping DVL from stove (top outlet) to 90, then maybe small length of pipe to wall thimble. My first question is do I need some kind of adapter to connect the DVL to the thimble? I’m hoping I can just hook the 90 to the thimble if it gives enough clearance.
 

begreen

Mooderator
Staff member
Nov 18, 2005
101,006
South Puget Sound, WA
Mobile home flue systems tend to be short. Many modern stoves require a minimum 16' flue system height. For that reason, it's really best to run straight up through the roof and usually, that is less costly. Each 90º turn in the flue path is like losing 2 ft of chimney height due to the resistance, so an out-the-wall system is going effectively to lose 4 ft in height.

Duravent makes the adapters for the transition.

Also, select a stove that requires 12-13' of flue. Several Canadian-made stoves have this lower height requirement.
 

tjvt

Member
May 1, 2014
45
VT
It’s a Lopi Answer stove and I’m not even sure how much chimney it needs. That’s good to know about running straight up instead of out wall. Although then I’d have to sweep it from top down? That sounds like a challenge.
 

kennyp2339

Minister of Fire
Feb 16, 2014
6,931
07462
Yes, adapter for stove collar and into the Class A needed
 

begreen

Mooderator
Staff member
Nov 18, 2005
101,006
South Puget Sound, WA
It’s a Lopi Answer stove and I’m not even sure how much chimney it needs. That’s good to know about running straight up instead of out wall. Although then I’d have to sweep it from top down? That sounds like a challenge.
The minimum flue system height for the Answer is 15 ft. from the floor to the chimney cap or about 13' from the flue collar to the top.

It can be swept from the bottom up by gently removing the baffle board. Or, if there is a telescoping pipe for the connector, then by lifting the pipe off of the stove for access.