Vermont Castings Defiant Encore 2190 Flue Collar question

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Justin325

New Member
Nov 17, 2022
9
Ohio
I have a Vermont Castings Encore 2190 that seems to be hard to control when fully loaded.
It can get very hot and uses up a full load in about 5-6 hours

Burning well seasoned oak that is stored in a covered wood shed.

My questions is: Should the Flue Collar to vertical flue pipe be sealed? As seen in the pics I can see flames through the crack and I hear whistling when the stove is not in Catalytic mode. I did an incense smoke test and I did notice that this area does suck in smoke when the fire is going.

I replaced the catalyst last year and this helped, but I feel like I should be getting longer burns that can be controled to be less hot.
I don't notice any smoke leaks (getting sucked in) around the door seal or the top load seal.

Any other place I should look?

Thanks!
Justin

VC1.jpg VC2.jpg
 
Last edited:

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
That gap can be sealed with some flat stove gasket, but it may not change the short burn time. How tall is the flue system on this stove?
 

gthomas785

Minister of Fire
Feb 8, 2020
749
Central MA
Also check the window gaskets as well as the ash pan. They can loosen over time and be a culprit for letting in excess air.
A leak in the flue system won't cause the issue you described, if anything it would decrease the draft and slow down the fire. But I don't think a gap that size would be anything to worry about.
 

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
Yes, could be door gaskets wearing down, or the combustor package breaking down too.

Is this a model 2550? How did the refractory assembly look when the cat was replaced? Is the secondary air probe in good shape?
 

Justin325

New Member
Nov 17, 2022
9
Ohio
Also check the window gaskets as well as the ash pan. They can loosen over time and be a culprit for letting in excess air.
A leak in the flue system won't cause the issue you described, if anything it would decrease the draft and slow down the fire. But I don't think a gap that size would be anything to worry about.

The fact that I can see flames through this (when NOT in catalytic mode) and not when IN catalytic mode has me thinking it could be the damper seal. I do have to fiddle with the damper lever a bit to get it to stay shut... almost like I need to slam the damper closed or else it will fall back open. I'll have to tear it down tomorrow and take a look at things.
 

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
That makes sense. With the bypass open, the flame path is direct to the flue.

There is one more story above this room and both floors have 8' ceilings.
Is there an attic too? How tall is the chimney once it exits the roof?
 

Justin325

New Member
Nov 17, 2022
9
Ohio
Is this a model 2550? How did the refractory assembly look when the cat was replaced? Is the secondary air probe in good shape?
This is a 2190. The refractory didn't look too bad when I replaced the cat, it wasn't pretty, but all in one piece.

Where is the secondary air probe?
I'm new to woodstoves, but very mechanically inclined and love to learn how things work.
 

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
Ah, the green color made me think of the 2550. The Defiant Encore 2190 had the secondary probe, but I don't remember where it is.

The chimney looks to be around 24-25' tall.
 
Last edited:

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
What species of wood is being burned and how thick are the splits?
 

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
Looks like the secondary probe is on the rear left side when viewing the stove from the front. It is linked to a damper below it.
Screen Shot 2022-11-17 at 11.34.00 AM.png
If the door and ashpan gaskets are sealing well, then next, make sure the thermostatic air control is closing.

All oak. split 1.5 years ago. Stored outside in covered shed. Pieces are about the size of (2) 2x4's stacked 16"-18" long
The wood sounds good.
 
Last edited:

begreen

Mooderator
Staff member
Nov 18, 2005
98,138
South Puget Sound, WA
That looks like the secondary air flap. The secondary air probe may need replacing if it sticks open. If it's never been replaced, then this is a good time to do it.

The thermostatic primary air control flapper is down below this, underneath the stove.

@defiant3 any other thoughts?
 

gthomas785

Minister of Fire
Feb 8, 2020
749
Central MA
Is this one of the stoves that has the primary air intake on the back corner? there's a ball chain that lifts up a flap and you should be able to hear it "clink" shut when you turn it down.
 

Justin325

New Member
Nov 17, 2022
9
Ohio
Is this one of the stoves that has the primary air intake on the back corner? there's a ball chain that lifts up a flap and you should be able to hear it "clink" shut when you turn it down.
I think this is the part that moves when I adjust the air intake.

22C877AD-FF90-4382-80B3-781FC29F4C80.jpeg
 

Defiant 3

New Member
Oct 25, 2022
77
NH
Thomas, no. Older V.C. stoves had those. Justin325 that's it, primary air flapper thingy. I would look closely at the ash pan door to be sure it's closing securely and seals all the way around. Encores are notorious for ash pan door issues. Also tap the glass panes. If they rattle at all, regasket them . Another classic Encore problem area
 

Justin325

New Member
Nov 17, 2022
9
Ohio
Excellent help here everyone!

I just filled it up half way and closed the flue damper and turned the air intake all the way down. The griddle temp creeped up just above 700 and I couldn’t get it to go down.

Definitely still getting air in somewhere
 

baerjo

New Member
Nov 28, 2022
48
Minnesota
I'm fighting a very similar issue, but my adapter pipe is on the outside of the flue collar, installed incorrectly. I would definitely seal that sucker as a first easy step. For me, I get to wait for the installer company.
 

30WCF

Feeling the Heat
Aug 31, 2016
352
North Carolina
Could you still see the flames through the collar with the bypass closed again after tinkering with the internals?