King 40 Install

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The King 40 is getting close to being functional, but my installer has run into a snag. The adapter in the ceiling support that should join the exterior stainless steel to the black double wall does not fit snuggly to the double wall.
[Hearth.com] King 40 Install


I sent pictures to the dealer, who contacted the supplier Olympia Chimney Canada, or Ventis, or SBI - not sure how they structured. They note that the box should come down further through the ceiling, but seem confused why the adapter isn't coming through the box more.
[Hearth.com] King 40 Install


It looks like it's through as far as possible, and the exterior pipe is very snug, but on the double wall side it's very loose and only goes about an inch deep. It's like the adapter is an inch too short on the double wall side. The double wall is definitely the correct orientation and fits the stove adapter on the other end well.
[Hearth.com] King 40 Install


Any ideas what's going on here?

My installer will give them a call tomorrow and try to see if he can get some more detailed instructions about how the parts are supposed to go together because their instructions aren't providing any clues.
[Hearth.com] King 40 Install
 
I think I may have an explanation. I think the two sections of pipe were put together in the wrong orientation as there's screw holes on the same end, and none on the other, suggesting one set is for the ceiling adapter and the other for the stove side adapter.
Also the two sections are now so tightly bound together that they can't be pulled apart by two people.
[Hearth.com] King 40 Install
 
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that will do it.
 
They got it apart this morning, but say that's the only way the two pieces could possibly go together, so back to thinking an adapter is missing.
 
They got it apart this morning, but say that's the only way the two pieces could possibly go together, so back to thinking an adapter is missing.
Not surprising, because that's the way mine is, too. The upper holes are to fix the thing to the ceiling box and the lower ones are to fix the length of the extension once installed.
But mine looks similar, I think there's also only an inch coming out of the ceiling box, but my pipe is snug against it and secured with the screws. At least we don't have any smoke spillage there.
FWIW, that's actually not a very good solution, because when driving the screws in it will create sharp points on the inside of the outer pipe, which then creates visible scratches all along the inner pipe when you collapse it again to clean. Ask me how I know...