Draft issue?

[Sully]

We went to a new stove about a month ago. This insert was much larger it's osburn 2400. The old 2200 had a liner straight up and out. This unit had to have a 45 connected being it did not sit directly under liner. The only way to get it going really good is to keep door open. The 2400 has what looks like a tube right in front middle that let's primary air in I assume that's the only air inlet for primary. I can have hells inferno going and shut door and watch it just diminish with primary open. Unless it's really hot. Could this 45 have messed draft up. Or is this a insert issue. My draft should be great being it's a 28 foot chimney. Obviously it could be wood to. Even dry wood has hard time lighting off. What do you think

 

[DAKSY]

With a chimney that tall, I don't think it's a drafting issue. I've installed many inserts with the angled flex-to-rigid adapters & not had a problem with draft restrictions. Is the liner clean all the way up & is the cap clear?

 

[Sully]

Ok I didn't think it would be that 45 because it's hardly a tough angle Will check cap one of these days once the snow has decided to leave

 

[blades]

2nd on the cap particularly if it is the type with a screen mesh. The mesh gets clogged with creosote deposits and after awhile poof no more draft. Ain't saying it isn't you wood either so I'll go with a possible combination of the two.