New chimney elbows move freely

I just got done installing a new wood stove. I had to add two 90 degree elbows in the chimney. This is the first wood stove I've ever installed. I've never seen these type of elbows where I can pivot all the joints and change the angles it's on. Well, it's all together now, but if I were to push on the bottom of the silver pipe, the chimney will move now. It's because the elbows still pivot. I tried popping a screw through the elbow on the short side hoping it would stop it from pivoting but it still pivots just as easy as ever. How do I stop it from pivoting? I'm actually wondering now if there's some kind of bonding gluish type stuff I should be using in the joints. Is that it or is there some other secret? Attached is a pic.

Also, on a side note, is it required to have 3 screws holding the single wall pipes together? It sounded like from the stove manual it is. I just put 2 in each. It was a weird ange and such close area to work in, I was having a hard time getting a third one in.

begreen said:

Yes, 3 screws 120º apart are required for each connector pipe joint. And there is a special adapter to securely attach the connector pipe to the class A pipe (shiny pipe).

This is not an ideal setup. You don't want to come off the top outlet with a 90º elbow. It looks like some of the class A pipe needs to be removed so that you can at least come off of the stove with a 45º elbow, a short piece of pipe, then another 45 to make the offset.

But before doing that, for safety sake, please post some more pictures of the entire installation. Normally one would not have the class A pipe coming down too far past the ceiling.

Click to expand...

I was trying to keep the single wall away from combustable wall. I didn't put the chimney through the ceiling, so I'm just working with what I have. The previous wood stove was even closer to the wall because it just came straight down from the ceiling and went into the wood stove. That wood stove was ancient old but the house is only 15 years old and the house wasn't built with it, so they did it only in the last few years and it passed 3 sets of inspections before we bought the house.

I wanted to move the stove away from the wall. I've had a few comments from people that said it looked weird the way I have the two pieces of double wall coming down from the ceiling. (This is the way the last guy did it before us buying the house and passed inspections this way.) I added the 3rd one. But the two pieces are there because the double wall is less than a foot away from the wall itself. I added that last little piece because if I switched to single wall after the second piece, then I'd have a few inches of single wall less than a foot from the wall before it's in front of the rocks. I figured it was safer.

Also, i'm not sure what happened but after I posted this, then I was out talking to people about it, I went back home and tried pushing on the pipe again and it doesn't move around anymore. It's pretty secure. So, I think that part is good now.

The one thing I didn't do was put 3 secrews in the pipes where they connect. I put only 2 in. Is that OK? I doubt it's going anywhere. It's just tight quarters in that spot trying to get screws and a drill in there, I was lucky I got 2 in each spot.

Next Wednesday, I'm having a stove company come out and look at it because I'd like someone that is trained in this give me the thumbs up approval that it's safe.