Mama Bear Fischer questions

[Michbrog23]

Good morning, we purchased a Mama bear to install, but noticed a few small hairline cracks near the back of stove and in pipe leading out. Was checking to see if these needed corrective action before installing or normal wear and tear with the stove, thanks so much!

 

[bholler]

Good morning, we purchased a Mama bear to install, but noticed a few small hairline cracks near the back of stove and in pipe leading out. Was checking to see if these needed corrective action before installing or normal wear and tear with the stove, thanks so much!

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Yes it absolutely needs fixed.

 

[Michbrog23]

Thank you for the quick response, any idea what would be the scope of repair/process?

 

[coaly]

Looks like the outer half of outlet pipe has been replaced? It is normally one piece with no seam.

Stop drill cracks with 1/8 inch drill bit, about 1/4 or 3/8 inch away from crack end. (There is a microscopic crack you can’t see farther than the known crack) This will allow the crack to progress into the drilled hole. The radius of the hole stops the crack from progressing. V-grind and weld cracks.

 

[Michbrog23]

Thank you for the reply, it does appear that the outer half was replaced, just feel really dumb I didn’t notice that. The crack in the center of the outlet pipe seems pretty significant, we’re talking about putting some drill holes in there and also on the back plate, near the seams of the outlet pipe?

 

[Michbrog23]

Also any particular drill bit you’d recommend? Thanks again

 

[bholler]

Also any particular drill bit you’d recommend? Thanks again

Before going to the trouble of fixing it make sure you have the large clearances needed for an old stove. Be sure your local code office will allow you to install an unlisted stove. And that your insurance will insure a he with one installed in it

 

[Michbrog23]

In regards to clearance, do you mean to combustible? Or the in the flue/chimney area?

 

[bholler]

In regards to clearance, do you mean to combustible? Or the in the flue/chimney area?

Clearance to combustibles from the stove. You do need some from the chimney but there is no difference between this using this stove or a new one

 

[Michbrog23]

How much do you recommend from the chimney itself? We we’re going use an Olympia pre-insulated hybrid liner, into a masonry chimney.

 

[1kzwoman]

In regards to clearance, do you mean to combustible? Or the in the flue/chimney area?

Welcome to the forum. You will need to check ALL clearances and possible need for floor protection as well.

 

[bholler]

How much do you recommend from the chimney itself? We we’re going use an Olympia pre-insulated hybrid liner, into a masonry chimney.

With an insulated liner you don't need any clearance. But the wall passthrough needs to be done right

 

[Michbrog23]

The chimney it’s going into was actually used for coal, so the liner would be going directly up in the masonry chimney. I can post photos shortly

 

[Michbrog23]

This is where it would be going

 

[coaly]

Only stop drill the tiny cracks on the rear sheet. If you are not welding it yourself, the welding shop should drill and grind before welding.

This is a unlisted stove, and can be only legally used in a pre-existing installation in most states. Kentucky has adopted the 2015 International Building Code where the Mechanical Code requires all appliances to have a UL Label for a new installation.

Most insurance companies also require all appliances to be UL Listed as well, even existing appliances. That is not a law, or code, it is their own rules and regulations they can make.

This stove will require 18 inches of floor protection in all directions, so if the existing floor protection is smaller, a newer stove with less protective requirements would alleviate increasing your floor protection size.

 

[Michbrog23]

Thanks so much, seems like a newer stove may be a better option, given the clearance to combustibles, any recommendations on a good rear vent free standing brand?