Fisher grandpa bear

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bhuseth

New Member
Dec 6, 2022
1
Underwood
I am building a new cabin off grid. I have Fisher grandpa bear stove that I am planning to install. I believe it is a wide body grandpa bear it measures 30 1/4" across the outside (6 1/2 fire bricks). It has a 10" out the back outlet. I have a few questions
1) can I neck it down to an 8" chimney?
Most of the Fisher stoves I have seen only have an 8" outlet.
2) want is best placement for a baffle to be installed?
3) in the Fisher Manuel it calls for a 39 1/2" clearance from the corner of each corner to the wall with today's building materials (steel studs and cement board) can the distance be closed in some ? With that distance the stove gets way out in the room.

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coaly

Fisher Moderator
Staff member
Dec 22, 2007
4,799
NE PA
Yes, you can reduce to 8. It is technically against code to reduce smaller than stove outlet. 8 inch was standard.

The baffle size and exhaust square inch area depends on chimney.

Clearance to combustible wall is 36 inches from stove to wall in a corner or sidewall/backwall installation shown on page 10. Single wall pipe for a rear vented Grandpa requires 39 1/2 to walls in a corner installation. Single wall pipe to rear wall requires 28 and 45 to sidewall.

Clearances are to combustible building materials. Cement board and steel studs are not combustible, depending on what is attached on the outside.
 

georgia boy

New Member
Mar 25, 2023
1
Candler, NC
I am building a new cabin off grid. I have Fisher grandpa bear stove that I am planning to install. I believe it is a wide body grandpa bear it measures 30 1/4" across the outside (6 1/2 fire bricks). It has a 10" out the back outlet. I have a few questions
1) can I neck it down to an 8" chimney?
Most of the Fisher stoves I have seen only have an 8" outlet.
2) want is best placement for a baffle to be installed?
3) in the Fisher Manuel it calls for a 39 1/2" clearance from the corner of each corner to the wall with today's building materials (steel studs and cement board) can the distance be closed in some ? With that distance the stove gets way out in the room.

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would you consider selling me the 4 bear claws for $100? Please let me know. Thanks much