So I am installing a new Napoleon wood burning furnace. I am having to relocate the thimble through a block wall to a higher position and the clay lined chimney measures 7x7 inside the clay liner and it is cracked. The 6 inch exhaust runs 18 inches through the wall and chimney before it has a 90 degree bend upwards into the chimney. Then it runs 22 feet straight up. I figure I need a 6 inch liner but no one around here knows enough about them. I can't find anyone who has one that I know or even any place that sells them. So, I have researched the subject here but i have more questions.
1. Flex liner vs. rigid? I assume flex will install easier. Based on some other "ameuter" work on this house I cannot be sure the chimney is perfectly straight or in line. Would the rigid last longer over flex liner? The cost doesn't seem to far off from each other. Is one better quality over another?
2. Insulation? The chimney is exterior, but our climate is quite mild here in Arkansas. With the previous stove the chimney vented very well. I am actually worried about it venting to well. Is this possible? The furnace will not use a manual damper in the exhaust like the stove I had, so..
3. Do I use a stainless thimble in the wall to connect to the tee? Or use a clay thimble that I mortar to the tee? I would assume this is a no no.
Thanks.
1. Flex liner vs. rigid? I assume flex will install easier. Based on some other "ameuter" work on this house I cannot be sure the chimney is perfectly straight or in line. Would the rigid last longer over flex liner? The cost doesn't seem to far off from each other. Is one better quality over another?
2. Insulation? The chimney is exterior, but our climate is quite mild here in Arkansas. With the previous stove the chimney vented very well. I am actually worried about it venting to well. Is this possible? The furnace will not use a manual damper in the exhaust like the stove I had, so..
3. Do I use a stainless thimble in the wall to connect to the tee? Or use a clay thimble that I mortar to the tee? I would assume this is a no no.
Thanks.