Fireplace Insert Without Chimney Liner

While the original masonry fireplace and clay flue liner can be used as a passageway the original chimney flue can not be used to vent the wood burning insert.

Fireplace insert without chimney liner.

A connector and chimney system designed with the wood burning insert in mind would be a necessary addition to the wood burning stove inserted into the fireplace. Grout shall be prevented from bonding with the flue liner so that the flue liner is free to move with thermal expansion. For chimneys more than 40 inches 1016 mm wide two additional no. Please remember these liners are sold in 5 increments 15 20 25 so for instance an 18 chimney will need a 20 liner.

A different equation when installing an insert into a fireplace the size of an insert s firebox is smaller than that of the masonry firebox so the existing masonry flue may now be disproportionately large. The chimney draft is created like a tornado when a warm front meets a cold front. A liner going to an insert or stove in the fireplace will be measured from the top of the chimney to the top of the insert or stove or the center of the hole on the back of the stove. You don t want to play with fire and if you don t have a liner then you re in danger of burning down your house.

4 vertical bars shall be provided for each additional flue incorporated into the chimney or for each additional 40 inches 1016 mm in width or fraction thereof. Stoves inserts connected to fireplaces.