How to Fit a Multi-Fuel Stove

Inspect your chimney for cracks and make sure it is compatible with the multi-fuel stove. You may need to reline your chimney with an Underwriter's Laboratory-approved liner to retrofit it for the new application.

Remove the fireplace damper by removing the cotter pin that holds it in place.

Measure the dimensions of the chimney opening so you can construct a damper seal. This will create a barrier between the chimney and your home. Measure the front end of the flue opening at 2 inches above the fireplace. Then, measure the back end of the opening at the same height. Measure from back to front at the center of these edges, which is your width measurement.

Cut 24- or 26-gauge sheet metal to these dimensions, adding 1 inch to each side. Use a hammer and block to bend a 90-degree, 1-inch flange around the edges.

Set the stove into the fireplace and position the flue collar so it is within easy reach of the chimney flue. If you are installing a fireplace stove insert, set the insert as directed by the manufacturer. Adjust the top and side plates to seal the fireplace opening around the insert.

Insert the damper seal up in the chimney. Mark where the chimney pipe penetrates and cut it out with a hole-cutting drill attachment.

Set the damper seal in place and extend the chimney piping through the hole. Apply stove cement where the metal and pipe meet each other.

Attach flexible, stainless steel vent piping from the flue collar of the stove up through the damper seal. Extend this piping to at least the first flue tile.

Apply silicone sealant around the seam where the pipe and damper seal meet each other.