I have a big prefabricated fireplace that I want to put a woodstove inside of. I already have another freestanding woodstove to heat the cabin, but sometimes could use a little more heat, and this big fireplace does not work very well so its not a big loss to put a stove in it. The fireplace is a Heat n Glow Exclaim 50, and it's manual says this is acceptable so long as the chimney is lined. The fireplace opening is 50 inches wide, and the fireplace and chimney are in an external wood chase. The inner diameter of the uninsulated double wall chimney is 11 inches, so I could run an insulated 6" class A chimney inside it. The 11 inch chimney ends up top in a square termination cap.
I'm thinking my choices are:
1 - End the 6" insulated chimney pipe up in the existing square cap, leave the space between it and the 11" inner pipe open at the top, and the space between the 11" inner pipe and the larger outer pipe open too. Add some brackets to keep it centered. Simple.
2- Remove the existing square cap, allow the old chimney air spaces to vent into the top of the chase below it's roof deck, and put a new flashing and cap on the 6" chimney pipe. I'm not sure if I will be able to pull out the old chimney sections, and worry that hot air from there would accumulate in the top of the chase?
Anyone know how this should be done? The old chimney is a SL1100 series and the manual says the sections just push together and cannot be undone.
The manual says the following:
C. Wood Burning Inserts WARNING! Risk of Fire! Improper installation of wood inserts may cause fireplace or chimney system to overheat. If a wood burning insert is being installed in this fireplace, Hearth & Home Technologies recommends full reline of the chimney.• Cooling air openings at the top of the chimney must not be obstructed in any manner. • Hearth & Home Technologies recommends securing the reline at the top of the flue and using the cap certified for use with this fireplace system
I'm thinking my choices are:
1 - End the 6" insulated chimney pipe up in the existing square cap, leave the space between it and the 11" inner pipe open at the top, and the space between the 11" inner pipe and the larger outer pipe open too. Add some brackets to keep it centered. Simple.
2- Remove the existing square cap, allow the old chimney air spaces to vent into the top of the chase below it's roof deck, and put a new flashing and cap on the 6" chimney pipe. I'm not sure if I will be able to pull out the old chimney sections, and worry that hot air from there would accumulate in the top of the chase?
Anyone know how this should be done? The old chimney is a SL1100 series and the manual says the sections just push together and cannot be undone.
The manual says the following:
C. Wood Burning Inserts WARNING! Risk of Fire! Improper installation of wood inserts may cause fireplace or chimney system to overheat. If a wood burning insert is being installed in this fireplace, Hearth & Home Technologies recommends full reline of the chimney.• Cooling air openings at the top of the chimney must not be obstructed in any manner. • Hearth & Home Technologies recommends securing the reline at the top of the flue and using the cap certified for use with this fireplace system
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