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13
XXV Pellet Stove
This method can be done with or without a ue liner.
Without a liner, the damper area must be sealed off with
a steel plate. Kaowool, mineral wool or an equivalent
non-combustible insulation is recommended on top of
the steel plate to minimize condensation. In this method
a cap should also be installed on the chimney to keep
out rain.
Some places in the US and Canada require that the
vent pipe extend all the way to the top of the chimney.
Per ULC S628.
Be sure to use approved pellet vent pipe ttings.
Seal pipe joints with silicone or aluminum tape in
addition to the sealing system used by the manufacturer.
Pipe size should be increased to 4" using this method.
This method provides excellent venting for normal
operation. This method also provides natural draft in
the event of a power failure.
In this method a 4 inch liner is installed the entire
length of the ue. Whether using a rigid or exible liner, a
cap should be installed on the chimney to keep out rain.
Fig. 14
Fig. 15