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9.3 Suitable Chimneys
Your wood insert will provide optimum efficiency and performance when connected to a 6-inch
diameter chimney liner. The connection to a chimney having a diameter of at least 5 inches
(Canada only) is permitted, if it allows the proper venting of combustion gases and that such
application is verified and authorized by a qualified installer. Otherwise, the diameter of the flue
should be 6 inches. The reduction of liner diameter to less than 6" should only be done if the total
height of the masonry chimney is greater than 20 feet.
9.4 Liner installation
We recommend the use of a chimney liner (rigid
or flexible) to ensure satisfactory performance.
To ensure an optimal draft, we also strongly
recommend adding a minimum of 12" rigid liner
between the top of the masonry chimney and
the rain cap.
In all cases, liners should be
installed
in
accordance
with
the
liner
manufacturer's
instructions,
including
instructions for extension above the masonry.
Use Listed Chimney Liners – UL 1777,
CAN/ULC S635.
In order to connect the insert to the liner, refer
to Section 9.5 Chimney liner installation.
When positioning
ATTENTION INSTALLER:
the unit in a fireplace opening prior to the flue
installation, install the insert into the opening
until the top lip of air jacket is flush with
fireplace facing.
If lag-bolts or anchors are to be used to secure
the insert, the hole locations should be marked
with the unit in place. Remove the insert and
locate the anchors.
Destination 1.5 Insert Installation and Operation Manual
39
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