HEI150 Wood Insert Fireplace Installation and Operation Manual
46
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, ULC S635 and CAN/ULC S640.
To connect the insert to the liner, refer to Section 9.5 Chimney liner installation.
ATTENTION INSTALLER: When positioning 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.