Hearthstone
Clydesdale Fireplace Insert Model 8491
Page 11 of 35
remove the baffle/plenum and drop the flue
collar into the firebox for attachment of the
flue liner. If the baffle/plenum and flue collar
do not need to be removed, you can skip to
step 7.
Step Five
: Change the position of the flue collar if
necessary. To remove the flue collar, reach in
through the flue collar and locate the four bolts
threaded down through the insert top on the corners
of the flue collar. Remove the nuts with a small 7/16”
wrench. Lower, and turn the collar 180 degrees to
the forward position. Fit the four holes on the collar
over the four bolts. Turn the nuts back onto the bolts
and tighten them with the 7/16” wrench. The insert
can now be placed into the fireplace opening and the
flue liner (meeting UL 1777), can be attached.
Photo 3 – Collar Mounting Detail (Inside Firebox)
Photo 4 – Air Shroud Installed (default)
Photo 5 - Collar in Default 30º Aft Position (air
shroud removed)
Photo 6 – Collar in Forward (90º Position)
NOTE
: In order to connect the liner to the flue
collar properly with three screws when the flue
collar is in the aft (default) position, you must
remove the baffle/plenum and drop the collar into
the firebox. Removing the baffle will also allow
you to connect the flue liner to the flue collar in
the forward position if space above the insert
installed in the fireplace is limited.
