8
Vent Termination
The RF24 is approved for
Vertical Co-Linear Termination Only
. Two
3” diameter liners are required from top to bottom. The vent liners must
be connected to the proper collars (intake and exhaust) or the unit will
not operate properly. The method of
fl
ashing will depend on whether
the liners are installed into a rectangular masonry or round factory-built
solid-fuel burning chimney.
It is important to seal the gap at the top
of the chimney in either case to avoid convective air loss up the
chimney
. The integrity of the air-cooled function of factory-built chimney
systems must be maintained when installing terminations.
Termination
of the chimney may need to be completed after the RF24 fi rebox is
installed and the slack vent liner pulled up—see Section Firebox
Installation.
Existing Square Chimneys
559CLT
Co-Linear Terminal and
559SFK
Square Flashing Kit are
recommended—see list of approved venting accessories on page 27.
Cut
fl
ashing kit to size. Allow extra around perimeter for drip edge to
be formed on site. Seal
fl
ashing to top of chimney using sealant (not
supplied). Fasten terminal to
fl
ashing using sheet metal screws as
shown.
Existing Round Factory-Built Chimneys
The 559CLT terminal is designed to
fi
t existing 7” or 8” diameter factory-
built round chimneys without requiring additional
fl
ashing. Ensure the
installation of the terminal seals off the top of the chimney space to
avoid convective air loss. The diagrams below show a typical terminal
installation for an 8” diameter air-cooled chimney system.
559SFK Flashing
(cut to required
size and form
drip edge on site)
559CLT Terminal
Fasten to Flashing
with Sheet Metal
Screws (3 locations)
2 - 3” Flex Liners
18”
18”
Existing Air-Cooled Chimney
(Factory-Built Fireplaces)
Remove Top
Portion of
Terminal
Maintain Air-Cooled
Function of Existing
Chimney System
Install 2 - 3” dia.
Flex Liners
Identify
which
Liner is
Exhaust
EXH.
Connect Liners to
Corresponding
Collar on Terminal
using Sheet Metal
Screws (longer
collar is exhaust
collar)
EXH
7-5/8” dia.
10” dia.
10”
11”
559CLT
Fasten Terminal
to Flashing
(3 locations)
Ensure Flashing
Remains over
Air-Cooled
Openings
559CLT Termination
Ensure Exhaust
Portion of Chimney
is Sealed at Top
