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INSTALLATION INTO AN EXISTING
MASONRY CHIMNEY (USA ONLY)
Step 1.
Before cutting any holes, assemble the desired
sections of direct vent pipe to determine the center
of the masonry penetration.
Step 2.
Once the center point of the penetration has been
determined, cut a 6" (152mm) diameter hole in the
masonry. If the hole is too large, the retro connector
might not mount properly; if the hole is too small,
the appliance might starve for intake air. If there
is a frame wall in front of the masonry wall, cut
and frame a 10" (254mm) square opening in the
wall (centered around the 6" [152mm] masonry
opening). If there is sheet rock only (no studs) in
front of the masonry the 10" (254mm) opening is
still needed, but does not need to be framed. This
allows the retro connector to mount directly on the
masonry and provide the correct clearances to
combustibles (see Figure 22).
Step 3.
Secure the flashing (SDV #705C) to the top of the
masonry chimney using a bead of non-hardening
sealant-adhesive. If the flashing is larger than the
top of the chimney, cut and fold flashing as needed
to fit chimney (Figure 23).
Step 4.
To determine the length of flex needed, measure
from 3" (76mm) above the top of the flashing down
to the level of the opening. Add the distance from
the center of the chimney out through the wall. Cut a
piece of 4" (102mm) flex to this length (extended to
its nominal length). Be sure to leave 2"-3" (51mm-
76mm) of flex above the existing chimney to allow
for connection to the termination kit.
Step 5.
Connect the flex liner to the top adapter using three
sheet metal screws (see Figure 19, page 26).
Step 6.
Feed the flex liner through the flashing into the
chimney. Carefully feed the flex liner down the
chimney to the bottom and out the opening in the
masonry wall, forming an angle to line up the flex
liner with the vent opening on the appliance.
WARNING: Do not let the flex liner sag below
the level at which it will connect to the appliance
or connector. This could allow hot gas to
become trapped and potentially become a fire
hazard. The flex liner path should always be
sloped up toward the termination cap.
Step 7.
If additional lengths of flex liner are needed to span
the chimney height, use a flex coupler to connect
the pieces of flex liner together. Connect the flex
to the coupler by using four sheet metal screws for
each side (Figure 24).
03/21/01 #250-6120
QFP 30 Direct Vent Gas Fireplace
VERTICAL INSTALLATION, CONT.
(4) MASONRY BOLTS
(NOT INCLUDED)
STUDWALL
10" x 10" FRAMED
OPENING IN WALL
RETRO
CONNECTOR
WALL THIMBLE
COVER
CUT AND BEND FLASHING AS
NEEDED TO FIT CHIMNEY
SEALANT-ADHESIVE
FLEX LINER
FLEX COUPLER
SHEET METAL
SCREWS
FIG. 22
MASONRY
CHIMNEY
FIG. 23
FIG. 24
Page 27
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