DuraVent DuraFlex AL Installation - Manual (Page 11)

11
Figure 17
Figure 19
Figure 18
OPTIONAL HIGH WINDCAP
OPTIONAL HIGH
WINDCAP
STANDARD
CAP
SUPPORT
FLex LINeR
FLex COUPLING
SHeeT MeTAL
SCReWS
CAP
B-VeNT
PIPe
SHeeT
MeTAL
SCReWS
B-VeNT
MALe
ADAPTOR
STORM COLLAR
TOP PLATe
SeALANT
TERMINATIONS
Step 1. When terminating your Flex
installation, ensure the Flex protrudes
4-5 inches over the top of the masonry
chimney, as shown in Figure 13. Trim
the base of the Top Plate to fit on the
masonry chimney as needed.
Step 2. Slide the Top Plate over the
Flex and seal the Top Plate to the
masonry chimney using a bead of
non-hardening sealant around the top
of the chimney. Refer to Figure 14.
Step 3. After sealing the Top Plate
to the masonry chimney, attach the
DuraFlex AL Cap to the Flex by
tightening the fast connect band, as
shown in Figure 14. Push the Cap
down until it rests on the Top Plate’s
collar.
TYPE B GAS VENT TOP
TERMINATION
The installation procedure for use of
insulated Type B Gas Vent near the
top of the masonry chimney, or for
extending the height of the venting
system above the masonry chimney is
as follows:
Step 1. you will need a B-Vent Cap
(standard or high wind), Storm Collar,
Top Plate, Male B-Vent Flex Adaptor,
and a length of B-Vent Pipe to extend
the Cap as needed (See Figures 16 &
17).
Step 2. Attach the male B-Vent Flex
Adaptor to the flex with the locking
lug and four sheet metal screws, as
shown in Figure 16.
Step 3. Attach a suitable length of
double-wall Type B Gas Vent pipe to
the male B-Vent Flex Adaptor. After