DuraVent Type B Gas Vent - Manual (Page 15)

15
Figure 27
Figure 28
Figure 29
non-hardening sealant to secure the flashing to
the masonry (Figure 28).
(h). Storm Collar. Slide the Storm collar over
the pipe down to top of the Flashing. Secure the
Storm collar in place with at least (3) 1/4” sheet
metal screws (Figure 29). Do not penetrate the
inner liner. The Storm collar and Flashing will
support the weight of the vent assembly. use
non-hardening sealant around the top of Storm
collar to make a weatherproof seal.
(i). Termination Cap. Install the Termination
cap as shown in Figure 28. This concludes
the procedures for installing a gas fireplace
in an existing masonry fireplace. conduct a
final inspection of the system, and verify that
you have complied with the manufacturer’s
installation instructions.
4. Gas Appliance Venting Into the Side Wall
of a Masonry Chimney.
(a). Locate Appliance. Set the appliance
in it’s desired position, and mark the center
of the hole where the lateral pipe Section
is to pierce the masonry chimney. Ensure
the manufacturer’s requirements have been
SCREWS
USE (3)¼" SCREWS. DO NOT
PENETRATE INNER WALL
TOP VIEW SIDE VIEW
MASONRY
ANCHORS
NON-HARDENING
SEALANT
SEALANT
NON-
HARDENING
B-VENT PIPE
SECTION
STORM COLLAR
TALL CONE FLASHING
followed, particularly in regards to distances
from combustible surfaces. Refer to Figure 30.
(b). Hole in Masonry. Move the appliance
aside, and break out the masonry, forming
a hole large enough for the pipe Section to
get through, and also large enough to reach
through and hold the Tee, while connecting
the horizontal pipe Section. an alternate
procedure is to make the hole only large
enough for the pipe Section to pass through,
and construct an access gate on the other
side of the masonry chimney. Do not mortar
directly to the pipe, but use a Mortar
Sleeve instead.