DuraVent FasNSeal Single-Wall - Manual (Page 11)

11
Figure 7
jack and any combustibles.
4. When installing on a pitched roof, place
the Roof Flashing under the roofing material
up slope from the vent and above the roofing
material below the vent. Seal as required.
5. Install a Roof jack into the Roof Flashing to
ensure proper ventilation.
6. Now begin installing FasNSeal® from the
appliance upward.
7. Once FNS® reaches the roof line, slide the
Storm Collar onto the vent length. Install
vent length through the Roof jack and
Flashing. Slide the Storm Collar down to rest
on the Flashing, then seal as required. Add
additional vent lengths as needed, attach
Rain Cap, then tighten all connections.
8. To inspect the vent system, open the
locking band and remove the Rain Cap.
VENTINg THROUgH A MASONRY
CHIMNEY
Supporting a FasNSeal vertical stack through
a masonry chimney presents a series of
challenges not faced by other vertical
installations. The narrow and enclosed space
of a chimney prevents easy access to most of
the chimney interior. Installing wall brackets
or other types of support can be
nearly impossible.
As an alterative method to supporting
installations that pass through a masonry
chimney, a series of tension wires and
FasNSeal support clamps can be used. Refer
to Figure 7 for a typical installation. It is
critical to use enough clamps and proper
bracing to safely support the weight of
the entire vertical stack. DuraVent, also
recommends the use of a FasNSeal drain
fitting at the base of the vent.
In all situations, it is important to make sure
that all workmanship meets and/or exceeds
jurisdictional requirements. Contact the
local building inspector regarding codes or
regulations that might be applicable to your
installation. These instructions are based on
an installation through a typical masonry
chimney. Consult the DuraVent Engineering
Department, at 800-835-4429 or via e-mail
at [email protected], if your
installation has any significant variations.
BEFORE BEgINNINg THE
INSTALLATION
Before beginning an installation within a
masonry chimney, a steel support plate
must be constructed in order to anchor the
supporting tension wires. This plate is not
supplied by DuraVent. The thickness of the
plate will vary depending on the amount of
weight being supported.
A hole ½” larger than the outside diameter
12”
MINIMuM
20’
MaxIMuM
DIStaNCe
BetWeeN
Support
ClaMpS
FASNSEAL FIRESTOP
CONDENSATE DRAIN
FaSNSeal Support
ClaMp
teNSIoN WIre
FaSNSeal Support
ClaMp
teNSIoN WIre
Steel plate
StorM Collar
raIN Cap