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21
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
See the appropriate sections and figures
shown throughout the venting section for
their installation requirements.
GEAR
CLAMPS
Adapter
(SV4.5RF)
Apply ONLY MIL-PAC BLACK HIGH
TEMPERATURE SEALANT (Catalog No.
10K81) to the outside surface of both
collars of the adapter (be especially
careful to fill the grooves of the outer
collar to be covered by the flexible
pipe) and slide flexible pipe over
inner and outer adapter collars.
NOTE: OUTER PIPE IS PULLED AWAY TO
SHOW THE DETAIL OF THE INNER PIPE
FLEX VENT
1³⁄₄ in. (44 mm)
Flexible Pipe and
Adapter Outer
Collar Overlap
1³⁄₄ in. (44 mm)
Flexible Pipe and
Adapter Inner
Collar Overlap
SECURING SCREW
(3 PLACES EQUIDISTANT
JUST BELOW GEAR CLAMP)
Attach Adapter to Appliance
Collar, or Secure Vent Sections
SECURING SCREW
(3 PLACES EQUIDISTANT
JUST BELOW GEAR CLAMP)
5" (127 mm)
Radius Minimum
Flexible Vent Section
Figure 48
Figure 47
VERTICAL OR HORIZONTAL VENTING USING
SECURE FLEX
KITS AND COMPONENTS
Secure Flex venting kits and components may be
used in any venting application in place of rigid
Secure Vent (SV4.5) direct vent components. All
restrictions, clearances and allowances that per-
tain to the rigid piping apply to the flexible venting.
Secure Flex
kits may not be modified; also,
under no circumstances may separate sections
of flex pipe be joined together.
Using adapter (SV4.5RF), Secure Flex kits
may be added to the end of a vent run made up
of rigid Secure Vent (SV4.5) vent sections
provided that doing so does not violate any of
the venting length, height, routing, horizontal
to vertical ratio requirements or clearance
considerations detailed in this manual.
Secure Flex kits come with an adapter that can
be fitted to the inclined channel end of the last
Secure Vent (SV4.5) vent section in a rigid
system in the exact same fashion as any other
Secure Vent section.
Align the dimpled end of the adapter over the
previously installed section or appliance col-
lar, adjusting the radial alignment until the four
locking dimples of the adapter are aligned with
the inlets of the four incline channels of the last
vent section or collar. Push on the adapter
until it fully engages, then twist the adapter
clockwise running the dimples down and along
the incline channels until they seat at the end
of the channels.
2. Apply a bead of Mill-Pac Black (700
°F) high
temperature sealant - Catalog No. 10K81) to
the outer adapter collar; to the grooves of the
collar which extend approximately 1 inch from
the end and to the flat surface, approximately 1³⁄₈
inches from the end.
3. Pull and extend the outer flexible vent pipe.
4. Slide the outer flex pipe over the adapter
collar. Ensure the flexible vent pipe completely
engages the adapter collar to a distance of 1³⁄₄
inches from the end, and that it is free from
damage or tears.
5. Slide the gear clamp down and tighten it
fully to secure the flexible vent to the adapter
outer collar approximately ³⁄₄ inch from the
end of the flex.
6. Install three screws 120 degrees apart
through the flexible vent pipe and into the
adapter collar just below the gear clamp to
provide additional security to the connection.
C. Route Flex Vent -
Ensure that the flex vent is properly routed to
provide the required clearance. Do not allow
the flexible vent to bend in a radius tighter than
5" (127 mm). Refer to
Figure 48
. Space out the
internal flex vent spacers evenly - approxi-
mately every 6 inches - and avoid kinking of
inner pipe. Support horizontal sections of flex
with metal straps at 2 foot (0.61m) intervals.
D. Install Firestop/Spacers at ceilings and walls -
When Secure Flex penetrates a wall or ceil-
ing, a firestop/spacer is required: use the
SF4.5 VF firestop/spacer for ceilings and the
SF4.5 HF firestop/spacer for walls.
Attach the flexible vent to the adapter as
follows
(also see Figure 47 ):
A. Install the Inner Flex Pipe -
1. Install the small gear clamp loosely around
the inner flexible vent pipe, push it back out of
the way.
2. Apply a bead of Mill-Pac Black (700
°F)
high temperature sealant - Catalog No.
10K81) to the inner adapter collar, approxi-
mately ¹⁄₂ inch from the end.
3. Pull and extend the inner flexible vent pipe.
4. Slide the inner flex pipe over the adapter
collar. Ensure the flexible vent pipe completely
engages the adapter collar to a distance of 1³⁄₄
inches from the end, and that it is free from
damage or tears.
5. Slide the gear clamp down and tighten it
fully to secure the flexible vent to the adapter
inner collar approximately ³⁄₄ inch from the
end of the flex.
6. Install three screws 120 degrees apart through
the flexible vent pipe and into the adapter collar
just below the gear clamp to provide additional
security to the connection.
B. Install the Outer Flex Pipe -
1. Install the large gear clamp loosely around
the outer flexible vent pipe, push it back out of
the way.
Note:
Secure Flex
vent must be attached to
Secure Flex
terminations only. DO NOT sub-
stitute
Secure Vent
terminations or the
Se-
cure Vent
adapter for
Secure Flex
compo-
nents. The collars of
Secure Flex
termina-
tions and adapters have a different diameter
than that used with the
Secure Vent
pipe.
Additionally,
Secure Flex
components have
an extended length center tube for use in
attaching the flexible vent.
E. Attach Flex Vent to Termination -
Secure Flex components can be purchased
separately and attached to bulk lengths of
Secure Flex flexible tubing cut to size at the
job site. Secure the flexible vent to the Secure
Flex terminations in the same manner (see
Figure 47 )
as it was attached to the adapter.