49
FV42
85-03-01068
Minimum Rise with Horizontal Termination
A maximum horizontal run of 12” is allowed if a 9” vertical starter section and one 90° elbow is connected
directly to this fireplace’s flue starter collar. The horizontal centerline of the 90
º
elbow will be 46 ⅜” up from
the floor level of this fireplace.
See the Master Flue Venting Requirements Chart and figures below for specifics.
Use "fixed" pipe sections in place of adjustable pipe sections wherever possible. 1000
º
F sealant must be used
on
all
inner pipe joints that do not have factory-installed gasket material.
Always maintain 1" clearance from vent pipe sides and
bottom to combustibles, 3" clearance on top of pipe on
horizontal runs and on top of horizontal discharge elbows. Do
not fill air spaces with insulation or other material.
Warning
: Verify your venting matches these dimensions
before cutting a hole in the wall. Exact measurement can vary
depending on the manufacture of the venting.
1. Position fireplace in desired location. See guidelines on
proper vent cap placement on the exterior of home.
Check to determine if wall studs are in the way when
venting system is attached. If this is the case, you may
want to adjust the fireplace location or modify the
exterior wall framing to allow the vent system to
penetrate the wall.
2. Measure from the floor level of the fireplace up 46 ⅜”
and mark wall directly at the center of where the vent
pipe will penetrate the exterior wall.
3. Cut and frame a 10 ½” wide x 10 ½" high opening in the
wall. The hole must be positioned so the vent system will have a ¼" rise per foot of run and be
perpendicular to the wall. The height of the opening must be located to meet all local and national
building codes. Do not allow the termination to be easily blocked or obstructed. If wall being penetrated
is non-combustible material, e.g., masonry block, brick, etc., an 8” diameter hole is acceptable.
4. Attach the 9” straight section to the fireplace starter adapter. Attach a 90° elbow to the top of the 9”
vertical starter section and rotate and lock in position. Attach a horizontal section to the 90° elbow. Be
sure all vent component connections are in their fully twist-locked position and are leak-proof. Be sure
1000°F sealant is used on the inner pipe joints of all pipe sections manufactured by Simpson DuraVent.
The length of the horizontal piece that fits through the wall will be determined by the location of the
fireplace relative to the wall. For a normal installation where this fireplace is installed directly against an
exterior wall constructed using 2x4 lumber or 2x6 lumber, only a 6” horizontal section is required. There
must be a minimum
of 1" air space clearance to combustibles from all vent components (3" above
horizontal runs and horizontal discharge elbows).
5. A wall thimble must always be used when penetrating combustible wall materials.
6.
From the exterior of the home, slide the horizontal vent cap over the end of the horizontal pipe and
tightly secure the cap to the wall with screws. Seal with a high-quality caulking
.
Note:
Combustible wall thickness must be 4" to 8" maximum. Vent cap must not be recessed into wall or
siding.
f i r e - p a r t s . c o m
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