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P a g e
ZERO RISE HORIZONTAL TERMINATION
The ML47 Fireplace must be installed by a qualified Mendota approved serviceperson.
When the minimum 18” vertical and following 90-degree elbow is connected directly to this fireplace, the horizontal center-
line of the 90
º
elbow will be 53” inches up from the floor level of this Fireplace.
See Figure 11, MASTER FLUE VENTING REQUIREMENTS CHART and Figure 14 and Figure 13 below.
Figure 13
Use "fixed" pipe sections in place of adjustable pipe section s wherever possible. 1000
º
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.
Position fireplace in desired location. See Figure 13 for 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.
M
easure from the floor level of the fireplace up 53” inches
[add ¼” rise for every foot of horizontal run] and mark wall
directly at the center of where the vent pipe will penetrate
the exterior wall.
Cut and frame a 10-3/4" wide x 10-3/4" high opening in
the wall. The hole must be positioned so the vent system
will run level or 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 ob-
structed. If wall being penetrated is non-combustible ma-
terial, i.e. masonry block, brick, etc., a 9-inch diameter
hole is acceptable.
Figure 14:
Attach the 18” vertical section to the fireplace starter adapter. Attach a 90-degree elbow then a 6” horizontal section. Be
sure all vent component connections are in their fully twist-locked position
and are leak-proof. Be sure 1000
º
sealant is used on the inner pipe joints of
all pipe sections manufactured by Simpson DuraVent. The length of the hori-
zontal 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).
A wall thimble must always be used when penetrating combustible wall ma-
terials.
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
NOTE:
Vent Cap body shall not be recessed into wall or siding.
