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MINIMUM RISE HORIZONTAL TERMINATION
The ML39 Fireplace must be installed by a qualified Mendota approved serviceperson. When the minimum 18” (24” for
LPG) vertical and following 90-degree elbow is connected directly to this fireplace, the horizontal centerline of the
90
º
elbow will be 51 7/16” (57 7/16 for LPG) inches up from the floor level of this Fireplace.
Use "fixed" pipe sections in place of adjustable pipe sections 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 the fireplace in desired location. See Exterior Vent Locations and Restrictions page 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.
Measure from the floor level of the fireplace up 51 7/16”
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.
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 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 us-
ing 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 materials.
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" max-
imum
NOTE:
Vent Cap body shall not be recessed into wall or
siding.
