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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 perpen-
dicular to the wall. The height of the opening must be lo-
cated 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, i.e. ma-
sonry block, brick, etc., a 9-inch diameter hole is accepta-
ble.
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 de-
termined by the location of the fireplace relative to the wall.
For a normal installation where this fireplace is installed di-
rectly against an exterior wall constructed using 2x4 lum-
ber 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 horizon-
tal runs and horizontal discharge elbows).
A wall thimble must always be used when penetrating com-
bustible 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 caulk-
ing.
NOTE:
Combustible wall thickness must be 4" to 8" maxi-
mum
NOTE:
Vent Cap body shall not be recessed into wall or
siding.
