Minimum Rise Through-The-Wall Venting - Mendota DXV-42 Installation & Operating Instructions Manual

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MINIMUM RISE THROUGH-THE-WALL VENTING

The minimum vertical rise required for through-the-wall horizontal vent terminations, for units using Natu-
ral Gas, and installed below 4,000 feet, is 17" from the top of the fireplace to the centerline of the 90º el-
bow. The 17" height is achieved using one 12" pipe section, vertically, and a 90 degree elbow. The
maximum horizontal length pipe allowed using this configuration is 6" (Duravent) or 7" (Amerivent).
NOTE: Always use the most vertical rise the installation allows. This maximizes efficiency and
flame appearance. This is especially true for LP gas installations and for installations at higher alti-
tudes. Always Maintain 1" Clearances From Vent Pipe To Combustibles, 2" Above Pipe On Hori-
zontal Runs. Use "fixed" pipe sections in place of adjustable pipe sections wherever possible. Inner
joints of all DuraVent pipe sections must be sealed using 2000
do not require this sealant. Do not fill air spaces with insulation or other material.
For LP gas or high altitude minimum height installations (above 4,000 ft. but below 7,500 ft.), 45
elbows must be used instead of 90
nical Support Hotline for further strict requirements.
NOTE: This requires 32" minimum distance from top of unit to the center of opening in wall for the hori-
zontal pipe to exit. CAUTION: If 90
directly off the top of the fireplace.
IMPORTANT: REFER TO DRAWINGS ON PAGE 12 & 13 WHILE FOLLOWING THESE
INSTRUCTIONS.
The DXV-42 Fireplace must be installed by a qualified Mendota approved serviceperson.
1. Position fireplace in desired location. See pg. 8 for guidelines on proper vent cap placement on the ex-
terior 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.
2. Measure from the top of the fireplace up minimum 17" to centerline of 90
4) and mark wall directly at the center of where the vent pipe will penetrate the wall.
3. Cut and frame a 9" x 10" opening in the outside wall. The hole must be positioned so the vent system
will run level or have a ¼ " rise AND be perpendicular to the wall. The height of the opening must be
located to meet all local and national building codes and not allow the termination to be easily blocked
or obstructed. If wall being penetrated is non-combustible material, i.e. masonry block, brick, etc., a 7-
inch diameter hole is acceptable.
4. Assemble the components to the fireplace adapter with pipe seams oriented toward the wall or floor --
as much out of view as possible. Be sure all component connections are in their fully twist-locked posi-
tion and are leak-proof. Be sure 2000
joints of all DuraVent pipe sections.
*NOTE: DO NOT SEPARATE TELESCOPING SECTIONS. USE AS COMPLETE ASSEMBLIES
5. The length of the horizontal piece that fits through the wall will be determined by the thickness of the
wall. When installed, the end of the horizontal piece must be flush with the exterior wall of the home.
There MUST be a minimum of 1" air space clearance to combustibles from all vent pieces (2" above
horizontal runs).
6. A wall thimble must always be used when penetrating combustible wall materials. The wall thick-
ness must be 4" to 8" maximum to accommodate the wall thimble.
7. 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.
WARNING: Venting terminal should not be recessed into the wall or siding.
elbows. For altitudes higher than 7,500 feet, call Mendota Tech-
º
elbows must be used, a 3-foot vertical starter section must be used
º
sealant(#65-06-00909) is used on the inner pipe
ºMillpak
1
3
sealant. American Metals pipe joints
º
elbow (See
º
º
. Pg.
FIGURE 1