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VERTICAL RISE HORIZONTAL TERMINATION
The minimum vertical section required to be connected directly to the starter adapter on this fireplace is 48 inches when
used with a maximum horizontal run of 32 ft. If the total length of the vertical sections connected directly to the starter
adapter on this fireplace is between 4 feet and 41 feet, you are allowed a maximum 32 feet horizontal run. For other vent-
ing configurations within these maximum limits, see Master Flue Venting Requirements Chart, Zone A and Zone B.
Combined total length of all pipe sections (include restriction of elbows) in the vent system shall be less than 42 feet.
NOTE:
The horizontal run of vent pipe must be level or have a ¼" rise for every 1' of run toward the termination. Never
allow the vent to run downward. This will cause high temperatures and the possibility of a fire.
This ML39 Fireplace must be installed by a qualified Mendota service person
Position the fireplace in desired location. See Exterior Vent Locations and Restrictions page for guidelines on proper vent
cap placement on exterior of home. Check to determine if wall studs are in the way when vent system is attached. If this
is the case you may want to adjust the fireplace location.
Locate where vent pipe will pass through any ceilings and will penetrate the outside wall. Since vent pipe sections "over-
lap" we suggest pre-assembling and measuring the total vent pipe run so you can more accurately locate the point where
the vent pipe will penetrate the outside wall. Be sure all vent components are properly twist locked and leak-proof. Be
sure 1000
º
sealant is used in the inner pipe joints of all pipe sections manufactured by Simpson DuraVent.
Cut and frame a 10-3/4” wide x 10-3/4”” high opening in the outside wall openings and 10” x 10” opening in ceiling open-
ings. The outside wall hole must be positioned so the vent system will run level or have a ¼" on rise AND be perpendicu-
lar to the wall. The height of the opening must be located to meet all building codes and not allow the termination to be
easily blocked or obstructed. A ceiling fire stop spacer is required at any floor (ceiling) opening.
Connect vent pipe to the fireplace adapter on top of fireplace vent outlet.
The horizontal pipe must end flush with the exterior wall of the home. Horizontal pipe will require a proper support every 3
ft. of vent pipe. THERE MUST BE A MINIMUM OF 1" CLEARANCE TO COMBUSTIBLES FROM ALL VENT PIECES ON
THE SIDES AND BOTTOM AND 3" ABOVE HORIZONTAL RUNS).
A wall thimble must always be used when penetrating combustible wall materials.
NOTE:
Combustible wall thickness must be 4" to 8" maximum. From the exterior of the home, slide the horizontal vent
cap over the end of the horizontal pipe and tightly secure the vent cap to the wall with screws. Seal with high quality
caulking.
NOTE:
Venting terminal (Vent Cap) should not be recessed into wall or siding.
V min
H max
18 in.
6 in.
24 in.
6 ft.
30 in.
13 ft.
36 in.
19 ft.
42 in.
25-1/2 ft.
48 in.
32 ft.
4 ft. - 10 ft. 32 ft.
10 ft. - 40 ft. Varies
NOTE:
DO NOT SEPARATE TELESCOPING SECTIONS.
THEY MUST BE USED AS COMPLETE ASSEMBLIES.
