Mendota DXV-60 Installation & Operating Instructions Manual page 17

A-2 ELEVATED RISE THROUGH-THE-WALL VENTING
The minimum vertical rise from top of fireplace, is 60 in. when used with a maximum horizontal run of 12 ft.
For other venting configurations within these maximum limits see figure 6 PAGE 11.
NOTE: The horizontal run of vent pipe must 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.
USING OFFSETS AND RETURNS: A single 90
allowable maximum 12' horizontal run. Each additional 90
by 3'. A maximum of two 90° or four 45° elbows can be used. 45º elbows reduce the maximum horizontal dis-
tance by 1½ '.
SUPPORT: Horizontal runs of pipe will require one vent support for every 3 ft. of pipe.
CAUTION: Be sure to maintain 1" air space clearances to any combustibles (2" above horizontal runs).
IMPORTANT: REFER TO DRAWINGS ON PAGE 11 WHILE FOLLOWING THESE INSTRUCTIONS.
The DXV-60 Fireplace must be installed by a qualified Mendota service person.
1. Position fireplace in desired location. See PAGE 8 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.
2. Locate position where vent pipe will pass through any ceilings and will penetrate the outside wall. Since
vent pipe sections "overlap" 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. (See FIGURE 3: Exte-
rior Vent Locations, PAGE 8). Be sure all vent components are properly twist locked and leak-proof. Be
sure 2000 sealant is used in the inner joints of all adjustable pipe sections (Dura Vent only).
º
*NOTE: DO NOT SEPARATE TELESCOPING SECTIONS USE AS COMPLETE ASSEMBLIES.
3. Cut and frame an opening in the outside wall and in any ceiling openings properly sized for the wall thimble
or ceiling firestop spacer you will be using (See component manufacturer's instructions). The outside wall
hole must be positioned so the vent system will have a ¼ " per foot 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. A ceiling firestop spacer is required at any floor (ceiling)
opening.
4. Connect a 45° elbow to the fireplace adapter on top of fireplace vent outlet.
5. The horizontal pipe must end flush with the exterior wall of the home. Horizontal pipe will require a proper
support (part # 45-01-00234) every 3 ft. of vent pipe. THERE MUST BE A MINIMUM OF 1"
CLEARANCE TO COMBUSTIBLES FROM ALL VENT PIECES (2" above horizontal runs).
6. 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 should not be recessed into the wall or siding. If the Horizontal Vent Cap is in-
stalled on a wall covered with Vinyl, Wood or a Combustible siding material, always install the Mendota
Heat Shield #AA-11-00458.
vertical-to-horizontal elbow is already calculated into th
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elbow reduces the maximum horizontal distance
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