Mendota DXV-45 DT3-LX Operating Instructions Manual page 18

A-1 MINIMUM RISE THROUGH-THE-WALL VENTING FOR NG AND LPG
HEAT SHIELD
AA-11-00458
WARNING: ALWAYS USE HEAT SHIELD (#AA-11-00458) WHEN EXTERIOR WALL COVERING IS MADE OF VINYL,
WOOD OR OTHER COMBUSTIBLE MATERIALS. HEAT SHIELD (#AA-11-00458) IS INCLUDED WITH THE DXV45
FIREPLACE.
IMPORTANT: REFER TO DRAWINGS ON PAGE 12-14 WHILE FOLLOWING THESE INSTRUCTIONS.
The horizontal distance from flue outlet center to outside wall must not exceed 24" if a 90
flue outlet. ALWAYS MAINTAIN 1" CLEARANCES FROM VENT PIPE TO COMBUSTIBLES, 2" ABOVE PIPE ON
HORIZONTAL RUNS. Use "fixed" pipe sections in place of adjustable pipe sections wherever possible. If adjustable
pipe sections must be used, 1000
ly). Do not fill air spaces within the required clearance distances (1" around vertical pipe sections and 2" above horizontal
pipes and fittings) with insulation or other material.
Position fireplace in desired location. See pg.12 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 ad-
just the fireplace location.
Measure from the top of the fireplace up minimum 7 1/2" to centerline of 90
center of where the vent pipe will penetrate the wall.
Cut and frame a 10-3/4" x 10-3/4" 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., an 8 ½" diameter hole is acceptable. A Wall Thimble (#45-01-00229)
must be used when penetrating a combustible wall.
Make sure that all component connections are in their fully twist-locked position and are leak-proof. Make sure that
º Millpak
1000 sealant (#65-06-00909) is used on the inner pipe joints of all pipe sections (Dura Vent only).
*NOTE: DO NOT SEPARATE TELESCOPING SECTIONS. USE AS COMPLETE ASSEMBLIES.
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).
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: The Horizontal Vent Cap should not be recessed into the wall or siding.
17
Y
º Millpak sealant (#65-06-00909) must be used on the inner pipe joints (DuraVent On-
HEAT SHIELD #AA-11-00458
o
elbow is connected directly to
º elbow. (pg. 8) and mark wall directly at the