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3.3 Installing the Vent System
The DV36 has been approved with two vent systems. For vent systems in excess of 6 (six) feet in total length,
Simpson Duravent DV-GS components must be exclusively used. For vent systems of 6 feet or less, use of a
listed double walled flexible aluminium co-axial vent pipe is permitted, but
Duravent vent terminations.
In addition to the system requirements outlined below, when installing the chimney system follow the
installation and assembly instructions, which accompany the system components.
All horizontal runs must have a minimum of 2" (50mm) clearance from the topmost surface of the
Clearances:
pipe to the nearest combustible surface. All other vent system clearances must be a minimum of
1" (25mm).
Termination requirements:
Venting terminals shall not be recessed into a wall or siding.
Note:
Horizontal
Horizontal termination cap (either the standard 984 cap or the high wind 985 cap).
Horizontal terminations against vinyl sidings must use a vinyl siding stand-off.
Use a round support box/wall thimble when penetrating an inside wall, or on an outside wall only
when additional support or decorative trim is required. The round support box is not required on basic
instructions.
N
: In Canada local codes may require the use of a wall thimble on horizontal termination. Use part
OTE
#942.
Vertical
Firestop (when penetrating a ceiling)
Flashing
Collar
Vertical termination cap (980)
S
EALANT
Sealant is required on the chimney system. Sealant will ensure that the inlet air for combustion enters from
outdoors and not through joints in the system, and that flue gases properly exit the system and are not re-
circulated. On the 4" inner flue pipe joints Mil-Pac Black sealant (or equivalent) is required (available from
local suppliers or Osburn dealer). The sealant should be applied to the male component's joints. A bead of
high temperature silicone should be used on the outside of the 6-5/8 joints after assembly is complete.
No other venting systems or components may be used.
in conjunction with Simpson
only
/9
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