Instruction

4
DuraChimney is designed to stay cool on the
outside, to provide a hot draft on the inside,
and to provide for a re-safe design that
protects both the chimney and the building.
The double-wall air-cooled design allows the
chimney to expand under high temperatures.
Materials and Construction
.016” 430 stainless steel inner wall and .021”
galvanized steel outer wall. 2-inch clearance to
combustibles.
Listings
UL Listed to UL 103 and ULC S604 standards.
CLEARANCES
Always allow at least a 2-inch air-space
clearance between DuraChimney II Pipe
and any combustible materials. Never ll any
required clearance space with insulation or
any other materials. Combustible materials
include, but is not limited to, lumber, plywood,
sheetrock, plaster and lath, furniture, curtains,
electrical wiring, and building insulation.
PERMITS
Contact your local Building Ofcial or Fire
Ofcial regarding permits, restrictions, and
installation inspections in your area.
CHIMNEY APPLICATIONS
DuraChimney II is a complete chimney
system tested and listed to test procedures
UL 103 and ULC S604. In the United States,
DuraChimney II can be used with masonry
replaces or appliances fueled by oil, gas,
coal, or wood that have been tested and listed
for use with a UL 103 chimney system. In
Canada, DuraChimney II can be used with
listed oil & gas red appliances listed for use
with a Type A Chimney under ULC S604.
DuraChimney II may also be listed with
some factory-built replaces. Check with the
replace manufacturer if DuraChimney II can
be used on their replaces, and if there are
any limitations of use. Do not use with forced
draft or positive-pressure appliances. The
DuraChimney II system is designed to extend
vertically with a maximum of two (2) offsets
(four elbows total), each offset up to 30° from
vertical. DuraChimney II is listed under UL Re-
examination Service Number MH7399.
INSTALLATION NOTES
Proper planning for your DuraChimney
II installation will result in greater safety,
efciency, and convenience, as well as
saving time and money. You must use only
authorized DuraChimney II parts to maintain
a listed chimney system. Do not mix parts
or try to match with other products or use
improvised solutions. Do not install damaged
or modied parts. Practice good workmanship.
Sloppy work could jeopardize your chimney’s
safety. Keep electrical wiring and building
insulation away from all chimneys. When
deciding the location of your chimney, try to
avoid modications to roof beams and other
structural components of the building. Contact
either your dealer or DuraVent directly if you
have any questions.