COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE
THATDURATECH BE INSTALLED ONLY IN ACCORDANCE WITH
THESE INSTRUCTIONS.
IMPORTANT:
Read through all of these instructions
before beginning your installation. Failure
to install this product as described in these
instructions will void the manufacturer’s
warranty, may create a re or other safety
hazard, and may affect your homeowner’s
insurance and safety listing of your
appliance.
Keep these instructions for future
reference.
Dear Customer, Installer, or End User:
We welcome any comments regarding matters
pertaining to our DuraVent products.
We welcome any ideas, input or complaints
and I’ll make sure that someone responds
directly back to you.
Send your emails to:
president@duravent.com
If you are searching for tech support or product
information, please phone us at 800-835-4429.
Or email us at:
techsupport@duravent.com
LISTED
MH7399
ALL FU EL CHI MNEY S YSTEM F OR 10" 24" DI AMETE R
For the most up-to-date installation instructions, see www.duravent.com
Always allow at least a 2-inch clearance
between DuraTech Chimney Pipe and any
combustible materials. Never ll any required
clearance space with insulation or any other
materials. Combustible materials include
lumber, plywood, sheetrock, plaster and lath,
furniture, curtains, electrical wiring and building
insulation. Keep single wall stovepipe at least
18 inches away from combustible materials,
unless a clearance reduction system that is
acceptable to the authority having jurisdiction
is used, or the appliance to be installed is
listed and the instructions specify a different
clearance.
PERMITS
Contact your local Building Ofcial or Fire
Ofcial regarding permits, restrictions, and
installation inspections in your area.
DURATECH CHIMNEY
APPLICATIONS
DuraTech Chimney 1700°F (10”-24” diameter)
is a complete chimney system tested and
listed to UL Test Procedure 103, and ULC
S604. In the United States, DuraTech
Chimney can be used with wood replaces,
furnaces, boilers, water heaters, ranges, or
other residential-type appliances fueled by oil,
gas, coal, or wood, that have been tested and
listed for use with a UL103 chimney system.
In Canada, DuraTech can be used with oil &
gas red appliances listed for use with a Type
A Chimney, in accordance with ULC S604.
DuraTech Chimney 1700°F is available in
10” through 24” diameters. Do not use with
forced draft, positive-pressure appliances.
The DuraTech Chimney system is designed
to extend vertically with a maximum of one
(1) offset (two elbows total) of up to 30° from
4
vertical. DuraTech Chimney is listed under UL
Re-examination Service Number MH7399.
EQUIPMENT & MATERIALS
Drill / Driver
Hammer
Caulking Gun
Plumb Bob
Screwdrivers (Phillips & Standard)
Tin Snips
Saber or Keyhole Saw
Level
Dependable Ladder
Tape Measure
Proper Gloves and Shoes
Eye Protection
Materials You May Need:
Non-hardening Waterproof Sealant
8 Penny Nails
#8, 2-1/2” & 1-1/2” Wood Screws
Roong Nails
600OF RTV Silicone Sealant
INSTALLATION NOTES
Proper planning for your DuraTech Chimney
installation will result in greater safety,
efciency, and convenience, as well as
saving time and money. You must use
only authorized DuraTech Chimney parts
to maintain a listed Chimney system (not
including the connector pipe). Do not mix parts
or try to match with other products, or use
improvised solutions. Do not install damaged
or modied parts. Each solid-fuel appliance
must be vented with its own chimney. Table
1 lists the authorized DuraTech Chimney
components. Practice good workmanship.
Sloppy work could jeopardize your chimney’s
safety. Keep electrical wiring and insulation
away from all chimneys and stovepipes. If you
have any questions, be sure to contact either
your dealer or DuraVent directly.
CHIMNEY DIAMETER
Follow the appliance manufacturer’s
instructions to determine chimney diameter
and clearances between combustible materials
and your heating appliance. Never choose a
chimney with an inside diameter smaller than
your appliance’s outlet. If you are connecting
to a masonry replace, refer to Table 4, for
proper sizing. To calculate the chimney’s
outside diameter, add 2 inches to the inside
diameter.
CHIMNEY HEIGHT
The National Fire Protection Association
Standard #211 states: “Chimneys shall
extend at least three feet above the highest
point where it passes through the roof of a
building, and at least two feet higher than
any portion of a building within ten feet.” (Fig
1) 10”-16" diameter DuraTech Chimney may
be installed up to 40 feet high when using a
Support Box, and up to 30 feet high when
using a Tee Support. DuraTech in 18”-24”
diameters is intended to be mounted directly
to an appliance or masonry replace, and is
limited in height by the allowable weight of the
supporting surface, up to a maximum of 60-ft.
If the chimney extends more than 4 feet above
the roof, an Extended Roof Bracket must be
used. Due to the overlap of the joints, subtract
3/4” from each Chimney Section’s height to
calculate installed height.
Table 1
DuraTech Cimney Components
12”, 18”, 24” & 36” S ECTIONS R OUND CEIL ING SUPPO RT BOX
FIRES TOP RADIATION SHIELDEXTE NDED ROOF BRACKET
ELBOW AT TIC
INSUL AT ION SHIEL DADJUS TA BLE ROOF F LASHING
TEE WIT H T EE CAP WALL THIMB LE
ELBOW STRAPCHASE TOP FLASHING
TEE SU PPORT FINIS HING COLL AR
BRACK ET WA LL STRAPFLAT ROOF FLASHIN G
CHIMN EY CAP ROOF RA DIATION SHIE LDS
ANCHO R PLATESTORM CO LLAR
3 FT.
MIN.
ABOVE
ROOF
TRIM CO LLARS FO R ROUND
SUPPO RT BOXES
2 FT. MIN. ABOVE
HIGHEST POINT OF
ROOF WITHIN 10 FT.
10'
Figure 1
CHIMNEY PLACEMENT
When deciding the location of your chimney,
try to avoid modications to roof beams and
other structural components of the building.
CHIMNEY ENCLOSURE
REQUIREMENTS
Through Rooms: Interior chimneys shall
be enclosed where they extend through
closets, storage areas, occupied spaces, or
anyplace where the surface of the chimney
could be contacted by persons or combustible
materials. The space between the outer wall
of the chimney and the enclosure shall be at
5
condensation and creosote formation, and
enhance draft. Include an access door by the
Tee Cap for chimney cleaning (Refer to Fig
18).
ATTIC
ATTIC
SPACE
OCCUPIED
SECOND
FLOOR
FIRST
FLOOR
INSULATION
SHIELD
FIRESTOP
RADIATION
SHIELD
(INSIDE)
ENCLOSURE MUST HAVE 2
INCHES OF CLEARANCE
BETWEEN CHIMNEY AND WALL
SUPPORT BOX
Figure 2
least 2 inches (Fig 2).
Multi-Story: Consult local building code
ofcials for requirements in your area. The
National Fire Protection Association Standard
#211 states: “Factory-built chimneys that
pass through oors of buildings requiring
the protection of vertical openings shall be
enclosed with approved walls having a re
resistance rating of not less than one hour
when such chimneys are located in a building
less than 4 stories in height, and not less than
2 hours when such chimneys are located in
a building more than 4 stories in height.” In
Canada, except in single-family and two-family
dwellings, chimneys which extend through
another storey must have an enclosure with a
re resistance rating equal to or greater than
that of the oor or roof assembly through which
they pass.
Cold Climates: In cold climates, chimneys
mounted on an outside wall should be
enclosed in a chase. Exterior chases reduce
6
APPLIANCE RECOMMENDATIONS
Follow the appliance manufacturer’s
instructions. The requirements stated
below pertain to all appliances installed with
DuraTech Chimney systems.
Choice: Choose an appliance that is listed by
a recognized testing laboratory, is appropriate
for your needs, and is not larger than required.
Installation: Once the chimney system is in
place, install the appliance and stovepipe
(if applicable) as described in the appliance
manufacturer’s instructions. Be sure to
maintain all required clearances.
Flues: Connect only one solid fuel appliance
per chimney.
Operation: Follow the appliance
manufacturer’s instructions and safety manual
for maximum efciency and safety. Overring
can damage the appliance, stovepipe and
chimney, and can void your warrenties.
Fuels: Do not burn driftwood, plastic, or
chemically treated wood such as railroad
ties. They are corrosive to your appliance
and chimney system. Follow the appliance
manufacturer’s instructions and safety manual
in regards to fuels. Not all appliances are
equipped to burn coal. Coal with a low sulfur
content will reduce the possibility of corrosion.
STEP-BY-STEP DIRECTIONS
There are three general types of DuraTech
Chimney installations:
1. Ceiling-supported.
2. Tee-supported (through-the-wall)
3. Masonry Fireplace
Review the step-by-step directions before
beginning your installation.
CEILING SUPPORT
Ceiling supported systems are available for
diameters 10”-16".
1. Place Appliance: Position the appliance
according to the manufacturer’s instructions.
The ue outlet collar should be placed
between the rafters or joists above, if possible.
2. Frame Support Opening: Drop a plumb
bob to the center of the appliance’s ue outlet
and mark this center point on the ceiling. Refer
to Table 2 for specic framing and clearance
dimensions. Mark appropriate cutting lines
around the center point. Cut a square hole in
the ceiling for the Support Box. Frame a level,
square opening centered over the hole which
you have cut. (Figures 3 and 4).
CHIMNEY CAP
STORM COLLAR
Figure 4
3-INCH MINIMUM
REQUIRED BELOW
FINISHED CEILING
ADJUSTABLE
FLASHING
CHIMNEY
SECTIONS
JOISTS &
FRAMING
CONNECTOR PIPE
GOING TO
APPLIANCE.
ALWAYS MAINTAIN A
MINIMUM OF 18 INCHES
CLEARANCE TO
COMBUSTIBLES FOR
SINGLE-WALL STOVEPIPE
MINIMUM OF 3
INCHES BELOW
FINISHED CEILING
ROUND
SUPPORT BOX
Figure 3
ATTIC
INSULATION
SHIELD
FRAMED
OPENING
ROUND TRIM
COLLAR
7
ROUND SUPPORT
BOX WITH SQUARE
TRIM COLLAR
3. Install Support: For installation into a at
ceiling, you need to use the Round Support
Box. The Round Ceiling Support Box has
the option of a square or round Trim Collar
available (Fig 5). The Support Box must
extend at least 3 inches below the nished
ceiling. (do not install beyond 4-1/2” below
nished ceiling or the trim collar will not cover
Figure 5
2 INCH MINIMUM
CLEARANCE TO
INSIDE OF ENCLOSURE
FRAMED
ENCLOSURE
MINIMUM OF 3 INCHES
BELOW FINSHED CEILING
CAP
STORM
COLLAR
CHIMNEY
SECTIONS
ATTIC
INSULATION
SHIELD
ADJUSTABLE
FLASHING
FIRESTOP
RADIATION
SHIELD
CHIMNEY
SECTION
CONNECTOR PIPE
TO APPLIANCE.
MAINTAIN AT
LEAST 18 INCH
FOR SINGLE WALL
STOVEPIPE
ROUND
SUPPORT BOX
FRAMED
OPENING
SQUARE
TRIM
Figure 6
8
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