Instruction

10
Box. Turn Pipe Sections rmly clockwise to
lock them together. Sheet metal screws are
not required, but they may be used to reinforce
the connection, if desired. Use only 1/2” (or
shorter) sheet metal screws. Do not penetrate
the inner liner of the chimney.
8. Install Attic Insulation Shield: The
Attic Insulation Shield is required where
an unenclosed chimney passes into an
unoccupied space. Its purpose is to prevent
current and future combustibles (debris,
non-approved insulation, etc.) from getting too
close to the chimney (Fig.13). An installed
Attic Insulation Shield must be high enough
to cover current or future insulation. In
unoccupied areas where this shield cannot
t, you must enclose the chimney in a
framed enclosure. If the chimney is fully
enclosed through the unoccupied space, an
Attic Insulation Shield is not required. If the
installation requires the Attic Insulation Shield,
follow the below guidance:
• 8-A. For a 6” Dia DuraTech Chimney system,
if the unoccupied space is immediately
above the square or round support box (if
used), the support box may be used as an
Insulation shield, using the included collar to
completely cover the support box. If desired,
non-combustible insulation may be inserted
into the Support Box as described in step
3-A. Important: Ensure support box height is
appropriate to cover current/future insulation
height.
• 8-B1. On Multi-Story installations and
diameters other than 6”, if the Firestop
Radiation Shield extends above the
unoccupied oor, no modications are
necessary. The Firestop Radiation Shield will
t inside the stand alone Attic Insulation Shield.
B2. Assemble Chimney Sections until at
least 18 inches of chimney extends above the
Firestop Radiation Shield.
Box is in the 1st oor ceiling), you would
need a Firestop Radiation Shield at the 2nd
oor ceiling, and at the 3rd oor ceiling, etc.,
including where the chimney penetrates
into the attic. Fig.10 shows a typical 2-story
installation with an attic. Note: a Firestop
Radiation Shield is not installed where the
chimney penetrates through the roof. The
Firestop Radiation Shield is installed on the
underside of the ceiling/oor framing, with the
cylindrical “tube” portion of the shield pointing
upward. (Fig.11). Use a minimum of either
(1) 8 penny nail or (1) #8, 1-1/2” wood screws
per corner. Refer to Table 1 for framing
requirements.
7. Assemble Chimney Sections: Lower the
female end of the rst Chimney Section in
the Support Box (Fig.12). It will twist-lock
clockwise onto the male end of the Support
Figure 13
Figure 12
TWIST CLOCKWISE
TO TIGHTEN
ATTIC INSULATION
SHIELD
HEIGHT TO COVER
INSULATION
(CURRENT AND
FUTURE)