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For more information, visit www.desatech.com
For more information, visit www.desatech.co
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FINISHING YOUR CHIMNEY SYSTEM
10 Foot Rule
All chimney terminations must extend a minimum of 3 feet above
the
highest point where it passes through the roof, and must be at
least
2 feet above the roof within a 10 foot horizontal span (see
Figure
23).
IMPORTANT:
If an exposed portion of chimney is greater than 4 feet
above
the roof line, use support wires to keep chimney secure. The
support
wires may be attached to the outer pipe of the chimney with
screws, provided the screws do not penetrate the inner flue pipe
.
Figure 23 - 10 Foot Rule
Figure 22 - Typical Offset Installations
Minimum Chimney Height
The minimum chimney height (measured from bottom of fireplace to
flue
gas outlet-end of pipe) is 16 feet for a straight run, 16 feet minimum
for
a run with 1 elbow set, and 25 feet minimum for a run with 2 elbow
sets. (A set consists of one starter elbow and one return elbow.
)
Uncommon
circumstances such as neighboring hills, tall trees, or
strong
wind areas can cause down drafts in the chimney system. In
such
cases going beyond the minimum recommended height would
be preferable to provide a better draw.
Maximum Chimney Height
The fireplace height approved for any chimney run with this
fireplace
system is 40 feet measured from bottom of fireplace to flue
outlet-end of pipe. See Figure 24, page 11
Maximum
length of pipe between supports is 6 feet of angled run.
A maximum of two 6 foot angled run sections per chimney system
(See Figure 22).
VENTING INSTALLTION
Continued
OFFSET
ELBOW
OFFSET
ELBOW
RETURN
ELBOW
OFFSET
ELBOW
RETURN
ELBOW
RETURN
ELBOW
RETURN
ELBOW
CEILING
SUPPO
RT
PIPE
V12S-8DM
6’ MAX
(15.2cm)
6’ MAX
(15.2cm)
6’ MAX
(15.2cm)
6’ MAX
(15.2cm)
6’ MAX
(15.2cm)
6’ MAX
(15.2cm)
SUPPORT SECTIONS
FINISHING YOUR CHIMNEY SYSTEM
10 Foot Rule
Minimum
Chimney Height
Maximum Chimney Height