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10
SUPPORT SECTIONS
FINISHING YOUR CHIMNEY SYSTEM
10 Foot Rule
Minimum Chimney Height
Maximum Chimney Height
VENTING INSTALLTION
Continued
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).
RETURN
ELBOW
6' MAX
CEILING
(15.2cm)
SUPPORT
OFFSET
V12S-8DM
ELBOW
RETURN
ELBOW
6' MAX
(15.2cm)
OFFSET
ELBOW
Figure 22 - Typical Offset Installations
RETURN
ELBOW
6' MAX
(15.2cm)
PIPE
6' MAX
(15.2cm)
6' MAX
6' MAX
(15.2cm)
(15.2cm)
For more information, visit www.desatech.com
For more information, visit www.desatech.com
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.
OFFSET
ELBOW
RETURN
ELBOW
Figure 23 - 10 Foot Rule
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
115607-01A
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