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107777-01E8
VENTING INSTALLATION
Continued
Figure 9 - Typical Offset Installation
Return
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
A
B C
Offset
Elbow
Ceiling
Support Pipe
12S-8DM
Return
Elbow
Each double wall chimney section consists of
a galvanized outer pipe, a stainless steel in-
ner ue pipe and a wire spacer. Pipe sections
must be assembled independently as chimney
is installed. When connecting chimney directly
to replace, inner ue pipe section must be
installed rst with lanced side up. Outer pipe
section can then be installed over ue pipe
section with hemmed end up. Press down
on each pipe section until lances securely
engage hem on replace starter. The wire
will assure proper spacing between inner and
outer pipe sections.
Note: For Canada, use chimney parts desig-
nated HT.
Opening in collar around
not be obstructed. Never use
enclosure.
Continue to assemble chimney sections as
outlined, making sure that both inner and
outer pipe sections are locked together. When
installing double wall snap-lock chimney to-
gether, it is important to assure joint between
chimney sections is locked. Check by pulling
chimney upward after locking. Chimney will
not come apart if properly locked. It is not
necessary to add screws to keep chimney to-
gether (exception - see Figure 11, page 9).
1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
and Figure 9).
Note: For systems with 2 elbow sets, mini-
mum height is 22 feet. Maximum height
for any system is 50 feet.
2. Chimney weight above offset rests on
return elbow. Straps must be securely
nailed to rafters or joists (see Figure 10,
details A and B on page 9).
3. Maximum length of pipe between supports
(return elbow or 12S-8DM) is 6' of angle
run. Maximum of two 6' angle run sections
per chimney system (see Figure 9).
4. All pipe connections between offset and
return must be secured with two screws
on outer pipe only (see Figure 11, page
9). Do not penetrate inner stainless.