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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 10, page 9).
USING ELBOW OFFSETS (30E-8DM)
1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
on page 9 and Figure 8).
Note: For systems with 2 elbow sets, mini-
mum height is 22 feet. Maximum height
for any system is 50 feet.
Offset
Elbow
6' Max.
6' Max.
Return
Elbow
127023-01A
VENTING INSTALLATION
Return
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
Offset
Elbow
A
Figure 8 - Typical Offset Installation
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Continued
2. Chimney weight above offset rests on
return elbow. Straps must be securely
nailed to rafters or joists (see Figure 9,
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 8).
4. All pipe connections between offset and
return must be secured with two screws
on outer pipe only (see Figure 10, page
9). Do not penetrate inner stainless.
6' Max.
6' Max.
B
Return
Elbow
Return
Elbow
Ceiling
Support Pipe
12S-8DM
Offset
Elbow
C
6' Max.
6' Max.
9
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