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WARNING: The opening in collar around chimney
at top of fireplace must not be obstructed. Never use
blown insulation to fill chimney enclosure
12
/
" Galvanized
3
8
Outer Pipe
8" Stainless
Inner Pipe
Figure 8 - Lineal Gain
LINEAL GAIN
CAT. NO.
PART NO.
DESCRIPTION
42"
Fireplace
F0895
12-8DM
Pipe Section
F0881
12-8HT
F0896
18-8DM
Pipe Section
F0882
18-8HT
F0897
24-8DM
Pipe Section
F0883
24-8HT
F0898
36-8DM
Pipe Section
F0884
36-8HT
F0899
48-8DM
Pipe Section
F0885
48-8HT
F0916
RT-8DM
Round Termination
RTL-8DM
Round Termination
F0918
RLT-8DM
Round Termination
Round Termination with
F0917
RTT-8DM
Slip Section
Round Termination with
RTTL-8DM
Slip Section
Round Termination with
F0919
RLTT-8DM
Slip Section
F0920
ET-8DM
Square Chase-Top
Square Chase-Top with
F0922
ETO-8DM
Mesh
Square Chase-Top with
F0921
ETL-8DM
Slip Section
Square Chase-Top with
F0923
ETLO-8DM
Mesh & Slip Section
* The lineal gain for the terminations is measured to the flue gas
outlet height.
8
VENTING INSTALLATION Continued
ASSEMBLY AND INSTALLATION OF DOUBLE WALL CHIMNEY
SYSTEM
Each double wall chimney section consists of a galvanized outer
.
pipe, a stainless steel inner flue pipe and a wire spacer. Pipe sections
must be assembled independently as chimney is installed. When
connecting chimney directly to fireplace, inner flue pipe section
must be installed first with lanced side up. Outer pipe section can
then be installed over flue pipe section with hemmed end up. Press
down on each pipe section until lances securely engage hem on
fireplace starter. Wire will assure proper spacing between inner
Hemmed
and outer pipe sections.
End
Note: For Canada, use chimney parts designated HT.
fireplace must not be obstructed. Never use blown
insulation to fill chimney 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 together, it is important to
GAIN
assure joint between chimney sections is locked. Check by pulling
chimney upward after locking. Chimney will not come apart if properly
37
/
"
1
2
locked. It is not necessary to add screws to keep chimney together
10
/
"
5
(exception - see Figure 11, page 9).
8
The height of a vertical chimney pipe supported ONLY by the fireplace,
16
/
"
5
must not exceed 20 feet. Chimney heights above 20 feet must be
8
supported.
23
/
"
5
8
USING ELBOW OFFSETS (30E-8DM)
34
/
"
5
8
1. To achieve desired offset, you may install combinations of 12",
46
/
"
5
8
6
/
"*
7
8
7
/
"*
3
4
2. Chimney weight above offset rests on return elbow. Straps must
7
/
"*
1
2
6
/
" to
7
8
23
/
"*
1
8
3. Maximum length of pipe between supports (return elbow or 12S-
8
/
" to
1
2
21
/
"*
1
2
7
/
" to
1
4. All pipe connections between offset and return must be secured
2
21
/
"*
1
4
12"*
12"*
7" to 15"*
12" to
25
/
"*
1
2
SuperiorFireplaces.us.com
Opening in collar around chimney at top of
18", 24", 36" and 48" length of double wall pipe (see offset chart,
page 9, and Figure 9, page 8).
Note: For systems with 2 elbow sets, minimum height is 22 feet.
Maximum height for any system is 50 feet.
be securely nailed to rafters or joists (see Figure 10, details A and
B, page 8).
8DM) is 6' of angle run. Maximum of two 6' angle run sections
per chimney system (see Figure 9, page 9).
with two screws on outer pipe only (see Figure 11, page 10). Do
not penetrate inner stainless.
126631-01_G
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