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122272-01C6
Figure 6 - Lineal Gain
LINEAL GAIN
PART NO. DESCRIPTION GAIN (IN)
48" Plantation Fireplace 66
1
/
2
"
12-12DM
12-12HT
Pipe Section 10
5
/
8
"
18-12DM
18-12HT
Pipe Section 16
5
/
8
"
24-12DM
24-12HT
Pipe Section 23
5
/
8
"
36-12DM
36-12HT
Pipe Section 34
5
/
8
"
48-12DM
48-12HT
Pipe Section 46
5
/
8
"
RLT-12D
RLT-12HT
Round
Termination
7
3
/
4
"
*
STL-12D
Square Chase-
Top with Slip
Section
7
"
to 15
"
*
* The lineal gain for the terminations is mea-
sured to the ue gas outlet height.
Hemmed
End
12
3
/
8
"
Stainless
Inner Pipe
15" Galvanized
Outer Pipe
ASSEMBLY AND INSTALLATION OF
DOUBLE WALL CHIMNEY SYSTEM
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. Wire will
assure proper spacing between inner and
outer pipe sections.
Continue to assemble chimney sections as
outlined above, making sure 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
together (exception, see Figure 9, page 8).
Figure 5 - Outside Air Kit
Secure to Collars with Metal Tape, Screws
or Straps (Min. of 1/4" x 20" in size)
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)
CAUTION: Combustion air
inlet ducts shall not terminate
in attic space.
termination.
CHIMNEY PIPE
DESA Heating, LLC chimney system consists
of 12", 18", 24", 36"' and 48" snap-lock, double-
wall pipe segments, planned for maximum
adaptability to individual site requirements.
Actual lengths gained after tting overlaps must
be taken into consideration (lineal gain) and are
given in lineal gain chart (see Figure 6). Lineal
gain is the actual measurable length of a part
after two or more parts are connected. For
Canada, use chimney parts designated "HT".
WARNING: The opening in the
collar around the chimney at the
obstructed. Never use blown insula-
INSTALLATION
Continued