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122273-01A8
Figure 9 - Lineal Gain
PART NO. GAIN
Georgian 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
12" Galvanized
Outer Pipe
Each double wall chimney section consists
of a galvanized outer pipe, a stainless steel
inner ue pipe and a wire spacer. The pipe
sections must be assembled independently
as the chimney is installed. When connecting
chimney directly to the replace, the inner ue
pipe section must be installed rst with the
lanced side up. The outer pipe section can
then be installed over 5 the ue pipe section
with the hemmed end up. Press down on each
pipe section until the lances securely engage
the hem on the replace starter. The wire will
assure the proper spacing between the inner
and outer pipe sections.
Continue to assemble chimney sections as
outlined above, making sure that both the
inner and outer pipe sections are locked to-
gether. When installing double wall snap-lock
chimney together, it is important to assure
the joint between the chimney sections is
locked. Check by pulling chimney upward
after locking. The chimney will not come apart
Figure 8 - 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)
The 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 consider-
ation (lineal gain) and are given in the lineal
gain chart (see Figure 9). Lineal Gain is the
actual measurable length of a part after two or
more parts are connected. For Canada, use
chimney parts designated "HT".
collar around the chimney at the
obstructed. Never use blown insula-
VENTING INSTALLATION
The installation of an outside air kit should
be performed during the rough framing of
the replace due to the nature of it's location.
Outside combustion air is accessed through
a vented crawl space (AK4F) or through a
sidewall (AK4).
inlet ducts shall not terminate
in attic space.