Filter
Top Products
www.desatech.com
107777-01E 7
Figure 8 - Lineal Gain
Figure 7 - 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)
Installation of an outside air kit should be
performed during rough framing of replace
due to the nature of it's location. Outside com-
bustion air is accessed through a vented crawl
space (AK4F) or through a sidewall (AK4).
See Figure 24 on page 15 for instruction of
operating air kit.
inlet ducts shall not terminate
in attic space.
termination.
VENTING INSTALLATION
DESA Heating, LLC chimney system consists
of 12", 18", 24", 36" and 48" snap-lock, dou-
ble-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 8). Lineal gain is actual measurable
length of a part after two or more parts are
connected. For Canada, use chimney parts
designated "HT".
collar around chimney at top of
chimney enclosure.
Hemmed
End
8" Stainless
Inner Pipe
12
3
/
8
"
Galvanized
Outer Pipe
LINEAL GAIN
PART NO. DESCRIPTION GAIN
36" Fireplace 37
1
/
2
"
12-8DM
12-8HT
Pipe Section 10
5
/
8
"
18-8DM
18-8HT
Pipe Section 16
5
/
8
"
24-8DM
24-8HT
Pipe Section 23
5
/
8
"
36-8DM
36-8HT
Pipe Section 34
5
/
8
"
48-8DM
48-8HT
Pipe Section 46
5
/
8
"
RT-8DM Round Termination 6
7
/
8
"*
RTL-8DM Round Termination 7
3
/
4
"*
RTT-8DM
Round Termination
with Slip Section
6
7
/
8
" to
23
1
/
8
"*
RTTL-8DM
Round Termination
with Slip Section
8
1
/
2
" to
21
1
/
2
"*
ET-8DM Square Chase-Top 12"*
ETO-8DM
Square Chase-Top
with Mesh
12"*
ETL-8DM
Square Chase-Top
with Slip Section
7" to 15"*
ETLO-8DM
Square Chase-Top
with Mesh & Slip
Section
12" to
25
1
/
2
"*
* The lineal gain for the terminations is
measured to the ue gas outlet height.