Venting Installation - Desa B36L-M Owners Manual And Installation Manual

OPTIONAL OUTSIDE AIR KIT
(MODEL AK4/AK4F)
Installation of outside air kit should be per-
formed during rough framing of fireplace due
to the nature of it's location. Outside combus-
tion 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.
CAUTION: Combustion air
inlet ducts shall not terminate
in attic space.
The maximum height for the
air vent can not exceed 3 feet
below the flue gas outlet of the
termination.
Secure to Collars with Metal Tape, Screws
or Straps (Min. of 1/4" x 20" in size)
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)
Figure 7 - Outside Air Kit
CHIMNEY PIPE
DESA Heating, LLC chimney system con-
sists of 12", 18", 24", 36" and 48" snap-lock,
double-wall pipe segments, planned for
maximum adaptability to individual site re-
quirements. Actual lengths gained after fitting
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.
115385-01B

VenTing inSTallaTion

Air Inlet
Location
Must Allow
For Bushes
or Snow
Air Inlet
Eyebrow
Vent Hood
Required for
Wall Installation
www.desatech.com
WARNING: The opening in
collar around chimney at top of
fireplace must not be obstructed.
Never use blown insulation to fill
chimney enclosure.
1 / "
3
8
Galvanized
Outer Pipe
8" Stainless
Inner Pipe
LINEAL GAIN
PART NO. DESCRIPTION
36"
12-8DM
Pipe Section
1-8HT
18-8DM
Pipe Section
18-8HT
24-8DM
Pipe Section
4-8HT
36-8DM
Pipe Section
36-8HT
48-8DM
Pipe Section
48-8HT
RT-8DM
Round Termination
RT-8HT
RTL-8DM
Round Termination
RTL-8HT
RTT-8DM Round Termination
RTT-8HT with Slip Section
RTTL-8DM Round Termination
RTTL-8HT with Slip Section
ET-8DM
Square Chase-Top
ET-8HT
Square Chase-Top
ETO-8DM
with Mesh
ETL-8DM Square Chase-Top
ETL-8HT with Slip Section
Square Chase-Top
ETLO-8DM with Mesh & Slip
* The lineal gain for the terminations is mea-
sured to the flue gas outlet height.
Figure 8 - Lineal Gain
Hemmed
End
GAIN
Fireplace 37
10
16
3
34
46
6
7
6
3
8
1
7" to 15"*
12" to
5
Section
/ "
1

/ "
5
8
/ "
5
8
/ "
5
8
/ "
5
8
/ "
5
8
/ "*
7
8
/ "*
3
4
/ " to
7
8
/ "*
1
8
/ " to
1

/ "*
1

12"*
12"*
/ "*
1

7