Desa S42RH, S42H Venting Installation, OPTIONAL OUTSIDE AIR KIT MODEL AK4/AK4F, Chimney Pipe

VENTING INSTALLATION

OPTIONAL OUTSIDE AIR KIT (MODEL AK4/AK4F)

The installation of an outside air kit should be per- formed during the rough framing of the 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).

CAUTION: Combustion air inlet ducts shall not terminate in attic space.

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

LINEAL GAIN

PART NO.	DESCRIPTION	GAIN
42"	Fireplace	44"
12-8DM	Pipe Section	10 5/8"
12-8HT
18-8DM	Pipe Section	16 5/8"
18-8HT
24-8DM	Pipe Section	23 5/8"
24-8HT
36-8DM	Pipe Section	34 5/8"
36-8HT
48-8DM	Pipe Section	46 5/8"
48-8HT
RT-8DM	Round Termination	6 7/8"*
RTL-8DM	Round Termination	7 3/4"*
RTT-8DM	Round Termination	6 7/8" to
	with Slip Section	23 1/8"*
RTTL-8DM	Round Termination	8 1/2" to
	with Slip Section	21 1/2"*
ET-8DM	Square Chase-Top	12"*
ETO-8DM	Square Chase-Top	12"*
	with Mesh
ETL-8DM	Square Chase-Top	7" to 15"*
	with Slip Section
	Square Chase-Top	12" to
ETLO-8DM	with Mesh & Slip

Vented Crawl Space

(Check Local Codes

Before Installing in a

Vented Crawl Space)

Air Inlet Eyebrow

Vent Hood Required for Wall Installation

Section 25 1/2"*

*The lineal gain for the terminations is mea- sured to the flue gas outlet height.

12" Galvanized

Outer Pipe

Figure 5 - Outside Air Kit

CHIMNEY PIPE

The DESA 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 fitting overlaps must be taken into consideration (lineal gain) and are given in the 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 top of the fireplace must not be obstructed.Neveruseblowninsula- tion to fill the chimney enclosure.

12	3	/8"	Hemmed
			End
Stainless
Inner Pipe
		Figure 6 - Lineal Gain
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. The pipe sections must be as-
sembled independently as the chimney is installed.
When connecting chimney directly to the fireplace,
the inner flue pipe section must be installed first
with the lanced side up. The outer pipe section can
then be installed over the flue pipe section with the
hemmed end up. Press down on each pipe section
until the lances securely engage the hem on the fire-
place starter. The wire will assure the proper spacing
between the inner and outer pipe sections.

6 www.desatech.com 111099-01C