Desa S36RH, S36H 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
	Air Inlet
	Eyebrow
Vented Crawl Space	Vent Hood
	Required for
(Check Local Codes
	Wall Installation
Before Installing in a
Vented Crawl Space)
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.

LINEAL GAIN

PART NO.	DESCRIPTION	GAIN
36"	Fireplace	40"
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
		25 1/2"*
	Section

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

12" Galvanized

Outer Pipe

12 3/8"	Hemmed
Stainless	End
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.

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