Desa (V)JM36, (V)JM50 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 (IN)
Georgian	Fireplace	66 1/2"
12-12DM	Pipe Section	10 5/8"
12-12HT
18-12DM	Pipe Section	16 5/8"
18-12HT
24-12DM	Pipe Section	23 5/8"
24-12HT
36-12DM	Pipe Section	34 5/8"
36-12HT
48-12DM	Pipe Section	46 5/8"
48-12HT
RLT-12D	Round Termination	7 3/4"*
RLT-12HT
STL-12D	Square Chase-Top	7" to 15"*
	with Slip Section

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

12" Galvanized
Outer Pipe
12	3	/8"	Hemmed
			End
Stainless
Inner Pipe

Vented Crawl Space

(Check Local Codes

Before Installing in a

Vented Crawl Space)

Air Inlet Eyebrow

Vent Hood Required for Wall Installation

Figure 6 - Lineal Gain

ASSEMBLY AND INSTALLATION OF

DOUBLE WALL CHIMNEY SYSTEM

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 mea- surable 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.

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 5 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.

Continue to assemble chimney sections as outlined

above, making sure that both the inner and outer

pipe sections are locked together. When install-

ing 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 if properly locked. It is not necessary to add

screws to keep the chimney together (exception

- see Figure 9, page 10).

8 www.desatech.com 117541-01A