VENTING INSTALLATION

OPTIONAL OUTSIDE AIR KIT (MODEL AK4/AK4F)

The installation of an outside air kit should be performed during the rough framing of the fireplace due to the nature of it's location. Outside combustion 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 FMI PRODUCTS, LLC 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. Never use blown insulation to fill the chimney enclosure.

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

25 1/2"*

 

Section

 

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

12 3/8" Galvanized

 

Outer Pipe

Hemmed

 

8" 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. Pipe sections must be assembled independently as the chimney is installed. When connecting chimney directly to fireplace, the inner flue pipe section must be installed first with lanced side up. The outer pipe section can then be installed over the flue pipe section with hemmed end up. Press down on each pipe section until lances securely engage hem on fireplace starter. The wire will assure the proper spacing between inner and outer pipe sections.

6

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111099-01L