Venting installation – FMI (V)JM42 User Manual

Page 8

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122273-01D

8

Figure 9 - Lineal Gain

LINEAL GAIN

PART NO.

DESCRIPTION

GAIN

Georgian

Fireplace

66

1

/

2

"

12-12DM

12-12HT

Pipe Section

10

5

/

8

"

18-12DM

18-12HT

Pipe Section

16

5

/

8

"

24-12DM

24-12HT

Pipe Section

23

5

/

8

"

36-12DM

36-12HT

Pipe Section

34

5

/

8

"

48-12DM

48-12HT

Pipe Section

46

5

/

8

"

RLT-12D

RLT-12HT Round Termination

7

3

/

4

"*

STL-12D Square Chase-Top

with Slip Section 7" to 15"*

* The lineal gain for the terminations is mea-

sured to the flue gas outlet height.

Hemmed

End

12

3

/

8

"

Stainless

Inner Pipe

15" Galvanized

Outer Pipe

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 assembled 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 fireplace

starter. The wire will assure the proper spacing

between the inner and outer pipe sections.

Figure 8 - Outside Air Kit

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

Vent Hood

Required for

Wall Installation

Air Inlet

Eyebrow

Vented Crawl Space

(Check Local Codes

Before Installing in a

Vented Crawl Space)

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 consider-

ation (lineal gain) and are given in the lineal

gain chart (see Figure 9). Lineal Gain is the

actual measurable length of a part after two or

more parts are connected. For Canada, use

chimney parts designated "HT".

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.

The maximum height for the

air vent can not exceed 3 feet

below the flue gas outlet of the

termination.

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.

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