www.fmiproducts.com
56149J
6
ASSEMBLY AND INSTALLATION OF
DOUBLE WALL CHIMNEY SYSTEM
Each double wall chimney section consists of
a galvanized outer pipe, a stainless steel in
-
ner flue pipe and a wire spacer. Pipe sections
must be assembled independently as chimney
is installed. When connecting chimney directly
to fireplace, inner flue pipe section must be in
-
stalled first with lanced side up. Outer pipe sec
-
tion can then be installed over flue pipe section
with hemmed end up. Press down on each pipe
section until lances securely engage hem on
fireplace starter. Wire will assure proper spacing
between inner and outer pipe sections.
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
368STM(-1)
Fireplace
54
"
12-8DM
Pipe Section
10
5
/
8
"
18-8DM
Pipe Section
16
5
/
8
"
24-8DM
Pipe Section
23
5
/
8
"
36-8DM
Pipe Section
34
5
/
8
"
48-8DM
Pipe Section
46
5
/
8
"
RTL-8DM Round Termination 7
3
/
4
"*
ETL-8DM Square Chase with
Slip Section
7" to
15"*
* The lineal gain for the terminations is mea
-
sured to the flue gas outlet height.
Figure 7 - Lineal Gain
Hemmed
End
8"
Stainless
Inner Pipe
12
3
/
8
"
Galvanized
Outer Pipe
OPTIONAL OUTSIDE AIR KIT
(MODEL AK-6)
The installation of an outside air kit should be
completed during the rough framing of fireplace
due to the nature of its location. Outside combus
-
tion air is accessed through mobile home floor
using air kit model AK-6 or a side wall using air kit
model AK-6WI (see
Accessories
on page 14).
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.
Figure 6 - Outside Air Kit Installation
Secure to Collars with Metal Tape, Screws
or Tie Straps (Min. of 1/4" x 20" size)
Air Inlet
(Located
on Left
and Right
Side of
Fireplace)
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Mobile
Home Floor
Insulation
VenTing inSTallaTion
CHIMNEY PIPE
The Style Crest, Inc. chimney system consists of
12", 18", 24", 36" and 48" snap-lock, double-wall
pipe segments, planned for maximum adaptabil
-
ity 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 7). Lineal gain is
the actual measurable length of a part after two
or more parts are connected.
There are two vent kits available which have been
specially designed for common installations in
manufactured (mobile) homes: MW8K (8' vent kit)
and MW9K (9' vent kit). The contents of these kits
are listed under
Accessories
on page 14.
Most chimney systems for manufactured
houses require a standard straight installation
as described in this section. If an uncommon
offset installation is required, see page 7.
IMPORTANT:
If height of chimney assembly
exceeds requirements for transportation of
the home, the chimney installation may be
completed after home is sited.
Note: Termination must always be installed
after home is sited.