www.fmiproducts.com
55511F
7
Figure 13 - Pipe Connection
LINEAL GAIN
PART NO.
DESCRIPTION
GAIN
(V)(I)368ST
See-Through
54"
12-8DM
Flue Pipe
10
5
/
8
"
18-8DM
Flue Pipe
16
5
/
8
"
24-8DM
Flue Pipe
23
5
/
8
"
36-8DM
Flue Pipe
34
5
/
8
"
48-8DM
Flue Pipe
46
5
/
8
"
RTL-8DM
RTTL-8DM
Round Top
Termination
6"
ETL-8M
ETO-8DM
ETLO-8DM
Econo-Top
Termination
1" to 12"
Hemmed
End
8" Stainless
Inner Pipe
Lanced Side
Up
12
3
/
8
" Galvanized
Outer Pipe
Figure 12 - Outside Air Kit Installation
Secure to Collars with
Duct Tape or Screws
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Termination
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)
CHIMNEY PIPE
The FMI PRODUCTS, LLC chimney system is
a snap-lock, double-wall pipe. It consists of a
stainless steel inner flue pipe(s), a galvanized
outer pipe and a wire spacer. Each section of
pipe comes in lengths of 12", 18", 36" and 48".
The actual lineal gain for each is measured
after each section is fully connected. Lineal
gain is the actual measurable length of a part
after two or more parts are connected.
PIPE INSTALLATION
The pipe sections must be assembled indepen-
dently as the chimney is installed. When connect-
ing chimney directly to the firebox, the inner flue
VenTing inSTALLATion
Continued
ing joist space. Their purpose is to establish
and maintain the required clearance between
the chimney and the combustible materials.
When penetrating a floor or ceiling at an angle,
use firestop spacer number 30FS-8DM (see
Replacement and Accessory Parts
, page 14).
When the pipe passes through a framed open-
ing into a living space above, the firestop must
be placed onto the ceiling from below as shown
in Figure 14, page 8. When the pipe passes
through a framed opening into an attic space
above, the firestop must be placed on the attic
floor as shown in Figure 15, page 8.
pipe section must be installed first with the lanced
side up. The outer pipe section can then be in-
stalled 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 firebox
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
(see Figure 13). When installing 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.
FIRESTOP SPACERS FS-8DM
Firestop spacers are required at each point
where the chimney penetrates a floor or ceil-
WARNING: The opening in the
collar around the chimney at the top
of the firebox must not be obstruct-
ed. Never use blown insulation to
fill the chimney enclosure.
