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GASLINE INSTALLATION
8
CHIMNEY PIPE INSTALLATION
PIPE INSTALLATION
FIRESTOP SPACERS
GAS LINE INSTALLATION
Continued
WARNING: After ensuring that the gas valve is ON,
test all gas piping and connections for leaks after
installing or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
Note: An appropriate DESA hood (see Replacement and Accessory
Parts, page 16) must be installed when using an unvented gas log set.
CAUTION: When using a decorative appliance,
the damper must be removed or permanently locked
in the open position.
VENTING INSTALLATION
CHIMNEY PIPE INSTALLATION
The DESA 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 inches,
but 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.
MODEL NO.
V3612ST
48-12DM/48-12TM
36-12DM/48-12TM
24-12DM/48-12TM
18-12DM/48-12TM
12-12DM/48-12TM
STL-12D
RTL-12D
Round Top Termination
DESCRIPTION
GAIN
See-Through"
52
Fireplace
Flue Pipe
46
Flue Pipe
34
Flue Pipe
22
Flue Pipe
16
Flue Pipe
10
Chase Style
1" to 12"
Termination
For more information, visit www.desatech.com
For more information, visit www.desatech.com
PIPE INSTALLATION
Place pipe assembly (inner and outer with wire spacer) over starter
collar. Inner pipe(s) fit inside inner pipe(s). Outer pipe fits outside
outer pipe.
Begin by aligning hemmed end of inner flue pipe into the inner starting
fluepipeoffireplace.Pushdownuntilhem"snap-locks"withlances.The
outer pipe is just the opposite, the female end has the lances. Continue the
sameprocedurefortheouterpipe(seeFigure16).It isimportanttoassure
thejointsbetweenthechimneysectionsarefullylocked.Checkbypulling
chimney upward after locking pipe hem(s). The chimney should not
come apart if properly locked. It is not necessary to add screws to keep
vertical or angled chimney runs together.
WARNING: The opening around the starter collar on
topof thefireplacemustneverbeobstructed.Neveruse
blown insulation to fill the chimney enclosure.
Hemmed
Ends
Figure 16 - Pipe Connection
FIRESTOP SPACERS
/
"
Firestop spacers are required at each point where the chimney
3
4
penetrates a floor or ceiling joist space. Their purpose is twofold.
They establish and maintain the required clearance between the
/
"
5
8
outer pipe and combustible materials, they also serve as a shield
/
"
5
between floors as required by most codes.
8
/
"
5
When penetrating a floor or ceiling at an angle, use firestop spacer
8
number 30 FS-10D (see Replacement and Accessory Parts,
/
"
5
8
back page).
/
"
5
8
When the pipe passes through a framed opening into a living space
above, a firestop must be placed on the ceiling below (see Figure 17,
page 9). When the pipe passes through a framed opening into an attic
space above, a firestop must be placed on the attic floor above (see
Figure 18, page 9).
7"
15" (381mm)
Galvanized
Outer Pipe
12 3/8" (314mm)
Stainless Inner
Pipe Lanced
Side Up
115607-01A
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