11
RFSDV34 Freestanding Direct Vent Gas Stove
10003550
Example:
According to the chart the maximum
horizontal vent length is 0’ (6 m). However, if a 90°
elbow is used in the horizontal vent, maximum horizon-
tal vent length is reduced to 17’ (5. m).
In Figure
9, the total of Dim. A and Dim. B must not exceed 17’
(5. m).
•
The maximum number of 45° elbows permitted per
installation is six (6). These elbows can be installed in
either the vertical or horizontal run.
•
For each 45° elbow installed in the horizontal run, the
length of the horizontal run MUST be reduced by 18”
(457 mm). This does not apply if the 45° elbows are
installed on the vertical part of the vent system.
•
The maximum number of elbow degrees in a system is
70°. (Fig. 1)
Example:
Elbow 1 = 90°
Elbow = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total angular variation = 70°
1 + + 3 + 4 = 70°
FP139
Fig. 12
Maximum elbow usage.
STEP 1
Locate vent opening on the wall. It may be necessary to
first position the stove and measure to obtain hole loca-
tion. Depending on whether the wall is combustible or
noncombustible, cut opening to size. (Fig. 13)
For combustible walls first frame in opening.
Combustible Walls:
(Fig. 13) Cut a 9
³⁄₈
”H x 9
³⁄₈
”W (40
x 40 mm) hole through the exterior wall and frame as
shown.
Noncombustible Walls:
(Fig. 13) Hole opening must be
7
¹⁄₂
” (190 mm) in diameter.
Vertical Sidewall Installations
VO584-100
Vent Opening
2/99 djt
Vent Opening for Combustible Wall
9
³⁄₈
”
(40mm)
9
³⁄₈
”
(40mm)
Stove Hearth
Framing
Detail
Opening for Noncombustible Wall
7
¹⁄₂
”
(190mm)
VO584-100
Fig. 13
Locate vent opening on wall.
7.5ʼ
(2286 mm)
FSDV 2 elbow 20 appl.
rev 0602 rjs
A + B =17’ (5. m) Max.
FP1496
Fig. 10
90° elbow used in horizontal vent run.
20ʼ
(6 m)
7.5ʼ
(2. m)
rev 0602 rjs
Pipe Straps
Every 3’ (914 mm)
Pipe Straps Every 3’
(914 mm)
Firestop / Zero
Clearance Sleeve
FP1497
Fig. 11
90° elbow used to increase height.
