10
RESTRICTOR REQUIREMENTS
For each additional 90° elbow used after first elbow, 3ft. (914mm) must be subtracted from maximum allowed venting. For each 45° elbow
used, 1-1/2ft. (457mm) must be subtracted from maximum venting allowed.
ELBOWS
VENTING
Each installation is unique and affected by various factors including venting configuration, altitude and climate. Therefore, after fireplace
installation is complete a restrictor may be required or may need to be removed or modified.
Page 16 has information on restrictor recommendations depending on burner flame appearance and instructions on installation after venting
is completed.
RESTRICTOR
Slide restrictor into exhaust pipe at top of fireplace
with tabs pointing towards you prior to attaching
venting.
HOR. / VERT. COMBINATION
0
2
4
6
8
10
12
14
16
20
22
18
24
26
28
30
40
38
36
34
32
10 12 14 16 18 20 22 24 26 28 30
(6.1m)
(6.
1m
)
Termination must be
within shaded area
(ft.)
0 2 4 6 8
(12.9m)
(9.14m)
Figure 10b
Figure 10a
NOTE
(2) 45° elbows may be used in place of (1) 90° elbow.
Large Restrictor
Remove tab (s) to
create small restrictor
Bend tabs to approx. 80 degree
angles to create tension to hold
itself in place when installed.
Small restrictor: Straight vertical vent runs between 10' - 15' (3.048m - 4.572m).
Large restrictor: Straight vertical vent runs between 15' - 40' (4.572m - 12.19m).
