14
30803 Rev X
08/04
CALIBER DIRECT VENT INSTALLATION INSTRUCTIONS
3)
Two Elbows
Elbows used in rear-vented configurations
should be either a 90-deg elbow or a 45-deg
elbow.
Starter elbows cannot be used in
any rear vented configuration.
Figure 30
shows various venting configurations using
two elbows to terminate horizontally.
Figure 31 - Three Elbows
4)
Three Elbows
Elbows used on rear-vented configurations
should be either a 90-deg elbow or a 45-deg
elbow.
Starter elbows cannot be used in
any rear vented configuration.
Figure 31 shows various venting
configurations using three elbows to
terminate horizontally.
d.
Installing the Interior Wall Shield
Whenever a combustible wall is penetrated, the
hole must be framed (as shown in Figure 32) to
receive an interior wall shield (see Figure 33).
This shield maintains minimum clearances and
restricts cold air infiltration.
The termination cap height must meet all local
and national codes and not be easily blocked or
obstructed.
If the wall being penetrated is of noncombustible
materials, a 9 in. diameter hole is acceptable.
Note:
Exterior wall thickness must be a
minimum of 4 in. to a maximum of 17-1/2 in.
Figure 32
Exterior Wall Hole
Figure 30
Two Elbows
Starter elbows cannot be
used in any rear vented
configuration.
h
1
= 1 ft
h
1
= 2 ft
h
1
= 3 ft
v
h
2
v
h
2
v
h
2
1 ft
4ft
1 ft
2 ft
1 ft
4 ft
2 ft
6 ft
2 ft
4 ft
2 ft
5 ft
3 ft
9 ft
3 ft
6 ft
3 ft
6 ft
4 ft
11 ft
4ft
8 ft
4 ft
8 ft
20 ft
max
11 ft
max
20 ft
max
8 ft
max
20 ft
max
8 ft
max
Starter elbows cannot be
used in any rear vented
configuration.
w
v (min) h
1
+ h
2
0 ft
1 ft
5 ft
0 ft
2 ft
7 ft
0 ft
3 ft
7 ft
0 ft
4 ft
8 ft
max
1 ft
1 ft
3 ft
1 ft
2 ft
4 ft
1 ft
3 ft
4 ft
1 ft
4 ft
6 ft
2 ft
1 ft
2 ft
2 ft
2 ft
3 ft
2 ft
3 ft
3 ft
2 ft
4 ft
4 ft
f i r e - p a r t s . c o m