Heatilator • GDST3831I • 2127-900 Rev. N • 6/15
28
H
2
H
1
V
2
V
1
Figure 7.6
1. Top Vent - Horizontal Termination
- (continued)
Three Elbows
V
1
Minimum**
H
1
+ H
2
Maximum
V
2
V
1
+ V
2
Min.
90 Elbow**
2 ft.
610 mm
*
*
1/2 ft.**
152 mm
6 ft.
1.8 m
*
*
1-1/2 ft.**
457 mm
10 ft.
3 m
*
*
2-1/2 ft.**
762 mm
12 ft.
3.7 m
*
*
3-1/2 ft.
1.1 m
14 ft.
4.3 m
*
*
H
1
+ H
2
Max. =14 ft. (4.3 m)
*No speci
fi
c restrictions on this value
EXCEPT V
1
+ V
2
+ H
1
+ H
2
cannot exceed 40 ft. (12.2 m)
See Warning Below**
Note
: There MUST be a 25%
reduction in total H when using
fl
ex vent except when using the
simple up and out installation
(see Figure 7.3).
WARNING**
Fire Risk.
• When using SLP-HRC-SS and SLP-HRC-ZC-SS
termination caps on top vented
fi
replaces, a one
foot minimum vertical vent section is required before
installing
fi
rst elbow
.
• When using DVP-TB1 termination cap on top vented
fi
replaces, a three foot minimum vertical vent section
is required before installing
fi
rst elbow.
• When using any other cap, a section of vertical pipe (12 inches
minimum) MUST be installed prior to attaching a 90° elbow.
