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Heatilator • GDST3831I • 2127-900 Rev. K • 7/1228
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 specifi 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.