Measuring Standards; Use Of Flex Vent; Vent Diagrams - Heatilator ECLIPSE-32 Installation Manual

E. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Section 12.A (Figure 12.1 for DVP, Figure
12.6 for SLP) for information on effective length of pipe
components.
• Horizontal terminations are measured to the outside
mounting surface (fl ange of termination cap). See
Figure 4.3.
• Vertical terminations are measured to bottom of
termination cap.
• Horizontal pipe installed level with no rise.
F. Use of Flex Vent
The fl ex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than
½ inch sag between supports.
A support is required at each change in venting direction,
and in any location where it is necessary to maintain the
necessary clearance to combustibles. A simple "up and
out" installation (Figure 4.6) requires only enough sup-
port to maintain the necessary clearance to combustibles.
However, the vent attachment point and the fi restop loca-
tion are considered to be supports.
3 in. CLEARANCE
FLEX-VENT
Figure 4.6
TERMINATION
CAP
1 in.
CLEARANCE
Heatilator • ECLIPSE-32, ECLIPSE-36 Installation Manual • 2297-984 Rev. B • 6/15
G. Vent Diagrams
General Rules:
• SUBTRACT 3 ft. from the total H measurement for each
90º elbow installed horizontally.
• SUBTRACT 1-1/2 ft. from the total H measurement for
each 45º elbow installed horizontally.
• When penetrating a combustible wall, a wall shield
fi restop must be installed.
• When penetrating a combustible ceiling, a ceiling fi restop
must be installed.
• Horizontal runs of vent do not require vertical rise;
horizontal runs may be level.
• Horizontal termination cap should have a 1/4 inch
downward slant to allow any moisture in cap to be
released. See Figure 4.7.
1/4 in. max.
(6 mm)
Figure 4.7

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