Use Of Flex Vent - Heat & Glo ST-550TM-IPI Owner's Manual

E. Use of Flex Vent
The flex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than
TERMINATION CAP
3 in. CLEARANCE
1/2 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 7.3) requires only enough sup-
FLEX VENT
port to maintain the necessary clearance to combustibles.
However, the vent attachment point and the firestop loca-
1 in. CLEARANCE
tion are considered to be supports.
Figure 7.3
Heat & Glo • ST-550TM-IPI • 2142-900 Rev. S • 3/20
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