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Hearth & Home Technologies • DV3732SBI, DV3732SBIL • 2215-900 • 9/09
E. Use of Flex Vent
The fl ex vent must be supported with the
spacing between support intervals not ex-
ceeding 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 7.3) requires
only enough support to maintain the neces-
sary clearance to combustibles. However,
the vent attachment point and the fi restop
location are considered to be supports.
Figure 7.3
3 in. CLEARANCE
TERMINATION
CAP
FLEX-VENT
1 in.
CLEARANCE
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