Vermont Castings VWDVP70NTSC Installation And Operating Instructions Manual page 23

FLEX VENT INSTALLATION
4. Horizontal runs of fl exible vent shall be supported
at maximum 2 foot intervals; vertical runs, fi ve feet
intervals. Metal strapping, properly secured, is an
acceptable means to support the fl exible vent.
5. Flexible vent spacers are to be installed at inter-
vals prescribed by the fl exible vent manufacturer;
and in such a way as to maintain concentric inner
and outer vent spacing.
D. Attaching fl exible venting to vertical termination
assemblies.
1. When using Duravent pipe, an Vermont Castings
Group fl ex-to-pipe adapter (FPA) and/or rigid pipe
section(s) is required to connect the fl exible vent
assembly to the vertical termination by using
three self-penetrating screws.
2. Review Figure 33 and corresponding instructions
for proper overlap, clamp and screw placement.
3. Three each self-penetrating screws are drilled
opposite one another and below the gear clamp.
4. Use only listed and approved terminations and
accessories, installed per the installation instruc-
tions and Figure 32.
E. Installing fl exible venting to horizontal termination
assemblies.
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
Firestop
Figure 32 -
Typical Vertical Flex Vent Installation
20306745
Termination
Cap
Storm Collar
Roof Support
UL1777 Flex
PIpe
DVFF8A/8
Adapter
FP1974
1. Connect the 5" fl exible vent to the horizontal
termination as in Figure 34.
2. Connect the 8" fl exible vent to the termination
ring as in Figure 34.
3. Review Figure 34 for proper overlap and clamp
placement.
4. Three each self-penetrating screws are drilled
opposite one another and below the gear clamp.
5. Use only listed an approved terminations and
accessories, installed per the termination instruc-
tions and Figure 34.
Screws
(3 places
equidistant
just above
gear clamp)
Gear Clamp
Figure 33 -
Typical Pipe Connection
Screws
(3 Places
equidistant just
above gear
clamp)
UL1777
Flex Vent
Gear Clamp
Figure 34 -
Typical Horizontal Flex Vent Installation
VWDV70 Series Gas Fireplace
Rigid Pipe Length
Flex to Pipe Adapter
Gear Clamp
1 ⁄ " Flexible Pipe and
3
4
Adapter Outer Collar
Overlap
UL1777 Flex Vent
Vermont Castings
Group Horizontal
Vent Termination
1 ⁄ " Flexible Pipe and
3
4
Collar Overlap
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