Flex Vent Installation - MHSC WDV500 Installation And Operating Instructions Manual

Flex Vent InstallatIOn

2. Install firestop spacers, Figure 29, when penetrating ceiling, attic spaces, or walls.
3. Do not allow the flexible vent to bend in radius tighter than 5°. Figure 28
4. Horizontal runs of flexible vent shall be supported at maximum 2 foot intervals; vertical runs,
five feet intervals. Metal strapping, properly secured, is an acceptable means to support the
flexible vent.
5. Flexible vent spacers are to be installed at intervals prescribed by the flexible vent manufac-
turer; and in such a way as to maintain concentric inner and outer vent spacing.
D. Attaching flexible venting to vertical termination assemblies.
1. When using Simpson pipe, an MHSC flex-to-pipe adapter (FPA) and/or rigid pipe section(s) is
required to connect the flexible vent assembly to the vertical termination by using three self-
penetrating screws.
2. Review Figure 30 and corresponding instructions for proper overlap, clamp and screw place-
ment.
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 29.
E. Installing flexible venting to horizontal termination assemblies.
1. Connect the 5" flexible vent to the horizontal termination as in Figure 31.
2. Connect the 8" flexible vent to the termination ring as in Figure 31.
3. Review Figure 31 for proper overlap and clamp placement.
4. Three each self-penetrating screws are drilled opposite one another and below the gear
lamp.
5. Use only listed an approved terminations and accessories, installed per the termination instruc-
tions and Figure 31.
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
Firestop
Figure 29 -
Typical Vertical Flex Vent Installation
78D0011
Termination
Cap
Storm Collar
Roof Support
UL1777 Flex
PIpe
Screws
(3 Places equidistant just
DVFF8A/8
above gear clamp)
Adapter
UL1777 Flex Vent
FP1974
Screws
(3 Places
equidistant
just above
gear clamp)
Gear Clamp
Figure 30 -
FP1975
Typical Pipe Connection
pipe connection
Gear Clamp
Figure 31 -
Typical Horizontal Flex Vent Installation
FP1976
horizontal flex
WDV Series Gas Fireplace
Rigid Pipe Length
Flex to Pipe Adapter
Gear Clamp
1C\v" Flexible Pipe and Adapter
Outer Collar Overlap
UL1777 Flex Vent
MHSC Horizontal
Vent Termination
1C\v" Flexible Pipe and
Collar Overlap
21