Table of Contents
Advertisement
VENT INSTALLATION
3. Do not allow the flexible vent to bend in radius
tighter than 5°. Figure 27
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 inter-
vals prescribed by the flexible vent manufacturer;
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, a Vermont Castings
Group 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 29 and corresponding instruc-
tions for proper overlap, clamp and screw place-
ment.
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
Firestop
Figure 28 -
Typical Vertical Flex Vent Installation
20306746
Termination
Cap
Storm Collar
Roof Support
UL1777 Flex
PIpe
Screws
(3 Places equidistant just
DVFF8A/8
above gear clamp)
Adapter
FP1974
typical flex install
UL1777 Flex Vent
FP1974
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 28.
E. Installing flexible venting to horizontal termination
assemblies.
1. Connect the 5" flexible vent to the horizontal
termination as in Figure 30.
2. Connect the 8" flexible vent to the termination
ring as in Figure 30.
3. Review Figure 30 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 30.
Screws
(3 Places
equidistant
just above
gear clamp)
Gear Clamp
Figure 29 -
FP1975
Typical Pipe Connection
pipe connection
Gear Clamp
Figure 30 -
Typical Horizontal Flex Vent Installation
FP1976
horizontal flex
WDV See-thru Gas Fireplace
Rigid Pipe Length
Flex to Pipe Adapter
Gear Clamp
1
⁄
" Flexible Pipe and Adapter
3
4
Outer Collar Overlap
UL1777 Flex Vent
Vermont Castings
Group Horizontal
Vent Termination
1
⁄
" Flexible Pipe and
3
4
Collar Overlap
21
Advertisement
Table of Contents
