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26
75D2525
DVM Series Direct Vent Gas Fireplace
Termination
Cap
Storm Collar
Roof Sup-
port
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
Firestop
UL1777 Flex
PIpe
Figure 38 -
Typical Vertical Flex Vent Installation
Screws
(3 Places
equidistant
just above
gear clamp)
Rigid Pipe Length
Flex to Pipe Adapter
Gear Clamp
1C\v" Flexible Pipe and
Adapter Outer Collar Over-
lap
UL1777 Flex Vent
Figure 39 -
Typical Pipe Connection
Gear Clamp
Screws
(3 Places equidistant
just above gear clamp)
Gear Clamp
UL1777 Flex Vent
1C\v" Flexible Pipe
and Collar Overlap
MHSC Horizontal
Vent Termination
Figure 40 -
Typical Horizontal Flex Vent Installation
DVFF8A/8 5" x 8"
to 5" x 8" Adapter
FP1974
2. Install restop spacers, Figure 38, when penetrat-
ing ceiling, attic spaces, or walls.
3. Do not allow the exible vent to bend in radius
tighter than 5" (127 mm). Figure 37
4. Horizontal runs of exible vent shall be supported
at maximum 2 foot intervals; vertical runs, ve feet
intervals. Metal strapping, properly secured, is an
acceptable means to support the exible vent.
5. Flexible vent spacers are to be installed at inter-
vals prescribed by the exible vent manufacturer;
and in such a way as to maintain concentric inner
and outer vent spacing.
D. Attaching exible venting to vertical termination
assemblies.
1. When using 5 x 8 ex pipe, an MHSC ex-to-pipe
adapter and/or rigid pipe section(s) is required to
connect the exible vent assembly to the verti-
cal termination by using three self-penetrating
screws.
2. Review Figure 39 and corresponding instruc-
tions 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 38.
E. Installing exible venting to horizontal termination
assemblies.
1. Connect the 5" exible vent to the horizontal
termination as in Figure 40.
2. Connect the 8" exible vent to the termination
ring as in Figure 40.
3. Review Figure 40 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 40.
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