24
20306748
MLDV Series Gas Fireplace
VENTING INSTALLATION
D. Attaching
fl
exible venting to vertical termination
assemblies.
1. When using Duravent pipe, an Vermont Cast-
ings Group
fl
ex-to-pipe adapter 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 39
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 38
.
E. Installing
fl
exible venting to horizontal termination
assemblies.
Figure 38 -
Typical Vertical Flex Vent Installation
Screws
(3 Places equi-
distant just above
gear clamp)
Gear Clamp
UL1777
Flex Vent
1
3
⁄
4
" Flexible Pipe and
Collar Overlap
Vermont
Castings Group
Horizontal Vent
Termination
Figure 40 -
Typical Horizontal Flex Vent Installation
Termination
Cap
Storm Collar
Roof Support
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
Firestop
UL1777 Flex
PIpe
Screws
(3 Places
equidistant
just above
gear clamp)
Rigid Pipe Length
Flex to Pipe Adapter
Gear Clamp
1
3
⁄
4
" Flexible Pipe and Adapter
Outer Collar Overlap
UL1777 Flex Vent
Figure 39 -
Typical Pipe Connection
Gear
Clamp
DVFF8A/8 5" x 8" to
5" x 8" Flex Adapter
1. Connect the 5"
fl
exible vent to the horizontal
termination as in
Figure 40
.
2. Connect the 8"
fl
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
.