Vermont Castings STLDVNSCSB Installation And Operating Instructions Manual page 30

Designer Series Direct Vent Gas Fireplace
4" x 7" Flex Pipe
If you prefer to use 4" x 7" flex pipe, you must install model
7TDVP58 reducer (5" x 8" to 4" x 7") onto the fireplace
collar. Then follow the the assembly guidelines for 5" x 8"
flex venting.
Flashing
Rigid Pipe
Length
Flex to Pipe
Adapter
(DVFFA/8)
Firestop
7TDVP58 5" x 8" to
4" x 7" Reducer
Figure 47 -
Typical Vertical Flex Vent Installation
30
Termination
Cap
Storm Collar
Roof Support
UL1777 Flex
PIpe
FP1974
typical flex install
UL1777 Flex Vent
FP1974
UL1777
Flex Vent
1 ⁄ " Flexible
3
4
Pipe and
Adapter
Outer
5" x 8" to 4" x 7"
Adapter (7TDVP58)
Figure 46 -
Typical 4" x 7" Appliance
Connection
Screws
(3 Places
equidistant
just above
gear clamp)
Gear
Clamp
Figure 48 -
Typical Pipe Connection
Screws
(3 Places equidistant just
above gear clamp)
Gear Clamp
Figure 49 -
Typical Horizontal Flex Vent Installation
FP1976
horizontal flex
VENTING INSTALLATION
Gear
Clamp
Appliance
Starting Collar
FP1972a
FP1972
appliance connection
4" x 7"
Rigid Pipe Length
Flex to Pipe Adapter
(DVFFA/8)
Gear Clamp
1 ⁄ " Flexible Pipe and Adapter
3
4
Outer Collar Overlap
UL1777 Flex Vent
FP1975
4 x 7 pipe connection
Vermont Castings
Group Horizontal
Vent Termination
1 ⁄ " Flexible Pipe and
3
4
Collar Overlap
Screws
(3 places,
equidistant just
above gear
clamp)
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