74D3001
1
DVBL7 Series Gas Fireplace
Vent InStaLLatIon
TWL101a
Twist Lock Pipe
2/8/99 djt
3 #5 Sheet Metal
Screws per Joint
Sealant
Storm Collar
TWL101a
Figure 29 -
Roof Flashing
2 ft.
Min.
2 ft. Min.
X
12
H*
FP1971
Min chimney clearance
Termination
Vent
Storm Collar
Flashing
Lowest
Discharge
Opening
Concentric
Vent Pipe
1” Minimum Clearance to
Combustibles
FP1971
Horizontal Overhang
Figure 28 -
Minimum Chimney Clearance
roof pitch
h (feet)
Flat to 6/1
1.0
Over 6/1 to 7/1
1.5
Over 7/1 to 8/1
1.5
Over 8/1 to 9/1
.0
Over 9/1 to 10/1
.5
Over 10/1 to 11/1
3.5
Over 11/1 to 1/1
4.0
*H - Minimum height from roof to
lowest discharge opening of vent