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CDVSC7 & CDV7 Series Gas Fireplace
6
69D3011
VenTInG InSTallaTIon     
FP1184
Typical roof/ceiling
support apps.
Typical Roof 
Support 
application
Typical Ceiling  
Support 
application
FP1184
Figure 37 - 
Venting Supports
TWL101a
Twist Lock Pipe
2/8/99   djt
3 #5 Sheet Metal 
Screws per Joint
Sealant
Storm Collar
TWL101a
Figure 39 - 
Roof Flashing
9.  Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. Fig-
ure 39
11. Apply high temperature sealant to 4” and 7” collars 
of vertical vent termination and install.
If there is a room above ceiling level, fire stop spacer 
must be installed on both the bottom ad the top side 
of the ceiling joists. If an attic is above ceiling level an 
Attic Insulation Shield must be installed. The enlarged 
ends of the vent section always face downward.
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 38 - 
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