Monessen Hearth HBDV300N/PV7 User Manual

Page of 64
HBDV7 Series Direct Vent Gas Fireplace
54D8000
3
VeNtING INStAllAtIoN
10. Add additional vent lengths for proper height. Figure 
41
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 ceil-
ing joists. If an attic is above ceiling level an Attic Insula-
tion  Shield  must  be  installed. The  enlarged  ends  of  the 
vent section always face downward.
FP1184
Typical roof/ceiling
support apps.
typical Roof 
Support 
Application
typical Ceiling  
Support 
Application
FP1184
Figure 39 - 
Venting Supports
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 40 - 
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
TWL101a
Twist Lock Pipe
2/8/99   djt
3 #5 Sheet Metal 
Screws per Joint
Sealant
Storm Collar
TWL101a
Figure 41 - 
Roof Flashing