18
BDVT Series Direct Vent Gas Fireplace
10003358
If there is a room above ceiling level,
firestop spacer must be installed on both
the bottom and the top side of the ceiling
joists. If an attic is above ceiling level a
7DVAIS (Attic Insulation Shield) must be
installed.
The enlarged ends of the vent section
always face downward. (Fig. 32)
Typical Roof Support
Application
Typical Ceiling
Support Application
CFM110
Fig. 31 Roof and ceiling supports.
Min.
2’ (610 mm)
CFM190
Fig. 33 Minimum termination to roof clearance.
7. Install roof support (Fig. 31) and roof flashing
making sure upper flange of flashing is below the
shingles. (Fig. 32)
8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 32)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig.
33)
11. Apply high temperature sealant to 4” and 7” collars.
#8 Sheet Metal Screws
(3 per joint)
Sealant
Storm Collar
TWL101a
Fig. 32 Roof flashing.
