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Pyromaster© H33BDVRRN/P
10004798
If there is 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. (Fig. 31)
The enlarged ends of the vent section
always face downward. (Fig. 33)
Typical Roof
Support Application
Typcal Ceiling
Support Application
FP1184
Fig. 32 Typical support applications.
6. Place firestop(s) #7DVFS or Attic Insulation Shield
#7DVAIS into position and secure. (Fig. 31)
7. Install roof support (Fig. 32) and roof flashing
making sure upper flange is below the shingles.
(Fig. 33)
8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 33)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig
34)
11. Apply high temperature sealant to 4” and 7” collars
of vertical vent termination and install.
11"
11"
Joist
Attic
Insulation
Shield
Ceiling
Installation
Upper Floor
Joist
Firestop Spacer
Nails (4)
CFM100
Fig. 31 Place firestop spacer(s) and secure.
Min.
2’ (610 mm)
CFM190
Fig. 34 Minimum termination to roof clearance.
#5 Sheet Metal
Screws
(3 per joint)
Sealant
Storm
Collar
#5 Sheet
Metal
Screws
(3 per joint)
Sealant
Storm
Collar
TWL101a
Fig. 33 Roof flashing.