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MAX.
8 FEET
2438mm
45°
40 FEET
(12.2m)
MAX.
8 FEET
2438mm
45°
TYPICAL OFFSET INSTALLATION
VENT TERMINATION
ROOF
2' Min.
ATTIC INSULATION
JOISTS
40 FEET
ATTIC INSULATION
(12.2m)
SHIELD
TYPICAL STRAIGHT-UP INSTALLATION
Clearance above a roof shall extend a
minimum of 24" (610mm) above the
highest point when it passes through
the roof surface, and any other
obstruciton within a horizontal dis-
tance of 18" (450mm).
TYPICAL 7DVCS
APPLICATION
Fig. 29
TYPICAL ROOF
SUPPORT
APPLICATION
Fig. 28
Fig. 30
STORM COLLAR
ROOF FLASHING
ROOF SUPPORT
CEILING JOISTS
Fig. 31
VERTICAL THRU THE ROOF INSTALLATION
1. Locate your fireplace.
2. Plumb to centre of the (4") collar from ceiling above and
mark position.
3. Cut opening equal to 9-3/8" x 9-3/8" (240 mm x 240
mm).
4. Proceed to plumb for additional openings through the
roof. In all cases, the opening must provide a minimum
of 1 inch clearance to the vent pipe, i.e., the hole must
be a minimum of 9-3/8" x 9-3/8" (240 mm x 240 mm).
5. Place firestop(s) 7DVFS into position and secure. (Fig.
32)
6. Install roof support (Fig. 30) and roof flashing making
sure upper flange of flashing is below the shingles.
(Fig. 33)
7. Install appropriate pipe sections until above the flash-
ing. (See Fig. 31 for #'s 7, 8 and 9).
8. Install storm collar and seal around the pipe.
9. Add additional vent lengths for proper height.
10. Apply high temperature sealant to 4" and 7" collars of
vent termination and install.
Attic
Insulation
Shield
Ceiling
Installation
Fig. 32 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.
Fig. 33. The enlarged ends of the vent section
always face downward.
- 15 -
11"
11"
JOIST
11"
UPPER FLOOR
11"
JOIST
FIRESTOP
SPACER
NAILS (4)
SHEETMETAL
SCREWS (#5) —
3 PER JOINT
SEALANT
STORM
COLLAR
Fig. 33
Fig. 32
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