| MAX. |
| 8 FEET |
| 2438mm |
45° |
|
| 40 FEET |
MAX. | (12.2m) |
8 FEET |
|
2438mm |
|
| 45° |
TYPICAL OFFSET INSTALLATION | |
| Fig. 34 |
TYPICAL 7DVCS
APPLICATION
Fig. 35
TYPICAL ROOF |
SUPPORT |
APPLICATION |
Fig. 36 |
VERTICAL THRU THE ROOF INSTALLATION
1.Locate your fireplace.
2.Plumb to centre of the (4") 90º transition elbow (7DVRT90) from ceiling above and mark position.
3.Cut opening equal to
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
5.Place firestop(s) #7DVFS into position and secure. (Fig. 38)
6.Install roof support (Fig. 35) and roof flashing making sure upper flange of flashing is below the shingles. (Fig. 39)
7.Install appropriate pipe sections until above the flash- ing. (See Fig. 39 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 | 11" |
| VENT TERMINATION |
|
| STORM COLLAR |
|
ROOF | ROOF FLASHING |
|
2' Min. |
| |
|
| |
| ROOF SUPPORT |
|
ATTIC INSULATION |
| |
| CEILING JOISTS | |
| JOISTS |
|
40 FEET | ATTIC INSULATION |
|
(12.2m) |
| |
SHIELD |
| |
| TYPICAL | Fig. 37 |
|
| |
Clearance above a roof shall extend a mini- mum of 24" (610mm) above the highest point when it passes through the roof surface, and any other obstruciton within a horizontal distance of 18" (450mm).
- 17 -
|
| JOIST |
Ceiling | 11" | UPPER FLOOR |
Installation |
| |
|
| |
|
| JOIST |
FIRESTOP
SPACER
NAILS (4) | Fig. 38 |
Fig. 38 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. 39. The enlarged ends of the vent section always face downward.
SHEETMETAL 
SCREWS (#5) —
3 PER JOINT
SEALANT
STORM
COLLAR
Fig. 39