Vermont Casting DBT36 - Manual (Page 17)

10002789/0 -17- DBT33/DBT36/DBT39
V
ERTICAL
T
HROUGH
-T
HE
-R
OOF
I
NSTALLATION
1. Locate your replace.
2. Plumb to centre of the (4") ue 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 at
least 9-3/8" x 9-3/8" (240 mm x 240 mm).
5. Place replace into position.
6. Place restop(s) #7DVFS or Attic Insulation Shield
#7DVAIS into position and secure. (Fig. 35)
7. Install roof support (Fig. 36) and roof ashing making
sure upper ange of ashing is below the shingles. Fig.
37.
8. Install appropriate pipe sections until the venting is above
the ashing. (See Fig. 37).
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. Fig. 38.
11. Apply high temperature sealant to 4" and 7" collars of
vertical vent termination and install.
If there is a room above ceiling level, restop
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. 37.
Fig. 35
Fig. 36
Fig. 37
Fig. 38