Vermont Casting DVRT41 - Manual (Page 20)

20
DVRT41 Direct Vent Gas Fireplace
10006740
Vertical Through-the-Roof Installation
1. Locate your fireplace.
2. Plumb to center of the (4”) flue collar from ceiling
above and mark position.
3. Cut opening equal to 9 ³⁄₈ ” x 9 ³⁄₈ ” (240mm x 240mm).
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 ” (240mm x
240mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield
#7DVAIS into position and secure. (Fig. 41)
7. Install roof support (Fig. 42) and roof flashing
making sure upper flange is below the shingles.
(Fig. 44)
8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 44)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig.
43)
11. Apply high temperature sealant to 4” and 7” collars
of vertical vent termination and install.
If there is a room above ceiling level, fire stop spacer
must be installed on both the bottom ad 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.
Joist
Attic Insulation Shield
Ceiling Installation
Upper Floor
11"
(279mm)
Firestop
Spacer
Nails (4)
Fig. 41 Place firestop spacer(s) and secure.
FP1029
11"
(279mm)
1
2
3
4
1
2
3
4
1 + 2 + 3 + 4 = 270
°
FP1179
Fig. 40 Maximum elbow usage.
Max. Height 40’ (12.2m)
Min. Height 8’ (2.4m)
Max. 10’ (3m)
Support Straps
Every 3’ (.9m)
Max.
Height 40’ (12.2m)
Min.
Height 8’ (2.4m)
Max. 10’ (3m)
FP1183
Fig. 39 Support straps for horizontal runs.