Vermont Castings DVRT41 Homeowner's Installation And Operating Manual page 20

DVRT41 Direct Vent Gas Fireplace
Max. Height 40' (12.2m)
Min. Height 8' (2.4m)
Max.
Height 40' (12.2m)
Min.
Height 8' (2.4m)
Fig. 39 Support straps for horizontal runs.
1 + 2 + 3 + 4 = 270°
1
2
3
4
Fig. 40 Maximum elbow usage.
20
Max. 10' (3m)
Support Straps
Every 3' (.9m)
Max. 10' (3m)
FP1183
1
2
3
4
FP1179
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 " x 9 " (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 " x 9 " (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.
Attic Insulation Shield
Upper Floor
11"
(279mm)
Ceiling Installation
Joist
Nails (4)
Fig. 41 Place firestop spacer(s) and secure.
11"
(279mm)
Firestop
Spacer
FP1029
10006740