Majestic Appliances DVB4136 - Manual (Page 22)

22
DVB4136 Direct Vent Gas Fireplace
20012322
Max. Height 40’ (12.2 m)
Min. Height 8’ (2.4 m)
Max. 10’ (3 m)
Support Straps
Every 3’ (.9 m)
Max.
Height 40’ (12.2 m)
Min.
Height 8’ (2.4 m)
Max. 10’ (3 m)
FP1183
Fig. 39 Support straps for horizontal runs.
1
2
3
4
1
2
3
4
FP1179
Fig. 40 Maximum elbow usage.
1 + 2 + 3 + 4 = 270°
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 9³⁄₈” x 9³⁄₈” (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 9³⁄₈” x 9³⁄₈” (240 mm x 240 mm).
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.
44)
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.
FP1029
attic insulation shield
firestop spacers
1/28/00 djt
Attic Insulation
Shield
Upper Floor
11”
(279 mm)
Ceiling Installation
Joist
Firestop
Spacer
Nails (4)
FP1029
Fig. 41 Place firestop spacer(s) and secure.
11”
(279 mm)