Vermont Casting DVBR42, DVBR36 manual Vertical Through-the-Roof Installation, Downward

DVBR Series Direct Vent Gas Fireplace
		5. Place firestop(s) #7DVFS into position and secure.
			(Fig. 43)
Max. Height 40’ (12.2m)		6.	Install roof support (Fig. 44) and roof flashing
Min. Height 8’ (2.4m)
			making sure upper flange of flashing is below the
			shingles. (Fig. 46)
	Max. 10’ (3m)	7. Install appropriate pipe sections until above the
			flashing. (Fig. 46)
		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.
		If there is a room above ceiling level, firestop spacers
		must be installed on both the bottom and the top side
		of the ceiling joists. If an attic is above ceiling level
Max. Height		a 7DVAIS (Attic Insulation Shield) must be installed.
	Max. 10’ (3m)	The enlarged ends of the vent section always face
40’ (12.2m)
Min. Height 8’		downward.
(2.4m)
		Attic Insulation Shield
	FP1183
Fig. 41 Support straps for horizontal runs.			11”	11”
				Upper Floor
		Joist
1 + 2 + 3 + 4 = 270°
		Ceiling		Firestop
1	1	Installation		Spacer
2
	2
3
	3
4				Nails (4)
	4	VR404
		Fig. 43 Place firestop spacer(s) and secure.

FP1179

Fig. 42 Maximum elbow usage.

Vertical Through-the-Roof Installation

1.	Locate your fireplace.		Typical Roof
2.	Plumb to center of the (4”) 90° transition elbow		Support Ap-	Typical Ceiling Sup-
	(7DVRT90) from ceiling above and mark position.		plication
				port Application
3.	Cut opening equal to 9³⁄₈" x 9³⁄₈" (240 x 240 mm).			FP1184
4.	Proceed to plumb for additional openings through
		Fig. 44	Venting supports.
	the roof. In all cases, the opening must provide a

minimum of 1” (25 mm) clearance to the vent pipe, i.e., the hole must be a minimum of 9³⁄₈" x 9³⁄₈" (240 x 240 mm).

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