Vermont Casting DVRT39, DVRT43, DVRT36 manual Vertical Sidewall Installation, 10002428

Vermont Castings, Majestic Products DVRT36/39/43

	B
	7’
	(2134mm)
	A
	10’
	(3048mm)
	90° Elbow = 3’
	A + B = 17’ (5.2m)
7’ 6”	Max.
(2286mm)
	V584-201
Fig. 25b	Maximum vent run with elbows.

In Fig. 25a and Fig. 25b, Dim. A plus Dim. B must not be greater than 17’ (5.2m).

•The maximum number of 45° elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.

•For each 45° elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18” (45cm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.

•The maximum number of elbow degrees in a system is 270°. (Fig. 26)

Example:
	Elbow 1	=	90°
	Elbow 2	=	45°
	Elbow 3	=	45°
	Elbow 4	=	90°
Total angular variation		=	270°

	1 + 2 + 3 + 4 = 270°
1	1
2	2
3	3
4	4
	FP1180
Fig. 26	Maximum elbow usage.
10002428

Vertical Sidewall Installation

Step 1

Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or noncombustible, cut opening to size.

For combustible walls, first frame in opening. (Fig. 27)

Combustible Walls: Cut a 9³⁄₈” H x 9³⁄₈” W

(240 x 240mm) hole through the exterior wall and frame as shown.

Noncombustible Walls: Hole opening must be 7¹⁄₂” (190mm) in diameter.

Vent Opening - Combustible Wall

9³⁄₈”

(240mm)

9³⁄₈”

(240mm)

Framing Detail

Fireplace Hearth

Vent Opening - Noncombustible Wall

	7¹⁄₂” Dia.
	(190mm)
	VO584-100
Fig. 27	Locate vent opening on wall.
	Maximum Length
	12” (305mm)
	#8 Screws (2)
#8 Screws (2)
	Side View
	Firestop
	CFM135a
Fig. 28 Adjustable zero clearance sleeve.

Zero clearance sleeve is required only for combustible walls.

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