Vermont Casting DVR33 manual Vertical Sidewall Installation, Vent Opening Noncombustible Wall

Vermont Castings, Majestic Products: DVR33

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, frame in opening first (Fig. 24).

Combustible Walls: Cut a 9C\,”H x 9C\,” W (240 mm x 240 mm) hole through the exterior wall and frame.

Noncombustible Walls: Hole opening must be 7Z\x” (190 mm) in diameter.

Vent Opening: Combustible Wall

93/8”

(240 mm)

93/8”

(240 mm)

Framing Detail

Fireplace Hearth

Vent Opening:

Noncombustible Wall

71/2” Dia.

(190 mm)

VO584-100

Fig. 24 Locate vent opening on wall.

12"
(304.8 mm)
max.
#8 Screws (2)
#8 Screws (2)
Firestop
(Side View)	CFM135a

Fig. 25 Adjustable zero clearance sleeve.

	X
	VSW height X
Fig. 26	Vertical height requirements.

Step 3

Place fireplace into position. Measure the vertical height (X) required from the base of the flue collars to the center of the wall opening (Fig. 26).

Step 4

Apply a bead of high temperature silicone sealant to the inner and outer flue collars of the fireplace and using appropriate length of pipe section(s) attach to fireplace with three (3) screws. Follow with the installa- tion of the inner and outer elbow, again secure joints as described in the ‘Connecting Vent Pipe’ section.

Step 5

Measure the horizontal length requirement including a 2” (50 mm) overlap, i.e. from the elbow to the outside wall face plus 2” (50 mm)—or the distance required if installing a second 90˚ elbow (Fig. 27).

Always install horizontal venting on a level plane.

Step 6

Zero clearance sleeve is required only for combustible walls.

Step 2

Measure wall thickness and cut zero clearance sleeve parts to proper length (12” [305 mm] max.). Assemble sleeve and attach to firestop with #8 sheetmetal screws (supplied). Install firestop assembly (Fig. 25).

Use the appropriate length of pipe sections—telescopic or fixed—and install. The sections which go through the wall are packaged with the starter kit, and can be cut to suit if necessary.

NOTE: Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn in around fireplace.

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