Vermont Casting BHDR36 Vent Opening Ñ Combustible Wall, Vent Opening Ñ Noncombustible Wall, eg A

HOW TO USE THE VENT GRAPH

1.Determine the height of the centre of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph (Fig. 21), locate the point it intersects with the slanted graph line.

2.From the point of this intersection, draw a vertical line to the bottom of the graph.

3.Select the indicated dimension, and position the fireplace in accordance with same. (See examples Fig. 21).

EXAMPLE A:

If the vertical dimension from the floor of the unit is 11 feet (335cm) the horizontal run to the face of the outer wall must not exceed 14 feet (427cm).

EXAMPLE B:

If the vertical dimension from the floor of the unit is 7 feet (214cm), the horizontal run to the face of the outer wall must not exceed 8-1/2 feet (259cm).

SIDEWALL VENTING GRAPH

(Dimensions in Feet)

30
29
28		TOTHE	VERTICAL
27
26
25
24		CENTREOF	DIMENSION
23
22
21
20
19		THEHORIZONTAL	FROMTHEFLOOR
18
17
16
15
14
13		VENTPIPE	OFTHEUNIT
12	eg: A
11
10
9
8

7	eg: B
6
5
4
3

34 5￿ 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SEE PAGE 15 FOR VENTING	Fig. 21
REQUIREMENTS FOR SNORKELS.
	- 13 -

VENT SIDEWALL INSTALLATION

*IMPORTANT* Minimum clearance between vent pipes and combustible materials is one (1") inch (25 mm) on bottom, sides and top.

Vent Starter Kit 7DVSK, plus Transition Elbow 7DVRT90 must be used in Vertical Sidewall installations. The 4" pipe must be centred inside the 7" pipe coming off the 7DVRT90 transition elbow.

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 non- combustible, cut opening to size. Fig. 22 or 24.

(For combustible walls first frame in opening. Fig. 23).

Vent Opening Ñ

Combustible Wall

(240mm)

9-3/8"

9-3/8" (240mm)

Fig. 22 (framing detail)

Fig. 23

Vent Opening Ñ

Noncombustible Wall

7-1/2" (190mm)

Fig. 24

COMBUSTIBLE WALLS (Fig. 22): Cut a 9-3/8"H x 9-3/8"W (240

mmx 240 mm) hole through the exterior wall and frame as shown (Fig. 23).

NON-COMBUSTIBLE WALLS (Fig. 24): Hole opening must be 7.5" (190 mm) in diameter.