Majestic Appliances 360DVSR How to Use the Vent Graph, Rear Wall Application, Example A, Step

360 DVS Series Direct Vent Fireplaces

How to Use the Vent Graph

The vent chart should be read in conjunction with the following vent installation instructions to determine the relationship of the vertical and horizontal dimensions of the vent system.

1.Determine the height of the center of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph bellow, locate the point intersecting with 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.

Example A:

If vertical dimension from floor of the fireplace is 11’ (3.4 m), horizontal run to the face of outer wall must not exceed 14’ (4.3 m).

Example B:

If vertical dimension from floor of the unit is

7’ (2.14 m), horizontal run to the face of outer wall must not exceed 8¹⁄₂’ (2.6 m).

30
29
28
27
26
25
24																		Vertical dimensionfromflooroftheunit to center of thehorizontalventpipe
9
23
22
21
20
19
18
17
16
15
14
13
12												eg: A
11
10
8
7							eg: B
6
5
4
3
3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	DV Graph

Horizontal dimension from outside of the wall

to the center of the fireplace vent flange

Sidewall vent graph showing the relationship between vertical and

horizontal dimensions for a Direct Vent flue system.

Fig. 16 Sidewall vent graph.

Rear Wall Application

When installed as a rear vent unit this appliance may be vented directly to a termination located on the rear wall

behind the appliance.

•Specific rear vent starter kits must be used in these applications (see ‘venting components’). The appli- ance has been approved for installation flat against a rear wall. (Fig. 17)

•Maximum horizontal distance between the rear of the appliance and the outside face of the rear wall is 20” (508 mm). (Fig. 17)

•Minimum clearances between any combustible ma- terial and the vent pipe sections are:

Top	2” (51 mm)
Sides	1” (25 mm)
Bottom	1” (25 mm)

Max. 20” (508mm)

FP1434

Fig. 17 Rear vent application.

Rear Wall Installation

Step 1

Locate and cut vent opening in the rear wall.

Combustible walls: Cut a rectangular hole measuring 10³⁄₈” H x 9³⁄₈” W (265 x 240 mm) through the exterior wall and frame. Frame in the opening per Figure 18.

Noncombustible walls: Cut a round hole measuring 7¹⁄₂” (190 mm) diameter through the exterior wall and frame. (Fig. 18)

STEP 2

For combustible walls: Measure wall thickness and cut zero clearance sleeve parts to proper length.

Max. length is 12” (305 mm). Assemble sleeve to its maximum opening of 10³⁄₈” x 9³⁄₈” (265 x

240 mm), and attach to firestop with #8 sheetmetal screws (supplied). Install firestop assembly. (Fig. 19)

NOTE:Zero clearance sleeve is required only for com- bustible walls.

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