Vermont Casting 36CDVTRN, 36CDVRRN 36CDVT Vertical Venting, Typical straight-up installation

CDV Series Direct Vent Gas Fireplace

			Vent
	Roof		Termination
		2’ Min.	Storm Collar
			Roof Flash-
		Roof Support	ing
50’		Attic Insulation
		Shield
(15 m)
		Attic
		Insulation
		Joists
			Joists

FP1022

Fig. 36 Typical straight-up installation.

Min.

2' (610 mm)

FP1185

Fig. 37 Minimum termination to roof clearance.

9.Install storm collar and seal around the pipe.

10.Add additional vent lengths for proper height. (Fig 37)

11.Apply high temperature sealant to 4” and 7” collars of vertical vent termination and install.

36CDVT Vertical Venting

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 (Fig. 38), locate the point intersecting 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.

Example A:

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

Example B:

If the vertical dimension from the floor of the unit is 7’ (2.14 m), the horizontal run to the face of the outer wall must not exceed 8¹⁄₂’ (2.6 m).

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

Horizontal dimension from the outside face 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. 38 Sidewall venting graph. (Dimensions in feet)

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