Vent Termination Below Grade

Dutchwest Direct Vent / Natural Vent Gas Heater

Install Snorkel Kit #7FSDVSKS when it is not possible to meet the required vent termination clearances of 12” (305mm) above grade level. The snorkel kit will allow installation depth of down to 7” (178mm) below grade level. The seven inches is measured from the center of the horizontal vent pipe as it penetrates the wall. If the venting system is installed below grade, a window well must be installed with adequate and proper drainage. (Fig. 28)

NOTE: Be sure to maintain side wall clearances and vent run restrictions. Refer to Figures 3, 4, 7, and 8.

1.	Establish the vent hole through the wall.
2.	Remove soil to a depth of approximately 16” (406
	mm) below the base of the snorkel. Install a window

Recessed Wall

Sheet Metal

Screws and

Bracket

Wall Screws

and Anchors

Waterproof

Seal Around

Pipe

Firestop

Finishing

Collar

7” Pipe

Wall Plate

ST219

	well (not supplied). Reﬁll the hole with 12” (305mm)
	of coarse gravel and maintain a clearance of at least
	4” (102 mm) below the snorkel. (Fig. 28)
3.	Install the vent system as described on Pages 14-
	17.
4.	Be sure to make a watertight joint around the vent
	pipe joint at the inside and outside wall joints.
5.	Apply high temperature sealant around the inner
	and outer snorkel collars. Join the pipes and fasten
	the snorkel termination to the wall with the screws
	provided.
6.	Level the soil to maintain a 4” clearance below the
	snorkel.

	Waterproof Seal
Snorkel	Around Pipe
Termination	Firestop
Cap
4” Clearance
Gravel
Drain
Window
Well
	ST765

Fig. 28 Snorkel kit installation.

If the foundation is recessed, use extension brackets (not supplied) to fasten the lower portion of the snorkel. Fasten the brackets to the wall ﬁrst, and then fasten to the snorkel with self-tapping #8 x 1/2” sheet metal screws. Extend the vent pipes out as far as the protrud- ing wall face. (Fig. 29)

Fig. 29 Use extension brackets to mount snorkel against recessed wall.

Vertical (Through the Roof)

Vent Assembly

Note that all vertically terminated installations must in- clude the restrictor plate included with the stove. Refer to Figure 8, Page 8.

Make certain the vent system conforms to all other requirements for vertical termination as speciﬁed on Page 8.

This installation will require you to ﬁrst determine the roof pitch and use the appropriate vent components. Refer to Figures 8 and 9 on Pages 8 and 10.

1.Locate the ﬁnal position of the stove, observing all clearances for both the vent and the stove.

2.Plumb to the center of the inner (4”) ﬂue collar from the ceiling above, and mark that location.

3.Cut the opening:

CFM System: 9³⁄₈” x 9³⁄₈” (240mm x 240mm)

DuraVent System: 10” x 10” (254mm x 254mm)

4.Plumb any additional opening through the roof or other construction that may be needed. In all cases, the opening must provide a minimum of 1” (25mm) clearance to the vent pipe.

5.Place the stove in its ﬁnal position.

6.Install ﬁrestop(s) #7DVFS and Attic Insulation Shield #7DVAIS as needed. (Fig. 30) If there is a room above ceiling level, a ﬁrestop must be installed on both the bottom and top sides of the ceiling joists.

If an attic is above ceiling level, an attic insulation shield must be installed.

7.Install the appropriate roof support and ﬂashing, making certain that the upper ﬂange of the ﬂashing base is below the shingles. (Fig. 31)

30001935

2466, 2465 specifications

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