Vermont Casting SDDVT manual Vent Termination Below Grade, Vertical Through the Roof Vent Assembly

Vent Termination Below Grade

Install Snorkel Kit #7FSDVSKS when it is not possible to meet the required vent termination clearances of 12” (305 mm) above grade level. The snorkel kit will allow installation depth of down to 7” (178 mm) 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. 29)

Wall Screws	Waterproof Seal
and Anchors
	Around PIpe
Snorkel
	Firestop
Termination
Cap

Drain

Window Well

ST218a

Fig. 29 Snorkel kit installation.

NOTE: Be sure to maintain side wall clearances and vent run restrictions. Refer to Figures 5, 6, 7, and 8.

1.Establish the vent hole through the wall.

2.Remove soil to a depth of approximately 16” (400mm) below the base of the snorkel. Install a window 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. 33)

3.Install the vent system as described on Pages 15-18.

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.

If the foundation is recessed, use extension brackets (not supplied) to fasten the lower portion of the snor- kel. 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 protruding wall face. (Fig. 30)

Stardance Direct Vent/Natural Vent Gas Heater

Recessed Wall

	Firestop
Sheet Metal	Finishing Collar
Screws and
Bracket
Wall Screws and
Anchor
Waterproof Seal
Around Pipe	7” Pipe

Wall Plate

ST219

Fig. 30 Use extension brackets to mount snorkel against recessed wall.

Vertical (Through the Roof)

Vent Assembly

Note that all vertically terminated installations must include the restrictor plate included with the stove. Refer to Page 9, Figure 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 Pages 9 and 11, Figures 8 and 11.

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” (240 x 240mm)

DuraVent System: 10” x 10” (254 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” (25 mm) 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. 31) 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. 32)

8.Install appropriate pipe sections until the vent run reaches above the flashing. The enlarged ends of the vent sections always face downward.

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