Vermont Casting RDVOD 3399 Vent Termination Below Grade, Vertical Through the Roof Vent Assembly

Radiance Direct Vent/Natural Vent Gas Heater

11.For CFM only: Install Charcoal Gray Pipe Rings (#7FSDRG) or Polished Brass Pipe Rings (#7FSDRP) at pipe joints, if desired.

Seal Both Termi- nal Ends

Caulk Plate Joint with	ST217
Weatherproof Sealant

Recessed Wall

Sheet Metal

Screws and

Bracket

Wall Screws

and Anchors

Waterproof Seal Around Pipe

ST219

Firestop

Finishing

Collar

7” Pipe

Wall Plate

Fig. 29 Install the vent terminal.

Vent Termination Below Grade

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. 31)

NOTE: Be sure to maintain side wall clearances and vent run restrictions. Refer to Page 6, Figures 3, 4, 5, 6.

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” (100mm) below the snorkel. (Fig. 31)

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 brack- ets (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 protruding wall face. (Fig. 30)

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

	Wall Screws
	and Anchors	Waterproof Seal
Snorkel		Around Pipe
Termination		Firestop
Cap
	4” Clearance
	Gravel
	Drain
	Window Well
		RADIANCE
		ST653
Fig. 31	Snorkel kit installation.

Vertical (Through the Roof)

Vent Assembly

Note that all vertically terminated installations must, where specified, use the restrictor plate to comply with Vertical Termination Window (Page 7, Figure 8), included in the hardware bag. The plate must be installed within the firebox inner flue collar to insure a proper air/fuel ratio is maintained in an appli- ance vented through the roof.

1818 20004188