Vermont Casting RDVOD 3369 - Manual (Page 18)

18 18
Radiance Direct Vent/Natural Vent Gas Heater
20004188
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.
ST653
install snorkel
4/20/01 djt
RADIANCE
Waterproof Seal
Around Pipe
Firestop
Window Well
Drain
4” Clearance
Snorkel
Termination
Cap
Wall Screws
and Anchors
ST653
Gravel
Fig. 31 Snorkel kit installation.
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)
ST219
snorkel detail
12/6/99 djt
Recessed Wall
Sheet Metal
Screws and
Bracket
Wall Screws
and Anchors
Waterproof Seal
Around Pipe
ST219
Fig. 30 Use extension brackets to mount snorkel against
recessed wall.
Firestop
Finishing
Collar
7” Pipe
Wall Plate
ST217
install wall terminal
12/6/99 djt
Seal Both Termi-
nal Ends
Caulk Plate Joint with
Weatherproof Sealant ST217
Fig. 29 Install the vent terminal.
11. For CFM only: Install Charcoal Gray Pipe Rings
(#7FSDRG) or Polished Brass Pipe Rings (#7FSDRP)
at pipe joints, if desired.