Temco Tool 39RDVDSN - Manual (Page 18)

18
RDVDSN Series Direct Vent Gas Fireplace
20007894
If the foundation is
recessed, use recess
brackets (not supplied)
for securing lower
portion of the snorkel.
Fasten brackets to
wall first, then secure
to snorkel with self
drilling #8 x 1/2 sheet
metal screws. It will be
necessary to extend
vent pipes out as far
as protruding wall
face. (Fig. 31)
BG401
Snorkel
2/10/99 djt
Snorkel
Wall Screws
Foundation
Recess
Water-
tight Seal
Around
Pipe
Sheet Metal
Screws
BG401
Recess
Brackets
Fig. 31 Snorkel installation, re-
cessed foundation.
Step 4
Install the 4” (102 mm) flex vent pipe to the termination
cap collar as described on Page 11.
Step 5
Slide the 7” (178 mm) flex vent pipe over the 4” flex
vent pipe and secure the 7” collar as described on Page
11.
Step 6
Be sure to follow the 1” (25 mm) rise in a 24” (610 mm)
horizontal run rule. Trim off excess vent material, then
install the 4” flex to the flue collar and the 7” flex to the
appliance collar. Secure venting with band clamps pro-
vided. Refer to Page 11, Figure 8.
Below Grade Installations
When it is not possible to meet the required vent ter-
minal clearances of 12” (305 mm) above grade level a
snorkel vent kit is recommended. It allows installation
depth of down to 7” (178 mm) below grade level. The
7” is measured from the center of the horizontal vent
pipe as it penetrates through the wall.
If venting system is installed below
ground, we recommend a window well with
adequate and proper drainage.
Ensure sidewall venting clearances are observed.
If installing a snorkel a minimum 24” (610 mm) vertical
rise is necessary. The maximum horizontal run with
the 24” (610 mm) vertical pipe is 36” (914 mm). This
measurement is taken from the collar of the fireplace
(or transition elbow) to the face of the exterior wall.
Refer to the Sidewall Vent Graph for extended
horizontal run if the vertical rise exceeds 24” (610 mm).
1. Establish vent hole through the wall. (Page 16, Fig.
22)
2. Remove soil to a depth of approximately 16” (406
mm) below base of snorkel. Install drain pipe. Install
window well (not supplied). Refill hole with 12” (305
mm) of coarse gravel leaving a clearance of approxi-
mately 4” (102 mm) below snorkel. (Fig. 30)
3. Install vent system.
4. Ensure a watertight seal is made around the vent
pipe coming through the wall.
5. Apply high temperature sealant caulking (supplied)
around the 4” and 7 “ snorkel collars.
6. Slide the snorkel into the vent pipes and secure to
the wall.
7. Level the soil to maintain a 4” (102 mm) clearance
below snorkel. (Fig. 30)
Do not back fill around snorkel. A clear-
ance of at least 4” (102 mm) must be main-
tained between snorkel and the soil.
BG400
Below grade installation
2/10/99 djt
10/19/99 added standoffs
24" (610mm)
Minimum*
Firestop
7” Pipe
7TDVSNORK
(Snorkel)
4” (102 mm)
Clearance
Min.
Window
Well
Gravel
Drain
BG400
Fig. 30 Below grade installation.
Zero Clearance Sleeve
(if required)
*A minimum of 24” (610 mm)
vertical pipe must be installed
when using the 7TDVSNORK
Kit.
Foundation Wall