Below Grade Installation; Vertical Through-The-Roof Applications & Installation - Temco 36CDVRRN Installation Instructions And Homeowner's Manual

CDV Series Direct Vent Gas Fireplace
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 #7TDVSNORK is required. It allows
installation depth of down to 7" (178 mm) below grade
level. The 7" is measured from the center of the hori-
zontal 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.
The maximum horizontal run with 24"
vertical rise is 36" (914 mm) from the
back of the fireplace to the face of the
exterior wall. See vent graph (Page 12) for
extended horizontal run if the vertical rise
exceeds 24" (610 mm).
1. Establish vent hole through the wall. (Fig. 13)
2. Remove soil to a depth of approximately 16"
(406mm) below base of snorkel. Install window
well (not supplied). Refill hole with 12" (305 mm) of
coarse gravel leaving a clearance of approximately
4" (102 mm) below snorkel. (Fig. 30)
3. Install vent system. See Page 12, Steps 2 through 5.
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 into the vent pipe and secure to the wall.
7. Level the soil to maintain a 4" (102 mm) clearance
below snorkel. (Fig. 30)
Firestop
7" Pipe
24" (610mm)
Minimum*
Fig. 30 Below grade installation.
BG400

Below grade installation

18
2/10/99 djt
10/19/99 added standoffs
7TDVSNORK
(Snorkel)
4" (102mm)
Clearance
Min.
Window
Well
Gravel
Drain
Foundation Wall
*A minimum of 24" (608mm)
vertical pipe must be installed
when using 7TDVSNORK Kit.
BG400
Do not back fill around snorkel. A
clearance of at least 4" (102 mm) must be
maintained between the snorkel and the
soil.
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)
Foundation Recess
Recess Brackets
Watertight Seal
Around Pipe
Fig. 31 Snorkel installation, recessed foundation.
BG401
Vertical Through-the-Roof Applications
Snorkel
This Gas Fireplace has been approved for:
2/10/99 djt
1. Vertical installations up to 40' (12 m) in height. Up to
10' (3 m) horizontal vent run can be installed within
the vent system using a maximum of three 90°
elbows.
Minimum
8' (2.4 m) /
Maximum
40' (12 m) Vertical
Rise
Fig. 32 Support straps for horizontal runs.
CFM148
2. Up to two 45° elbows may be used within the
horizontal run. For each 45° elbow used on the
horizontal level the maximum horizontal length must
be reduced by 18" (457 mm).
Snorkel
Wall Screws
Sheet Metal
Screws
BG401
Maximum
10'
(3 m)
Pipe Straps Every
3' (914 mm)
CFM148
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