20
CDVZ Series Direct Vent Gas Fireplace
20014621
Do not back fill around snorkel. A clearance
of at least 4” (102 mm) must be maintained
between the snorkel and the soil.
BG401
Snorkel
2/10/99 djt
Foundation Recess
Snorkel
Wall Screws
Recess Brackets
Watertight Seal
Around Pipe
Sheet Metal
Screws
BG401
Fig. 35
Snorkel installation, recessed foundation.
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. 35)
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
1. Vertical installations up to 50’ (15 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.
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).
CFM148
Maximum
10’
(3 m)
Minimum
8’ (2.4 m) /
Maximum
50’ (15 m) Vertical
Rise
CFM148
Pipe Straps Every 3’
(914 mm)
Fig. 36
Support straps for horizontal runs.
Example: Maximum horizontal length
0 x 45° elbows = 10’ (3 m)
1 x 45° elbows = 8
¹⁄₂
’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)
3. A minimum of an 8’ vertical rise.
4. Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8’ (2.4 m) of vent
pipe can be used between elbows. (Fig. 37)
5. 7DVCS must be used to support offsets. (Fig. 36) This
application will require that you first determine the roof
pitch and use the appropriate 7DVSKV (A, B or F).
(Refer to Venting Components List, Page 27)
FP1021
Typical vertical
through the roof
application
3/26/00 djt
Max.
8’
(2.4 m)
45°
Max.
8’
(2.4 m)
45°
50’
(15 m)
Typical Ceil-
ing Support
Application
Typical Roof
Support Ap-
plication
FP1021
Typical Offset Installation
Fig. 37
Typical vertical roof applications.
Vertical Through-the-Roof Installation
1. Locate your fireplace.
2. Plumb to center of the (4”) flue collar from ceiling above
and mark position.
3. Cut opening equal to 9
³⁄₈
” x 9
³⁄₈
” (240 x 240 mm). 10
³⁄₈
”
x 9
³⁄₈
” (264 x 240 mm) when using 7TCRVT1320.
4. Proceed to plumb for additional openings through the
roof. In all cases, the opening must provide a minimum
of 1 inch clearance to the vent pipe, i.e., the hole must
be at least 9
³⁄₈
” x 9
³⁄₈
” (240 x 240 mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield
#7DVAIS into position and secure. (Fig. 38)
7. Install roof support (Fig. 39) and roof flashing making
sure upper flange is below the shingles. (Fig. 40)
