19
CDVZ Series Direct Vent Gas Fireplace
20014621
STEP 6
Support the horizontal pipes every 36” (914 mm) with
metal pipe straps. Make sure that the horizontal vent pipe
is installed on a level horizontal plane.
STEP 7
Re-check the fireplace to make sure that it is levelled,
properly positioned, and nailed or screwed to the floor.
If applied, the fireplaces adjustable frame drywall strips
(nailing flanges) should be fastened. Refer to “Framing &
Finishing”.
CFM137
Rear Vent length
2/26/01 sta
X
High
Temperature Sealant
CFM137
Fig. 32
Apply high temperature sealant.
CFM138
4", 7" collar
2/26/01 sta
X
X
CFM138
Fig. 33
Horizontal length requirement.
Below Grade Installation
When it is not possible to meet the required vent terminal
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 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.
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 13) for extended horizontal
run if the vertical rise exceeds 24” (610
mm).
1. Establish vent hole through the wall. (Fig. 17)
2. Remove soil to a depth of approximately 16” (406 mm)
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. 34)
3. Install vent system. See Page 14, 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 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. 34)
BG400
Below grade installation
2/10/99 djt
10/19/99 added standoffs
24" (610mm)
Minimum*
Firestop
7” Pipe
7TDVSNORK
(Snorkel)
4” (102mm)
Clearance
Min.
Window
Well
Gravel
Drain
Foundation Wall
BG400
Fig. 34
Below grade installation.
*A minimum of 24” (608mm) ver-
tical pipe must be installed when
using 7TDVSNORK Kit.
