Empire Comfort Systems DVL25FP32-1 Installation Instructions And Owner's Manual page 17

VENTING FIREPLACE - TOP (continued)
Below Grade Installation
When it is not possible to meet the required vent terminal clearances
of 12" (305 mm) above grade level, a snorkel kit is recommended.
It allows installation depth down to 7" (178 mm) below grade level.
The 7" (178 mm) is measured from the center of the horizontal vent
pipe as it penetrates through the wall.
Ensure the sidewall venting clearances are observed. If venting
system is installed below ground, we recommend a window
well with adequate and proper drainage to be installed around
the termination area.
76 .2 mm 3" ( )
MINIMUM
PIPE STRAP
635 m
(25 ) "
TYPICAL BASEMENT INSTALLATION
Examples of possible venting systems using one (1) 90° elbow.
Eight (8) feet is listed as minimum vertical vent run with 20 feet of
maximum horizontal vent run. Vertical dimensions are based on
centerline to centerline of pipe. Horizontal dimensions are based
on centerline of pipe to end of termination.
29210-0-0911
COMBUSTIBLE
PROJECTION
457 .2
MINIMUM
304.8 mm (12")
ABOVE GRADE
Figure 18
FIRESTOP AT
CEILING LEVEL
mm 18" ( )
SEE GRAPH FOR PERMISSIBLE "H" AND "V" DIMENSIONS
Examples of possible venting systems using two (2) 90° elbows.
V is listed as minimum vertical dimensions and H1 + H2 is listed
as total of maximum horizontal dimensions. The maximum vertical
and horizontal distances for two (2) 90° elbows as shown in
Figures 17 and 26 is 20 feet (6.1 m).
Attention: Refer to Figure 21 for additional venting requirements.
FIRESTOP AT
CEILING LEVEL
NOTE: H1 AND H2 MUST BE ADDED TOGETHER TO USE CHART
Figure 19
SEE GRAPH FOR PERMISSIBLE "H" AND "V" DIMENSIONS
Figure 20
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