Owner`s manual

28365-2-0811 Page 19
Figure 23
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
Figure 24 is 20 feet (6.1 m).
Attention: Refer to Figure 21 for additional venting requirements.
Figure 24
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.



the termination area.
TYPICAL BASEMENT INSTALLATION
Figure 22
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.
VENTING FIREPLACE - TOP (continued)
SEE GRAPH FOR PERMISSIBLE “H” AND “V” DIMENSIONS
FIRESTOP AT
CEILING LEVEL
FIRESTOP AT
CEILING LEVEL
SEE GRAPH FOR PERMISSIBLE “H” AND “V” DIMENSIONS
NOTE: H1 AND H2 MUST BE ADDED TOGETHER TO USE CHART