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L38DF-ST See-thru Gas Fireplace
Part No. XG0810
f i r e f e a t u r e
Figure 17b.
Vertical venting with 2 offsets (1 offset= two 90° bends).
Figure 17a
. Vertical venting with 1 offset (1 offset= two 90° bends).
Installation
Vertical Vent Installations
Vertical Installations with a rise greater than 12' can be reduced
from 5/8 to 4/7 venting.
•
minimum 2' (two feet) above the highest point where
vent passes through the roof.
•
minimum 6' (six feet) from a mechanical air inlet
•
minimum 18" (1 1/2 feet) from a parapet wall.
Maximum vent height is 30 feet above fireplace.
Note: Flame characteristics will change if the maximum vent
height is used.
Minimum
clearance to combustible construction around
the vent pipe is 1"
on all sides must be maintained, except on
horizontal venting where the
top
of the pipe must have a clear-
ance of at least 2".
2. offset Vertical Installations
A maximum oftwo offsets
(each offset has two 90° bends)
may
be made if the length of the offsets does not exceed 25% of the
vertical vent height, when measured center to center of piping.
Example:
Typical vent installation.
30' vertical vent
2 - 2' offsets required
25% of 30' = 7-1/2' max. offset allowed
This venting configuration meets requirements.
1. Straight Vertical Installation
Figure 17
. Straight, vertical venting.
PEXT
Solid Sectio
n
PEXT
Solid
Section
