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P/N XG0207
M40DV-ST See-Thru Gas Fireplace
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 hori-
zontal venting where the
top
of the pipe must have a clearance 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.
Figure 11b. Vertical venting with 2 offsets (1 offset= two
90° bends).
* If reducing to 4"/7" venting see figure 19.
Figure 11a. Vertical venting with 1 offset (1 offset= two
90° bends).
* If reducing to 4"/7" venting see figure 19.
1. Straight Vertical Installation
Figure 10. Straight, vertical venting. When the vent run is not re-
duced use a PEL-90F/F elbow, which is connected directly
to the fireplace flue collar. In this case, the PXT-10 adaptor
is not needed. * If reducing to 4"/7" venting see figure 19.
Installation
Rear Vent
