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L38DF* Indoor Gas Fireplace
XG0180 - 053111
Installation
Section 3-2:
INSTALLING A ROOF MOUNTED
DIRECT VENT TERMINATION (PVTK-1)
This section applies to installations where the direct vent termi-
nation will be roof mounted.
Section 3-2-1:
VENTING LAYOUT
Selection of components and details of venting lay out should
adhere to the following guidelines:
The maximum termination point is 32’ above the fireplace (NOTE:
if the maximum termination height is used, the flame pattern
may be affected).
The Vertical termination must be a minimum 2’ higher than where
the termination exits the roofing materials, (asphalt shingles,
cedar shakes, etc). This distance should be measured from the
high side of the roof slope where the flue flashing intersects the
roofing materials. (see
Figures 11 to 11c
*).
Termination location must be a minimum 6’ from a mechanical
air inlet.
Termination location must be a minimum 18” from a parapet wall.
A maximum of two offsets (each offset is made up of 2-90°
bends) may be made.
Install a firestop at any location where venting passes through
combustible materials and construction.
Utilize support straps, or support plates, and rings (as required)
to meet acceptable building practices.
Install all roof flashing and storm collars as shown.
Figure 11
.
Top vent, Roof mounted
termination with no offset in vent run.
Figure 11a.
Top vent, Roof mounted
with 1 offset (1 offset= two
90°
bends).
Figure 11b.
Top vent, Roof mounted
with 2 offsets (1 offset= two
90°
bends).
Roof mounted Terminations
The following details are some possible configurations for Roof mounted
terminations. See below.
Support ring
Support plate
Firestop
32’ max.
2’ min.
PVTK1
Termination
Support ring
Support plate
Firestop
32’ max.
2’ min.
Obstacle
PVTK1
Termination
Support straps
or
support plate & ring
2’ min.
Firestop
Firestop
2’
Firestop
32’ max
Support plate
& ring
Obstacle
PVTK1
Termination
