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DV 42 Indoor Gas Fireplace
Installation
Section 3-2:
INSTALLING A ROOF MOUNTED
TERMINATION (PVTK-1)
This section applies to installations where the direct vent termination will be
roof mounted.
Section 3-2-1:
VENTING LAYOUT
Selection of components and details of venting lay out should adhere to the
following:
•
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
two 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
