Owner`s manual

Page 9
DV 42 Indoor Gas Fireplace
Installation
Section 3-2: INSTALLING A ROOF MOUNTED DIRECT VENT 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 replace. NOTE: If the
maximum termination height is used, the ame pattern may be aected.
• The vertical termination must be a minimum 2’ higher than where the
termination exits the roong materials; asphalt shingles, cedar shakes, etc.
This distance should be measured from the high side of the roof slope where
the ue ashing intersects the roong 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 osets may be made. Each oset is made of two 90° bends.
• Install a restop 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 ashing and storm collars as shown.
Figure 11. Top vent, Roof mounted termination with no oset in vent run.
Figure 11a. Top vent, Roof mounted with 1 oset (1 oset= two 90° bends).
Figure 11b. Top vent, Roof mounted with 2 osets (1 oset= two 90° bends).
Roof mounted Terminations The following details are some possible congurations
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
3
2’ max
Support plate
& ring
Obstacle
PVTK1
Termination