Montigo H38DF PFC - Manual (Page 10)

Page 10 XG0816 - 150204.1
H*38DF PFC Peninsula Gas Fireplace
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 9 - 9c).
„ For a detailed diagram of allowed termination locations, see
Appendix A�
„ Termination location must be a minimum 6’ from a mechanical
air inlet.
„ A maximum of two offsets (each offset is made up of 2-90°
bends) may be made for vertical vent runs.
„ Firestops must be installed as required by National & local codes.
„ Ensure all horizontal runs are supported with a minimum of 3
supports per 10’ of venting.
„ Install all roof flashing and storm collars as shown.
Figure 9. Top vent, Roof mounted termination with no offset in vent run.
Figure 9a� Top vent, Roof mounted with 1 offset (1 offset= two 90° bends).
Figure 9b� 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.
Support ring
Support plate
Firestop
32’ max.
2’ min.
PVTK1
Termination
Support straps or
support plate & ring
2’ min.
Firestop
Firestop
Firestop
32’ max
Support plate
& ring
Obstacle
PVTK1
Termination
Support ring
Support plate
Firestop
32’ max.
2’ min.
Obstacle
PVTK1
Termination