Section 3-2: Installing A Roof Mounted Termination; Section 3-2-1: Venting Layout; Roof Mounted Terminations; Standard Top Vent (No Elbows Or Offsets) - Montigo H34DL Installation & Maintenance Manual

H-Series DL Indoor Gas Fireplace
Section 3-2:
INSTALLING A ROOF MOUNTED DIRECT VENT
TERMINATION (MVTK-1SS / PVTK-1SS)
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 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 8 to 8c).
Termination location must be a minimum 6' from a mechanical
„
air inlet.
Termination location must be a minimum 18" from a parapet wall.
„
For a more detailed diagram of allowed termination locations,
„
see Appendix A.
A maximum of two offsets (each offset is made up of 2-90°
„
bends) may be made.
Firestops must be installed as required by national & local codes.
„
Ensure all runs are supported with a minimum of 3 supports
„
per 10' of venting.
Install all roof flashing and storm collars as shown.
„

Roof mounted Terminations

The following details are some possible configurations for Roof
mounted terminations. See below.
MVTK-1 / PVTK-1 PVTK1
Termination
Termination
32' max.
Figure 8. Top vent, Roof mounted termination with no offset in vent run.
Page 8
Installation
32' max.
Figure 8a. Top vent, Roof mounted with 1 offset (1 offset= two 90° bends).
32' max
2' min.
Support ring
Support plate
Firestop
Figure 8b. Top vent, Roof mounted with 2 offsets (1 offset= two 90° bends).
PVTK1
MVTK-1 / PVTK-1
Termination
Termination
Obstacle
MVTK-1 / PVTK-1
PVTK1
Termination
Termination
Obstacle
2' min.
Support ring
Support plate
Firestop
2' min.
Support straps or
support plate & ring
Firestop
Support plate
& ring
Firestop
2'
Firestop
XG0140 - 120611.1