Installing A Roof Mounted Direct Vent Termination (Pvtk-1); Section 3-2-1: Venting Layout; Roof Mounted Terminations - Montigo L42DF ST Installation & Maintenance Manual

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
10 - 10c).
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.
„

Roof mounted Terminations

The following details are some possible configurations for Roof
mounted terminations.
PVTK1 Termination
PEXT
PEXT-10
Adaptor
Flue
Collar
Figure 10. Top vent, Roof mounted termination with no offset in vent run.
XG0182 -151126
Installation
Figure 10a. Top vent, Roof mounted with 1 offset (1 offset= two 90° bends).
Figure 10b. Top vent, Roof mounted with 2 offsets (1 offset= two 90°
bends).
L42DF-ST* Indoor Gas Fireplace
PVTK1 Termination
PVTK1 Termination
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