Montigo L38DF-ST - Manual (Page 10)

L38DF-ST* Indoor Gas Fireplace
Page 10 XG0810 - 150204.2
Installation
Figure 9. Top vent, Roof mounted termination with no offset in vent
run.
Roof mounted Terminations
The following details are some possible configurations for Roof
mounted terminations.
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.
PVTK1 Termination
PEXT
PEXT-10
Adaptor
Flue
Collar
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).
PVTK1 Termination
PVTK1 Termination