L52DF*ST Indoor Gas Fireplace
Page 9
XG0811 - 151126
Section 3: Venting
Montigo supplies a variety of direct venting and termination
options. The direct vent termination location MUST be selected
such that it is the highest point in the venting assembly. It
should also be selected such that it provides the shortest vent
run possible. Should it be impossible to ensure that the termina-
tion is the highest point or should it be impossible to meet the
venting guidelines laid out below please contact your Montigo
dealer to discuss power venting options.
NOTES FOR PLANNING VENTING:
Venting can terminate through the roof or through an
exterior wall.
Refer to Appendix A - Termination Locations to ensure the
planned termination location is acceptable.
Once the termination location has been established, refer
to the appropriate section for installation details
All fireplaces shipped from the factory are Top vent.
Silicone application is NOT required when joining Mon-
tigo vent pipes and components.
Figure 6. 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.
Figure 6a. Top vent, Roof mounted with 1 offset
(1 offset= two 90° bends).
PVTK1 Termination
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 7 to 7b).
Termination location must be a minimum 6’ from a me-
chanical air inlet.
For a more detailed diagram of allowed termination loca-
tions, see Appendix A.
A maximum of two offsets (each offset is made up of two
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
Note: Images are shown without screens for clarity purposes.
However, your fireplace should not be operated without proper
installation of screens.
Installation
