Section 4: Installing The Vertical Power Vent; Section 4-1: Installing A Roof Mounted Vertical Exterior Power Vent; Section 4-1-1: Venting Layout; Multi-Elbow Installations - Montigo R620-ST Indoor Installation & Maintenance Manual

R520-ST & R620-ST Power Vent Indoor Gas Fireplace
Section4:InstallingtheVerticalPowerVent
Montigo supplies a variety of power venting options. The location of
the power vent should be selected and laid out to provide the shortest
possible run to an external wall or through the roof.
Section 4-1: Installing a Roof Mounted Vertical
Exterior Power Vent
This section applies to installations where the shortest possible vent
run is through the roof. Refer to Appendix A -PowerVentlocations,
to ensure the planned Power vent location is acceptable. Once the
vent location has been established, please refer to the appropriate
section below for installation details.

Section 4-1-1: Venting Layout

Selection of components and details of venting lay out should adhere
to the following guidelines:
• Ensure there is a minimum run of 2' of straight pipe before the
power vent.
• Ensure the maximum vent run does not exceed 80'.
• Ensure the number of 90° elbows does not exceed 6.
• Ensure the number of 45° elbows does not exceed 12.
Max V
120' feet
Figure 1 Sec.4 Typical straight Venting Installations
Figure 3. Typical straight Venting Installations.
Note: Images are shown without screens for clarity purposes.
However, your fireplace should not be operated without proper
installation of screens.
Page 12
Installation

Multi-Elbow Installations

Multi-elbow installations are possible up to a maximum of six 90°
elbows.
Max V1 + H1 + V2 + H2 + V3
100' feet
Max Elbows
Figure 2 Sec.4 Multi-elbow Venting Installations.
N/A

Downward Vertical Venting

Note: The downward vent run must not exceed 6' of vent run.
Elbow 2
V1
Max V1 + H1 + D + H2 + V3
40' feet
Figure 3 Sec.4 Downward Venting Installations.
Elbow 4
V2
Elbow 2
Elbow 3
H1
V1
Elbow 1
Elbow 3
H1
D = 6' foot
MAX
Elbow 1
Elbow 4
,
V3
Elbow 5
H2
Max Elbows
six 90
V3
Elbow
H2
Max Elbows
six 90
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