Section 3-3-1: Venting Layout - Montigo L38DF-ST series Installation & Maintenance Manual

Section 3-3-1:
VENTING LAYOUT: Wall mounted termination.
Selection of components and details of venting layout should
adhere to the following guidelines:
Vent terminations must not be recessed in walls or siding.

All through-the–wall terminations within 3' of the fireplace must

have a Montigo Heat Shield (RHS101) installed. See Section
3-3-3.
All through-the-wall terminations beyond 3' of the fireplace must

have a Montigo Heat Shield (RHS8) installed. See Section 3-3-3.
Once the proposed venting layout has been determined refer to

Figure 14 to ensure the layout is acceptable.
Notes Wall Mounted Terminations: Top Vent
All measurements for vertical or horizontal runs are measured

from center of the vent pipe.
Venting runs must fall within the limits set by the venting graph,

see Figure 14.
Wall mounted Terminations
The following details are some possible configurations for Wall
mounted terminations. See below.
The Venting Graph: L38DF-ST*
Measure the vertical height from the fireplace hearth to the centre of the
termination and the horizontal run from the fireplace flue collar to the wall
flange of the termination. Plot on the Venting Graph Figure 14 with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal
run to the wall flange of the vent termination is 180", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 60" and the horizontal
run to the wall flange of the vent termination is 72", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 60" and
the horizontal run to the wall flange of the vent termination is 144",
this would NOT be an acceptable installation.
WARNING:
An inspection of the explosion relief flappers and door
MUST be made prior to lighting the fireplace. A faulty
seal on the door gasket and/or explosion ports will
result in products of combustion leaking into the living
space and may result in carbon monoxide poisoning.
Part No. XG0810 - 081310-1
Installation
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
Figure 14. L38DF-ST* Top Vent Venting Graph for wall mounted
terminations.
Figure 16. Top Vented, wall mounted installation with1 elbow (1 one
90° bend). The vent run must comply with Venting Graph
for Top vent, wall mounted terminations, Figure 14.
Figure 16a. Top Vented, wall mounted Multi-elbow installation. See
Venting Graph for Top vent, wall mounted terminations,
Figure 14.
L38DF-ST* Indoor Gas Fireplace
Acceptable vent run
within non-shaded area.
C
B
42"
36" NG & LP
36" max.
15'foot Max.
30"min
Solid Section
Flex Section
Hearth
A
Unacceptable vent run
within shaded area.
RHS8
42
Min.
RHS8 Heat
Shield
Termination
8'foot
Max.
Exterior
Wall
Page 11