Rear Vent, Wall Mounted Termination Graph; Standard Rear Vent, (No Elbows Or Offsets); Rear Vent, Wall Mounted Termination (Multi Elbow) - Montigo L38DF Installation & Maintenance Manual

notes Wall Mounted Terminations: Rear Vent
■ All dimension lengths for vertical or horizontal runs are measured
from center of the vent pipe.
■ Vent runs must fall within the limits set by the venting graphs,
see Figure 15.
■ Fireplace must be converted to Rear Vent configuration prior to
running vent, see Figure 9 and 9a.
The Venting graph: L38DF*
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 15 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 120" and the horizontal
run to the wall flange of the vent termination is 138", this would be an
acceptable installation.
Example B: (Unacceptable Installation)
If the vertical dimension from the hearth is 48" and the horizontal run to
the wall flange of the vent termination is 96", this would be would not
be an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 72" and the
horizontal run to the wall flange of the vent termination is 120", this
would not be an acceptable installation.
Acceptable vent run
within non-shaded area.
B
46"
42"
21 3/4"
12"
Natural Gas only
Figure 15. Rear Vent Venting Graph for wall mounted terminations.
XG0180 - 053111.1
Installation
A
C
Unacceptable vent run
within shaded area.
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
nOTE:
12" MAX. horizontal
run with no vertical lift.
Hearth
Figure 15a. Straight run, Rear Vented, wall mounted termination for
L38DF*, Note: Straight through the wall rear vent available for
Natural Gas only.
Flex or Rigid
Section
12"
Max.
Figure 15b. Rear Vented, wall mounted Multi-elbow termination
installation. The vent run must comply with the Venting Graph for Rear
vent, wall mounted terminations, Figure 15.
WARnIng
An inspection of the explosion relief flappers and door MUST be made prior to
lighting the fireplace. Faulty seal on the door gasket and/or explosion ports will
result in combustion products leaking into the living space and may result in
carbon monoxide poisoning.
L38DF* Indoor Gas Fireplace
PXT Extension
RHS101 Heat
Shield
Termination
12" MAX.
21 3/4"
Exterior
Wall
30" Max.
24 1/4"
Min.
46" Min.
21 3/4"
Page 15