Montigo H38DF-PFC Installation, Operation & Maintenance Manual page 13

Notes Wall Mounted Terminations: Rear Vent
All dimension lengths for vertical or horizontal runs are measured
„
from center of the vent pipe.
Venting runs must fall within the limits set by the venting graphs,
„
see Figure 17.
Fireplace must be converted to Rear Vent configuration prior to
„
running vent, see Figure 7 and 8.
The Venting Graph
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 17 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: (Acceptable Installation)
If the vertical dimension from the hearth is 66" and the horizontal
run to the wall flange of the vent termination is 66", this would 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
48"Rigid
53" Flex
42"
33"
12"
Figure 17. Rear Vent Venting Graph for wall mounted terminations.
Part No. XG0816 - 100210
Installation
A
Unacceptable vent run
C
within shaded area.
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
H*38DF-PFC* Indoor Gas Fireplace
Figure 17a. Straight run, Rear Vented, wall mounted termination for
H*38PFN*, Figure 17.
Flex or Rigid
Section
Figure 17b. Rear Vented, wall mounted Multi-elbow termination
installation. Installation for H*38PF* must have a minimum
vertical rise of 48" with Rigid vent pipe, and 53"Min with
Flex.The vent run must comply with the Venting Graph for
Rear vent, wall mounted terminations, Figure 17.
12"
NOTE: 12" MAX.
MAX.
horizontal run with
no vertical lift.
Exterior
ll
Wa
RHS8 Heat
Shield
Termination
33"
Hearth
42" Max.
20"Min. Flex
15"Min. Rigid
53" Min. Flex
48" Min.Rigid
12"
Max.
33"
Hearth
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