Montigo H42DF Installation & Maintenance Manual page 16

H*42DF Indoor Gas Fireplace
Section:
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 15.
Fireplace must be converted to Rear Vent configuration
„
prior to running vent, see Figure 9 and 9a.
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 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
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
52"
48"
33"
Figure 15. Rear Vent Venting Graph for wall mounted terminations.
Page 16
Installation
A
C
Unacceptable vent run
within shaded area.
If your installation does not fall
within the venting graph parameters,
please contact a local Montigo
dealer for Power Venting options.
NOTE: 18" MAX. horizontal run
with no vertical lift. N.G. (Natural
Gas) fireplaces ONLY.
6"
Hearth
Figure 15a. Straight run, Rear Vented, wall mounted termination for
H*42DF*, Figure 15. N.G. (Natural Gas) equipped fireplaces ONLY. For
Propane fireplaces, see figure 15b below.
Flex or Rigid
Section
6"
Figure 15b. Rear Vented, wall mounted Multi-elbow termination
installation. Installation for H*42DF* must have a minimum vertical
rise of 52".The vent run must comply with the Venting Graph for
Rear vent, wall mounted terminations, Figure 15.
Note: Images are shown without screens for clarity purposes.
However, your fireplace should not be operated without proper
installation of screens.
PXT Extension
RHS101 Heat
Shield
Termination
18" MAX.
33"
Exterior
Wall
30" Max.
19"
Min.
52" Min.
18"
Max.
33"
XG0148 - 151123