Montigo HW38DF Installation & Maintenance Manual page 16

H*38DF Gas Fireplace
Notes Wall Mounted Terminations: REAR VENT
All dimension lengths for vertical or horizontal runs are measured
„
from centre 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 8 and 8a.
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
48"
28 3/4"
18"
Figure 15. Rear Vent Venting Graph for wall mounted terminations.
Page 16
Installation
A
C
Unacceptable vent run
52"
within shaded area.
If your installation does not fall
within the venting graph parame-
ters, please contact a local Montigo
Dealer for Power Venting options.
NOTE:
18" MAX. horizontal
run with no vertical lift.
Hearth
Figure 16. Straight run, Rear Vented, wall mounted termination for H*38DF*,
Figure 15.
Flex or Rigid
Section
Figure 16a. H*38DF* 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.
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.
28 3/4"
Exterior
Wall
30" Max.
23 1/4"
Min.
52" Min.
18"
Max.
28 3/4"
XG0147 - 150204