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Top Vent Venting Runs
Before you install any venting, you must determine whether the venting
run will be acceptable. Unacceptable venting can affect the fireplace's
combustion.
the maximum vertical vent run for a Top Vented unit is 32 feet
The Venting Graph
Measure the vertical height from the fireplace hearth to the centre of the
termination and the horizontal run from the from the fireplace flue collar to
the wall flange of the termination. Plot on the Venting Graph (Fig. 9) 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 48" 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.
Figure 9. Venting Graph.
Part No. XG0130
Installation
Available Top Vent Components
The following venting components are available for the H34D Top
Vent:
A - Termination
B - Stucco Kits
C - Flex sections
D - Rigid sections
E - Elbows
NOTES:
H34D Gas Fireplace
MTO-3 (3" length)
MTO-3F (3" length)
MSR (stucco frame)
MOSR (stucco can)
BSR (brick can)
MFL-1 (12" section)
MFL-2 (24" section)
MFL-3 (36" section)
MFL-4 (48" section)
MEXT-1 (12" m/f section)
MEXT-2 (24" m/f section)
MEXT-3 (36" m/f section)
MEXT-4 (48" m/f section)
MEL-90MM (m/m 90° elbow)
MEL-90FF (f/f 90° elbow)
MEL-90FM (f/m 90° elbow)
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
graph (see Figure 9).
Page 7
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