85-03-01108
FV46
Page
62
FV46 Master Venting Chart
1.
12” minimum vertical pipe required to be connected directly to this fireplace’s flue starter collar.
2.
18” maximum horizontal run allowed with the minimum 12” vertical rise.
3.
Maximum Vertical Run allowed is 50 feet.
4.
Maximum Vent System length allowed is 54 feet.
5.
In
Zone “A”
, 20 feet maximum horizontal run allowed with a 4 feet starter section. If the starter vertical section is less than 4
feet, use the chart and reduce 3 feet for every 90
0
-elbow installed after the first 90
0
elbow.
6.
In
Zone “B”
, 20 feet maximum horizontal run allowed only if the first vertical section connected directly to the top of this
fireplace is 4 feet to 30 feet long. Three 90
0
elbows may be installed anywhere within the run. No reduction in horizontal is
required for the 90
0
elbows used.
7.
In
Zone “B”
, Four 90
0
elbows may be installed anywhere within the run if terminated vertically. No reduction in horizontal is
required for the 90
0
elbows used if the initial vertical section is at least 4 feet.
High Altitude Installation Information
Prior to installing at altitudes higher than 7500, please contact the Mendota technical service department for specific venting
requirements and venting restrictions.
V min
H max
12 in.
1’-6”
18 in.
1’-4”
24 in.
6’-8”
36 in.
13’-4”
4 ft. - 30 ft.
20'
31ft. - 50 ft.
50’- V
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