Mendota FV41 - MASTER FLUE VENTING REQUIREMENTS CHART

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FOUR 90° ELBOWS MAX IF VERTICALLY TERMINATED IN ZONE "B".
THREE 90° ELBOWS MAX IF HORIZONTALLY TERMINATED IN ZONE "B".
NOTE: IN ZONE "B", MAXIMUM HORIZONTAL RUN REMAINS 20 FEET
REGARDLESS OF THE NUMBER OF 90° ELBOWS USED.
IN ZONE "B" ADJUSTABLE EXHAUST DAMPER MAY BE FULLY OPEN OR
FULLY CLOSED.
IN ZONE "A", ADJUSTABLE EXHAUST DAMPER MUST BE FULLY OPEN.
ZONE "B"
ZONE "A"
FV-41 MASTER FLUE VENTING REQUIREMENTS CHART
NOTE: THIS CHART IS APPLICABLE TO BOTH NATURAL GAS AND LPG INSTALLATIONS.
IMPORTANT NOTES: See Figure 15, below.
1. 18 inches maximum horizontal pipe run allowed with a 90
0
HOERZFRQQHFWHGGLUHFWO\WRWKLVILUHSODFH¶VIOXHVWDUWHUFRl-
lar.
2. Maximum Vertical Run allowed is 61 feet.
3. Maximum Vent System length allowed is 65 feet.
4. In =RQH ³$´, 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.
5. In =RQH ³%´, 20 feet maximum horizontal
run allowed only if the first vertical section
connected directly to the top of this fireplace
is feet or longer. Three 90
0
elbows may be
installed anywhere within the 20 feet hori-
zontal run. No reduction in horizontal is re-
quired for the 90
0
elbows used.
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
0 in. 18"
6 in. ¶
12 in. ¶
18 in. ¶
24 in. 11'
36 in. 15¶´
4 ft. - 41 ft. 20'
41ft. - 61 ft. Varies
Figure 14