Operating instructions

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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.
ZONE "B"
ZONE "A"
FV46 MASTER FLUE VENTING REQUIREMENTS CHART
NOTE: THIS CHART IS APPLICABLE TO BOTH NATURAL GAS AND LPG INSTALLATIONS.
IMPORTANT NOTES:
1. 18 inches maximum horizontal pipe run allowed with a 90
0
elbow connected directly to this fireplace’s flue starter col-
lar.
2. Maximum Vertical Run allowed is 50 feet.
3. Maximum Vent System length allowed is 50 feet.
4. In Zone “A”, 20 feet maximum hori-
zontal 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 in-
stalled after the first 90
0
elbow.
5. In Zone “B”, 20 feet maximum hori-
zontal run allowed only if the first ver-
tical section connected directly to the
top of this fireplace is 4 feet or longer.
Three 90
0
elbows may be installed
anywhere within the 20 feet horizontal
run. No reduction in horizontal is re-
quired for the 90
0
elbows used.
HIGH ALTITUDE INSTALLATION
INFORMATION: Prior to installing at alti-
tudes 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. 3’
12 in.
6’
18 in.
8’
24 in.
11'
36 in.
15’6”
4 ft. - 30 ft.
20'
31ft. - 50 ft.
Varies
MASTER FLUE VENTING
REQUIREMENTS CHART