5
IMPORTANT
To prevent possible recirculation of flue
gases, the installer must consider the
effects of prevailing wind conditions,
eddy zones, nearby buildings,
obstructions, or other obstacles such as
shrubs when planning exhaust and air
intake locations. M&G DuraVent can not
be held responsible for poor appliance
performance or damage to buildings
due to an incorrect installation. The
minimum clearances detailed within our
instructions may not be adequate in some
circumstances depending on the specifics
of the installation. For this reason we
always recommend vertical venting.
Refer to the appliance manufacturer's
instructions for maximum and minimum
vent lengths permitted with your specific
appliance model. This information should
include guidance on the maximum number
of elbows and related pressure-drops. The
total vent length from the appliance to
the termination shall not be greater than
specified by the appliance manufacturer.
If specific guidance is not offered by the
appliance manufacturer as to Equivalent
Vent Lengths (EVL) for vent components, the
general guidelines in Table 2 can be used.
CONDENSATE DRAIN
(Fig.1)
Refer to the appliance manufacturer’s
installation instructions for requirements of
condensate drainage. Ensure proper system
slope for drainage.
(Fig.6)
Figure 1
SIPHON
Table 2 - Equivalent Length Chart
2" Equivalent
Length
3" Equivalent
Length
4" Equivalent
Length
5" Equivalent
Length
6" Equivalent
Length
8" Equivalent
Length
1-ft Vent Pipe
1-ft
1-ft
1-ft
1-ft
1-ft
1-ft
1-ft Flex Pipe
2-ft
(same diameter
as rigid)
2-ft
(same diameter
as rigid)
2-ft
(same diameter
as rigid)
2-ft
(same diameter
as rigid)
N/A
N/A
1-ft Flex Pipe
0.4-ft
(updsized one
diameter)
0.6-ft
(updsized one
diameter)
0.6-ft
(updsized one
diameter)
N/A
N/A
N/A
45 Elbow
3-ft
3-ft
5-ft
6-ft
6-ft
13-ft
90 Elbow
5-ft
7-ft
12-ft
14-ft
14-ft
19-ft
Tee
9-ft
12-ft
19-ft
21-ft
22-ft
29-ft
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow these installation
instructions could result in personal
injury or death
P-TRAP
