Manifold Venting - Alliance Laundry Systems DA0220SRG Instalación

Manifold Venting

While it is preferable to exhaust tumblers individually
to the outdoors, a main collector duct may be used if it
is sized according to Figure 12. This illustration
indicates minimum diameters, which should be
increased if the collector length exceeds 14 feet and
two 90° elbows. The diameter of a round duct must be
increased by 10% for each additional 20 feet
(6.1 meters). Cross sectional area of a rectangular or
square duct must be increased 20% for each additional
20 feet (6.1 meters). Refer to Table 12 to determine
equivalent ducting sizing. The collector duct may be
rectangular or square in cross section, as long as the
area is not reduced. Provisions MUST be made for lint
removal and cleaning of the collector duct.
The vent collector system must be designed so the
static back pressure measured 12 inches (305 mm)
from the exhaust outlet does not exceed the maximum
allowable pressure specified on the installation sticker
on the rear of tumbler. Static back pressure must be
measured with all tumblers vented into the collector
operating.
Never connect a tumbler duct at a 90° angle to the
collector duct (refer to Figure 11). Doing so will
cause excessive back pressure, resulting in poor
performance. Never connect two tumbler exhaust
ducts directly across from each other at the point of
entry to the collector duct.
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With the tumbler (both pockets on stacked models) in
operation, airflow at any point in the duct should be at
least 1200 feet per minute (366 meters per minute) to
ensure that lint remains airborne. If 1200 feet per
minute cannot be maintained, schedule a regular
inspection and cleaning of the ductwork.
The collector system must be designed so the static
back pressure measured 12 inches (305 mm) from
the exhaust outlet does not exceed the maximum
allowable pressure specified on the installation sticker
on the rear of tumbler. This must be measured with all
tumblers vented into the collector operating.
Figure 11
Exhaust Requirements
T438I
39