Alliance Laundry Systems YT050E, Руководство по установке

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Exhaust Requirements
31
70420301 (EN)
IMPORTANT: For best performance provide an
individual exhaust duct for each tumble dryer. Do
not install a hot water heater in a room containing
tumble dryers. It is better to have the water heater
in a separate room with a separate air inlet.
Individual Venting
For maximum efficiency and performance, it is
preferred to exhaust tumble dryer(s) individually to the
outdoors.
IMPORTANT: At no point may the cross sectional
area of installed venting be less than the cross
sectional area of the exhaust outlet of the tumble
dryer.
The exhaust duct 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 the tumble dryer.
NOTE: Static back pressure must be measured
with the tumble dryer running.
The maximum allowable length venting is 14 feet (4.3 m)
and two 90° elbows or equivalent. If the equivalent
length of a duct required for an installation exceeds the
maximum allowable equivalent length, the diameter of
a round duct must be increased by 10% for each
additional 20 feet (6.1 m). Cross section area of a
rectangular duct must be increased by 20% for each
additional 20 feet (6.1 m). Refer to Table 2 to
determine equivalent venting.
Example: A 12 inch (305 mm) diameter duct’s
equivalent length of 14 feet (4.3 m) of duct and two
90° elbows is:
Equivalent Length = 14 feet + (2) 90° elbows
= 14 feet + 14 feet + 14 feet
= 42 feet (12.8 m)
With the tumble dryer in operation, airflow at any
point in the duct should be at least 1200 feet per
minute (366 m/min.) to ensure that lint remains
airborne. If 1200 feet per minute (366 m/min.)
cannot be maintained, schedule monthly
inspections and cleaning of the ductwork.
NOTE: The maximum length of a flexible metal
duct must not exceed 7.87 ft. (2.4 m) as required to
meet UL2158, clause 7.3.2A.
Manifold Venting
While it is preferable to exhaust tumble dryers
individually to the outdoors, a main collector duct may
be used if it is sized according to Figure 16 and Figure
17. This illustration indicates minimum diameters, and
should be increased if the collector length exceeds 14
feet (4.3 m) and two 90° elbows. The diameter of a
round duct must be increased by 10% for each
additional 20 feet (6.1 m). Cross sectional area of a
rectangular or square duct must be increased 20% for
each additional 20 feet (6.1 m). Refer to Table 3 and
Table 4 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 of 0.5 W.C.I. (1.3 mbar) as
specified on the installation sticker on the rear of
tumble dryer. Static back pressure must be measured
with all tumble dryers vented into the collector
operating.
NOTE: Never connect a tumble dryer duct at a 90°
angle to the collector duct. Refer to Figure 14 .
Doing so will cause excessive back pressure,
resulting in poor performance. Never connect two
tumble dryer exhaust ducts directly across from
each other at the point of entry to the collector
duct.
With the tumble dryer in operation, airflow at any
point in the duct should be at least 1200 feet per
minute (366 m/min.) to ensure that lint remains
airborne. If 1200 feet per minute (366 m/min.)
cannot be maintained, schedule monthly
inspections and cleaning of the ductwork.
Figure 14
Duct
Diameter
Equivalent Length of Rigid
Straight Duct
8 in. (203 mm)
10 in. (254 mm)
12 in. (305 mm)
14 in. (356 mm)
16 in. (406 mm)
18 in. (457 mm) One 90° elbow = 9.3 ft. (2.83 m)
One 90° elbow = 11.6 ft. (3.5 m)
One 90° elbow = 14 ft. (4.3 m)
One 90° elbow = 16 ft. (4.9 m)
One 90° elbow = 18.7 ft. (5.7 m)
One 90° elbow = 21 ft. (6.4 m)
Equivalent Length (feet) = 1.17 x Duct Diameter (inches)
Table 2
T438I