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19
Horizontal Venting:
When single dryer horizontal venting is used, the length of ductwork from the dryer to the outside exhaust
outlet
must not
exceed
45 feet (13.71 meters). The minimum diameter of this ductwork
must be
at least
20-inches (50.8 cm) (for MLG-190DR 12-inches [30.4 cm]). The shape of the ductwork is not critical as
long as the minimum cross-sectional area is provided. It is suggested that the use of 90° turns be avoided;
use 30° and/or 45° angles instead. The radius of the elbows
should preferably be
1-1/2 times the
diameter of the duct. No more than one (1) elbow
must be
used including the elbow used for outside
protection from the weather. If more than one (1) elbow is needed, the cross-sectional area
must be
increased. When adding ducts, the duct to be added should overlap the duct to which it is to be connected.
ALL
ductwork
should be
smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint.
ALL
ductwork joints
must be
taped to prevent moisture and lint from escaping into
the building. Inspection doors
should be
installed at strategic points in the exhaust ductwork for periodic
inspection and cleaning of lint from the ductwork.
Vertical Venting:
When single dryer vertical venting is used, the length of ductwork from the dryer to the outside exhaust
outlet
must not
exceed
30 feet (9.14 meters). The minimum diameter of this ductwork
must be
at least
24-inches (60.96 cm) (for MLG-190DR 12-inches [30.4 cm]) even though the dryer exhaust duct is only
20-inches (50.8 cm) (for MLG-190DR 12-inches [30.4 cm]). The shape of the ductwork is not critical as
long as the minimum cross-sectional area is provided. It is suggested that the use of 90° turns be avoided;
use 30° and/or 45° angles instead. The radius of the elbows
should preferably be
1-1/2 times the
diameter of the duct. No more than three (3) elbows
must be
used, including the two (2) elbows (gooseneck)
used for outside protection from the weather. If more than three (3) elbows are needed, the cross-sectional
area
must be
increased. When adding ducts, the duct to be added should overlap the duct to which it is to
be connected.
ALL
ductwork
should be
smooth inside with no projections from sheet metal screws or
other obstructions, which will collect lint.
ALL
ductwork joints
must be
taped to prevent moisture and lint
from escaping into the building. Inspection doors
should be
installed at strategic points in the exhaust
ductwork for periodic inspection and cleaning of lint from the ductwork.
Содержание ML-190
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