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113062-17 Maytag Co. 9
IMPORTANT: Make-up air openings should not be located
near ductwork exhaust outlets. If make-up air openings
are too close to the exhaust outlet, lint and fumes may be
drawn back into the dryer area through these openings.
NOTE: Component failure due to dry cleaning fumes will
void the warranty.
Exhaust Requirements ________________
Exhaust ductwork should be designed and installed by a
qualified professional. Improperly sized ductwork will create
excessive back pressure, which results in slow drying,
increased use of energy, overheating of the dryer, and
shutdown of the burner by the airflow (sail) switches, burner
hi-limits, or tumbler hi-heat thermostats. The dryer must be
installed with a proper exhaust duct connection to the outside.
CAUTION: This dryer produces combustible lint and must
be exhausted to the outdoors.
Improperly sized or installed exhaust ductwork can create
a potential fire hazard.
The exhaust ductwork should be laid out in such a way that
the ductwork travels as directly as possible to the outdoors
with as few turns as possible. When single dryer venting is
used, the ductwork from the dryer to the outside exhaust outlet
must not exceed 10 feet. In the case of multiple (common)
dryer venting, the distance from the last dryer to the outside
exhaust outlet must not exceed 20 feet. The shape of the
exhaust ductwork is not critical so long as the minimum
cross-sectional area is provided.
Single Dryer Venting
When possible, it is suggested to provide a separate exhaust
duct for each dryer. The exhaust ductwork should be laid out
in such a way that the ductwork travels as directly as possible
to the outdoors with as few turns as possible. It is suggested
that the use of 90° turns in ducting be avoided; use 30° or 45°
angles instead. The shape of the exhaust ductwork is not
critical so long as the minimum cross-sectional area is
provided.
IMPORTANT: Exhaust back pressure measured by a
manometer at the dryer’s exhaust duct area must be no
less than 0 and must not exceed 0.3 in wc when both
tumblers are operating.
Dryer Enclosure Requirements _______
Bulkheads and partitions should be made of noncombustible
materials and must be located a minimum of 12-inches
(18-inches or more is recommended for ease of installation,
maintenance, and service) above the dryer outer top, except
along the front of the dryer, which may be closed in if desired.
NOTE: Even though a minimum of 12-inches above the
dryer outer top is acceptable, a clearance of 18-inches (or
more) is suggested for ease of installation and service
(electrical power connections).
When fire sprinkler systems are located above the dryers,
a minimum of 12-inches above the dryer outer top is
required.
Allowances must be made for opening the control door.
Dryers may be positioned sidewall to sidewall. However,
allowances must be made for opening and closing of the
control door and the lint door. It is suggested that the dryer be
positioned about 2 feet away from the nearest obstruction for
ease of installation, maintenance, and service (to be
measured from the back guard.) Refer to the illustration on
the previous page for details.
NOTE: Air considerations are important for proper and
efficient operation.
Fresh Air Supply Requirements _______
Air supply (make-up air) must be given careful consideration
to assure proper performance of each dryer. An unrestricted
source of 840 cfm is necessary for each dryer. An unrestricted
air entrance from the outdoors (atmosphere) of a minimum
of 1-1/2 square feet is required for each dryer. This area
must be enlarged if louvers or registers cover the opening. It
is not necessary to have a separate make-up air opening for
each dryer. Common make-up air openings are acceptable.
However, they must be set up in such a manner that the
make-up air is distributed equally to the dryers. For example,
for a bank of eight dryers, a total make-up air opening of 12
square feet is required. Two openings measuring 2 feet by 3
feet (6 square feet) are acceptable. (Refer to the illustration
on the this page.)
Allowances must be made for remote or constricting
passageways or where dryers are located at excessive
altitudes or predominantly low-pressure areas. The dryer
must be installed with provisions for adequate combustion
and make-up air supply.
IMPORTANT: Make-up air must be provided from a source
free of dry cleaning solvent fumes. Make-up air that is
contaminated by dry cleaning solvent fumes will result in
irreparable damage to the motors and other dryer
components.