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Dryer Enclosure Requirements ______
Bulkheads and partitions should be made of non-
combustible material.
NOTE: Allowances must be made for opening the control
door.
A
The requirement to allow the door to open completely
is 33-inches (83.8 cm).
B
A minimum overhead clearance of 6-inches (15.24 cm)
is required.
C
Dryer should be positioned a minimum of 12-inches
(30.48 cm) away from the nearest obstruction.
24-inches (60.96 cm) is recommended for ease of
installation, maintenance, and service.
D
1/16" (1.5875 mm) minimum is required.
E
Flooring should be level or below dryer cabinet for ease
of removing panels during maintenance.
F
Dryers may be positioned sidewall to sidewall, however
a 1/16" (1.5875 mm) minimum allowance must be
made for the opening and closing of the control door,
along with the removal of panels during maintenance.
Fresh Air Supply Requirements ______
When the dryer is operating, it draws in room air, heats it,
passes this air through the tumbler, and exhausts it out of
the building. Therefore, the room air must be continually
replenished from the outdoors. If the make-up air is
inadequate, drying time and drying efficiency will be
adversely affected. Ignition problems and sail switch
"fluttering" problems may result, as well as premature motor
failure from overheating. The dryer must be installed with
provisions for adequate combustion and make-up air supply.
Air supply (make-up air) must be given careful consideration
to ensure proper performance of each dryer. Fresh air
ventilation openings shall not be blocked and/or sealed. As
a general rule, an unrestricted air entrance from the outdoors
of 128 inch
2
(826 cm
2
) is required for each dryer. (Based on
1 inch
2
[6.5 cm
2
] per 1,000 Btu [252 kcal].)
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 all the dryers.
8
A = 16-inches (40.64 cm)
EXAMPLE: For a bank of 4 dryers, 2 unrestricted openings
measuring 16-inches by 16-inches (40.64 cm by 40.64 cm)
are acceptable.
To compensate for the use of registers or louvers used over
the openings, this area must be increased by approximately
33%. Make-up air openings should not be located in an
area directly near where exhaust vents exit the building.
Allowances must be made for remote or constricting
passageways or where dryers are located at high altitudes
or predominantly low pressure areas.
IMPORTANT: Make-up air must be 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.
NOTE: Component failure due to dry cleaning solvent
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, and shutdown of the burner by the
airflow (sail) switch, burner hi-limits, or lint chamber hi-limit
protector thermostat. The dryer must be installed with a
proper exhaust duct connection to the outside.
As per the National Fuel Gas Code, "Exhaust ducts for
type 2 clothes dryers shall be constructed of sheet metal or
other noncombustible material. Such ducts shall be
equivalent in strength and corrosion resistance to ducts
made of galvanized sheet steel not less than 26 gauge
(0.0195-inches [0.50 mm]) thick."
Maytag Co.
B = 16-inches (40.64 cm)
113249 - 2
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