JLA SD20, Installation & Operator'S Manual

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113545 - 3 Telephone 01422 822282 9
EXAMPLE: Two unrestricted openings measuring 3-inches
by 22-inches (7.62 cm by 55.88 cm) are acceptable.
If a closet door is installed: unobstructed air openings are
required. The air openings shall be located 3-inches
(7.62 cm) from the lower opening (above floor level) and upper
opening (below ceiling). The total free area of the air openings
in the door shall not be less than 130 inch
2
(838.708 cm
2
).
Louvered doors with equivalent air openings are acceptable.
No other fuel-burning appliance shall be installed in the same
closet as the dryer.
Fresh Air Supply Requirements ______
This appliance may only be installed in a room that meets
the appropriate ventilation requirements specified in the
national installation regulations.
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. As a general
rule, an unrestricted air entrance from the outdoors of 40
inch
2 (258 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.
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.
Domestic Type I
EXAMPLE: For a bank of four dryers, two unrestricted
openings measuring 9-inches by 9-inches (22.86 cm by
22.86 cm) are acceptable.
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.
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.
The dryer shall not be exhausted into any gas vent, chimney,
wall, ceiling or concealed space of a building.
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 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. There should be a minimum 6-inch
(15.24 cm) clearance between the back guard and the first
bend in the ductwork for ease of servicing. Single or
independent dryer venting is recommended. It is suggested
that the use of 90° turns be avoided; use 30° and/or 45° bends
instead. The minimum radius of the elbows should be 1-1/2
times the diameter of the duct. All ductwork should be smooth
inside with no projections from sheet metal screws or other
obstructions, which will collect lint. When adding ducts,
overlap the duct being connected. All ductwork joints must
be taped to prevent moisture and lint from escaping into the
building. Back draft dampers must be installed in all
commonly ducted systems. Inspection doors should be
installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning of lint from the ductwork.
IMPORTANT: It is recommended that exhaust or booster
fans not be used in the exhaust ductwork system.
A = 3-inches (7.62 cm)
B = 22-inches (55.88 cm)
A = 9-inches (22.86 cm)
B = 9-inches (22.86 cm)
NOTE: Component failure due to dry cleaning solvent
fumes will void the warranty.