ADC AD-333, Руководство по установке, Страница: 9 / 18

112175 - 9 www.adclaundry.com 9
IMPORTANT: 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 higher altitudes
or predominantly low pressure areas.
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.
NOTE: Component failure due to dry cleaning solvent
fumes will void the warranty.
Exhaust Requirements _______________
IMPORTANT: Dryer should be located where a minimum
amount of exhaust duct will be necessary.
CAUTION: This dryer produces combustible lint and
must be exhausted to the outdoors. Every six months,
inspect the exhaust ducting and remove any lint
buildup.
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-limit thermostats. (Refer to the
illustrations on the following page for details.) 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.
When possible, it is desirable to provide a separate exhaust
air duct for each dryer. The duct should go as directly as
possible to the outside air. Avoid sharp 90° right-angle turns
in ducting; use 30° or 45° angles instead. The radius of the
elbows should preferably be a minimum of 1-1/2 times the
diameter of the duct. To protect the outside end of the duct
from the weather, it may be bent downwards as indicated
on the following page. Leave at least twice the diameter of
the duct as clearance between the duct opening and the
nearest obstruction. If the exhaust duct goes through the
roof, it may be protected from the weather by using a 180°
turn to point the opening down. Allow at least twice the
diameter of the duct as clearance from the nearest
obstruction.
Do not use screens, louvers, or caps on the outside opening
of the exhaust ductwork. The ducting should be smooth
inside with no projections from sheet metal screws or other
obstructions, which will collect lint. Additionally, inspection
doors should be installed at strategic points in the exhaust
ductwork for periodic inspection and cleaning.
Inadequate exhaust facilities may cause high temperature
limit switches or airflow switches to shut off the dryers. Do
not disable the switches, which are provided for your safety.
Instead, investigate the exhaust ducting. Any obstruction or
air friction due to numerous elbows/fittings in the ducting
will slow the passage of air through the system with resulting
inefficiency and potential fire hazard.
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 (0.74 mb).
NOTE: When the exhaust ductwork passes through a wall,
ceiling, or roof made of combustible materials, the
opening must be 2-inches (5.08 cm) larger than the duct
(all the way around). The duct must be centered within
this opening.
IMPORTANT: The dryer exhaust duct must not be
connected to any gas vent, chimney, wall, ceiling, or
concealing space of a building.
It is recommended that exhaust or booster fans not be
used in the exhaust ductwork system.
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.”
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.
Air supply (make-up air) must be given careful consideration
to ensure proper performance of each dryer. The dryer must
be installed with provisions for adequate combustion and
make-up air supply. An unrestricted source of air is
necessary for each dryer. An airflow of 800 cfm (cubic feet
per minute) (22.6 cmm [cubic meters per minutes]) must
be supplied to each gas dryer. As a general rule, an
unrestricted air entrance from the outdoors (atmosphere)
of a minimum of 1-1/2 square feet (0.14 square meters) is
required for each dryer. If registers or louvers are installed
over the openings, then the area must be increased by at
least 33%. It is not necessary to have separate make-up air
openings 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.
EXAMPLE: For a bank of eight dryers, two unrestricted openings measuring
3 feet by 2 feet (0.91 meters by 0.61 meters) are acceptable.