ADC ML-25V User manual

AD-25V / ML-25V
Installation Manual
Phase 5 / 8-Inch Exhaust Duct / Dual Timer
ADC Part No. 113329-14
American Dryer Corporation
88 Currant Road, Fall River MA 02720-4781 USA
Telephone: [phone] / Fax: [phone]
e-mail: [email protected] / www.adclaundry.com
AVERTISSEMENT:
RISQUE D’INCENDIE OU D’EXPLOSION
Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves, la mort ou des dommages
matériels.
– N’entreposer pas et n’utilisez pas
d’essence ni d’autres vapeurs ou liquides
inflammables dans le voisinage de cet
appareil ou de tout autre appareil.
– QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ
●●
●●
●Ne tentez pas d’allumer d’appareil.
●●
●●
●Ne touchez à aucun interrupteur. Ne
vous servez pas des téléphones se
trouvant dans le bâtiment où vous
vous trouvez.
●●
●●
●Évacuez la pièce, le bâtiment ou la zone.
●●
●●
●Appelez immédiatement votre
fournisseur de gaz depuis un voisin.
Suivez les instructions du fournisseur.
●●
●●
●Si vous ne pouvez rejoindre le
fournisseur de gaz, appelez le service
des incendies.
– L’installation et l’entretien doivent être
assurés par un installateur ou un service
d’entretien qualifié ou par le fournisseur
de gaz.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death or
property damage.
– Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS
●●
●●
●Do not try to light any appliances.
●●
●●
●Do not touch any electrical switch;
do not use any phone in your
building.
●●
●●
●Clear the room, building or area of
all occupants.
●●
●●
●Immediately call your gas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
●●
●●
●If you cannot reach your gas
supplier, call the fire department.
– Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
!!
!!
!!!
!!
!

2 American Dryer Corp. 113329 - 14
We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the right to
make changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to
change or discontinue models. The illustrations included in this manual may not depict your particular dryer exactly.
IMPORTANT
For your convenience, log the following information:
DATE OF PURCHASE ________________________________________________________ MODEL NO. ______________
RESELLER’S NAME __________________________________________________________________________________
SERIAL NUMBER(S) __________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the
factory, you can FAX your order to ADC at [phone] or telephone your order directly to the ADC Parts
Department at [phone]. Please specify the dryer model number and serial number in addition to the
description and part number, so that your order is processed accurately and promptly.
These instructions are only valid if the following country code is on the appliance… If this code is not present on the
appliance, it is necessary to refer to the technical instructions which will provide the necessary information concerning
the modification of the appliance to the condition of use for the country.
In accordance with EN ISO 3166-1, the names of countries shall be represented by the following codes:
GB United Kingdom
IE Ireland
“IMPORTANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the
instructions to be followed if the user smells gas. These
instructions must be posted in a prominent location near the dryer.
Retain This Manual In A Safe Place For Future Reference
American Dryer Corporation products embody advanced concepts in engineering, design, and safety. If
this product is properly maintained, it will provide many years of safe, efficient, and trouble free operation.
ONLY qualified technicians should service this equipment.
OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation
manual included with the dryer.
The following “FOR YOUR SAFETY CAUTION” must be posted near the dryer in a prominent location.
FOR YOUR SAFETY
Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this or any other appliance.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet appareil
ou de tout autre appareil.

113329 - 14 www.adclaundry.com 3
Important Information .......................................... 4
A. Receiving and Handling ................................................... 4
B. Safety Precautions ........................................................... 5
Specifications ....................................................... 7
A. Specifications ................................................................... 7
Installation Procedures ........................................ 9
A. Unpacking / Setting Up .................................................... 9
B. Location Requirements .................................................. 10
C. Dryer Enclosure Requirements ....................................... 11
D. Fresh Air Supply Requirements ..................................... 12
E. Exhaust Requirements ................................................... 13
F. Electrical Information ...................................................... 18
G. Gas Information .............................................................. 24
H. Steam Information .......................................................... 28
I. Preparation for Operation / Start-Up .............................. 33
J. Preoperational Test ........................................................ 34
K. Preoperational Instructions ............................................ 35
L. Shutdown Instructions .................................................... 38
Service / Parts Information ................................ 39
A. Service ........................................................................... 39
B. Parts ............................................................................... 39
Warranty Information ......................................... 40
A. Returning Warranty Cards ............................................. 40
B. Warranty ......................................................................... 40
C. Returning Warranty Parts ............................................... 40
Routine Maintenance ......................................... 42
Troubleshooting .................................................. 45
Data Label Information ....................................... 53
Reversing Timer Spin / Dwell Adjustments ........ 54
Procedure for Functional Check
of Replacement Components ............................. 55
Burner and Tumbler / Lint Chamber
Manual Reset Hi-Limit Instructions ................... 58
IMPORTANT
You must disconnect and lockout the electric
supply and the gas supply or the steam supply
before any covers or guards are removed from
the machine to allow access for cleaning,
adjusting, installation, or testing of any
equipment per OSHA standards.
Please observe all safety precautions displayed
on the equipment and/or specified in the
installation manual included with the dryer.
CAUTION
Dryer(s) should never be left unattended while
in operation.
Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper operation.
Attention: Au moment de l’entretien des
commandes, étiquetez tous les fils avant de les
débrancher. Des erreurs de câblage peuvent
entraîner un fonctionnement inadéquat.
WARNING
Children should not be allowed to play on or
near the dryer(s). Children should be
supervised if near dryer(s) in operation.
Under no circumstances should the dryer door
switch, lint drawer switch, or the heat safety
circuit devices ever be disabled.
DO NOT MODIFY THIS APPLIANCE.
The dryer must never be operated with any of
the back guards, outer tops, or service panels
removed. Personal injury or fire could result.
The dryer must never be operated without the
lint filter/screen in place, even if an external lint
collection system is used.
If the hi-limit switch trips, a service call is
required to investigate the reason and resolve
the issue.
FOR YOUR SAFETY
Do not dry mop heads in the dryer. Do not
use dryer in the presence of dry cleaning
fumes.
The dryers must not be installed or stored in an
area where it will be exposed to water and/or
weather.
The wiring diagram for the dryer is located in
the front electrical control box area.
List of Acronyms ___________________________________
D.M.S. Drill Measurement Size
DSI Direct Spark Ignition
HVAC Heating, Ventilating, and Air-Conditioning
in WC Inches of Water Column
L.E.D. Light Emitting Diode
OSHA Occupational Safety and Health Administration
R.M.A. Return Material Authorization
UL Underwriters Laboratory
In the State of Massachusetts, the following
installation instructions apply:
■Installations and repairs must be performed
by a qualified or licensed contractor, plumber,
or gas fitter qualified or licensed by the State
of Massachusetts.
■Acceptable Shut-off Devices: Gas Cocks and
Ball Valves installed for use shall be listed.
■A flexible gas connector, when used, must not
exceed 4 feet (121.9 cm).
Table of Contents _____________________

4 American Dryer Corp. 113329 - 14
SECTION I
IMPORTANT INFORMATION
A. RECEIVING AND HANDLING
The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or optional
box) as a means of preventing damage in transit. Upon delivery, the dryer and packaging, and wooden skid should
be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect further before delivering
carrier leaves.
Dryers damaged in shipment:
1. ALL dryers should be inspected upon receipt and before they are signed for.
2. If there is suspected damage or actual damage, the trucker’s receipt should be so noted.
3. If the dryer is damaged beyond repair, it should be refused. Those dryers, which were not damaged in a
damaged shipment should be accepted, but the number received and the number refused must be noted on the
receipt.
4. If you determine that the dryer was damaged after the trucker has left your location, you should call the delivering
carrier’s freight terminal immediately and file a claim. The freight company considers this concealed damage.
This type of freight claim is very difficult to get paid and becomes extremely difficult when more than a day or
two passes after the freight was delivered. It is your responsibility to file freight claims. Dryer/parts damaged
in transit cannot be claimed under warranty.
5. Freight claims are the responsibility of the consignee, andALL claims must be filed at the receiving end. ADC
assumes no responsibility for freight claims or damages.
6. If you need assistance in handling the situation, please contact the ADC Traffic Manager at [phone].
IMPORTANT: The dryer must be transported and handled in an upright position at ALL times.

113329 - 14 www.adclaundry.com 5
B. SAFETY PRECAUTIONS
WARNING: For your safety, the information in this manual must be followed to minimize the risk of
fire or explosion or to prevent property damage, personal injury, or loss of life.
WARNING: The dryer must never be operated with any of the back guards, outer tops, or
service panels removed. PERSONAL INJURY OR FIRE COULD RESULT.
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. DO NOT spray aerosols in the vicinity of this appliance while it is in operation.
3. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the user
smells gas. The instructions should be posted in a prominent location.
4. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of ALL occupants.
e. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
f. If you cannot reach your gas supplier, call the fire department.
5. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
6. Dryer(s) must be exhausted to the outdoors.
7. Although ADCproduces a very versatile dryer, there are some articles that, due to fabric composition or cleaning
method, should not be dried in it.
WARNING: Dry only water washed fabrics. DO NOT dry articles spotted or washed in dry cleaning
solvents, a combustible detergent, industrial chemicals, or “all purpose” cleaner.
EXPLOSION COULD RESULT.
WARNING: DO NOT dry rags or articles coated or contaminated with gasoline, kerosene, oil, paint,
or wax. EXPLOSION COULD RESULT.
IMPORTANT: The dryer must be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a
fire hazard.
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or
similarly textured rubber materials. Drying in a heated tumbler may damage plastics or
rubber and may be a fire hazard.

6American Dryer Corp. 113329-14
8. The possible presence of residual quantities of aggressive or decomposed chemicals in the load may produce
damage to the machine and harmful fumes.
9. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork,
and area around the back of the dryer. The frequency of inspection and cleaning can best be determined from
experience at each location.
WARNING: The collection of lint in the burner area and exhaust ductwork can create a potential fire
hazard.
10. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or National
Electric Code ANSI/NFPA70, or in Canada, Canadian Electric Code CSA C22.1.
NOTE: Failure to do so will VOID THE WARRANTY.
11.UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or the heat safety circuit
devices ever be disabled.
WARNING: PERSONAL INJURY OR FIRE COULD RESULT.
12. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
13. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articles left in the dryer after the drying and cooling cycles have been completed can
create a fire hazard.
14. READ AND FOLLOWALL CAUTION AND DIRECTION LABELS ATTACHED TO THE DRYER.
15. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less than
sixty-six percent (66%), 16 lb (7 kg) of its rated capacity.
WARNING: YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND
THE GAS SUPPLY OR THE STEAM SUPPLYBEFOREANY COVERS OR
GUARDS ARE REMOVED FROM THE MACHINE TO ALLOWACCESS FOR
CLEANING, ADJUSTING, INSTALLATION, OR TESTING OFANY
EQUIPMENT PER OSHA STANDARDS.
WARNING: Disconnect power before resetting the hi-limit. The hi-limit is located in the
burner area. Press and release and the hi-limit will reset.
CE ONLY
IMPORTANT:This appliance must only be installed and operated in the country of destination
indicated on the dryer’s data plate. If the appliance is to be installed and operated in a
country other than the one indicated on the data plate, a data plate amendment must
be obtained from American Dryer Corporation.
IEC335 applies.

113329 - 14 www.adclaundry.com 7
MAXIMUM CAPACITY (DRY WEIGHT) 25 lb 11.3 kg
TUMBLER DIAMETER 32-3/4” 83.2 cm
TUMBLER DEPTH 19” 48.3 cm
TUMBLER VOLUME 9.26 cu ft 262.21 L
TUMBLER / DRIVE MOTOR 1/2 hp*0.373 kW
BLOWER / FAN MOTOR N / A
DOOR OPENING (DIAMETER) 21-1/2” 54.61 cm
DOOR SILL HEIGHT 31” 78.74 cm
WATER CONNECTION 3/4-11.5 NH
(North America)
3/4” B.S.P.T. (Outside North America)
DRYERS PER 20’/40’ CONTAINER 14 / 30
DRYERS PER 48’/53’ TRUCK 45 / 51
VOLTAGE AVAILABLE 120-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 407 lb 184.6 kg
APPROXIMATE SHIPPING WEIGHT 446 lb 202.1 kg
AIRFLOW 60 Hz 460 cfm 13 cmm
50 Hz 383 cfm 10.85 cmm
HEAT INPUT 78,000 Btu/hr 19,656 kcal/hr
EXHAUST CONNECTION (DIAMETER) 8” 20.32 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
INLET PIPE CONNECTION 1/2” M.N.P.T.**
1/2” B.S.P.T.
(CE and Australia Only)
VOLTAGE AVAILABLE 208-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 407 lb 184.6 kg
APPROXIMATE SHIPPING WEIGHT 446 lb 202.1 kg
AIRFLOW 60 Hz 460 cfm 13 cmm
50 Hz 383 cfm 10.85 cmm
EXHAUST CONNECTION (DIAMETER) 8” 20.32 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
OVEN SIZE
kW Btu/hr kcal/hr
15 51,200 12,900
18 61,400 15,400
20 68,200 17,200
24 81,900 20,600
30 102,300 25,700
VOLTAGE AVAILABLE 120-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 435 lb 197.3 kg
APPROXIMATE SHIPPING WEIGHT 474 lb 214.8 kg
AIRFLOW 60 Hz 460 cfm 13 cmm
50 Hz 383 cfm 10.85 cmm
STEAM CONSUMPTION 98.8 lb/hr 44.8 kg/hr
OPERATING STEAM PRESSURE 125 psi max 8.6 bar
EXHAUST CONNECTION (DIAMETER) 8” 20.32 cm
COMPRESSED AIR CONNECTION 1/8” F.N.P.T.
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
BOILER HORSEPOWER (NORMAL LOAD) 2.9 Bhp
SUPPLY CONNECTION 1” F.N.P.T.
RETURN CONNECTION 1” F.N.P.T.
SECTION II
SPECIFICATIONS
A. SPECIFICATIONS
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
GASELECTRICSTEAM***
Shaded areas are stated in metric equivalents 3/21/17
* Reversing dryer available with 3-phase (3ø) 1/2 hp (0.373 kW) motors standard.
** Size of piping to dryer varies with installation conditions. Contact factory for assistance.
*** Specify air-operated or electromechanical steam damper system. Air-operated steam damper system
must be provided with clean, dry, and regulated 80 psi ± 10 psi (5.51 bar ± 0.68 bar) air supply.

8 American Dryer Corp. 113329 - 14
SPECIFICATIONS
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.

113329 - 14 www.adclaundry.com 9
SECTION III
INSTALLATION PROCEDURES
Installation should be performed by competent professional in accordance with local, state, and country codes. In
the absence of these codes, the installation must conform to applicableAmerican National Standards: National Fuel
Gas Code ANSI Z223.1/NFPA 54 and National Electric Code ANSI/NFPA 70, or in Canada, the installation must
conform to applicable Canadian Standards: Natural Gas and Propane Installation Code CSA B149.1 and Canadian
Electric Code CSA C22.1.
A. UNPACKING / SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in an upright position at ALL times.
NOTE: For OPL dryer models equipped with locks, the lock used is a dummy lock and no key is
supplied or needed. The lock can be turned with any key, a screwdriver, a small coin, or any
small sharp object. For coin-operated dryers, the MK-100 (master key for both the control
door and lint door) should be made accessible because it will be needed throughout various
phases in the installation of the dryer.
The dryer can be moved to its final location while still attached to the skid or with the skid removed. To unskid the
dryer, locate and remove the four (4) bolts securing the base of the dryer to the wooden skid. Two (2) are at the rear
base (remove the back panel for access), and two (2) are located in the bottom of the lint chamber. To remove the
two (2) bolts located in the lint chamber area, remove the lint door.
With the skid removed, to make it easier to slide the dryer into its final position, slightly lower ALL four (4) leveling
legs, so that the dryer will slide on the legs instead of the base frame.
To increase bearing life and improve efficiency, the dryer should be tilted slightly to the rear.
The tumbler of some 50 Hz model dryers is supported during shipping by a wooden block. REMOVE THIS BLOCK
BEFORE STARTING THE DRYER.
IMPORTANT: For microprocessor controller (computer) models, this wooden block must be
removed before connecting power to the dryer or irreparable damage to the tumbler
will result.
1. Leveling Dryer
The dryer is equipped with four (4) leveling legs, one (1) at each corner of the base. Two (2) are located at the
rear of the dryer base, and two (2) are located in the lint chamber (coop). To increase bearing life and improve
efficiency, the dryer should be tilted slightly to the rear.

10 American Dryer Corp. 113329 - 14
B. LOCATION REQUIREMENTS
Before installing the dryer, ensure the location conforms to local codes and ordinances. In the absence of such codes
or ordinances the location must conform with National Fuel Gas Code ANSI Z223.1/NFPA 54, or in Canada, the
installation mustconformto applicable Canadian Standards: Natural Gas and Propane Installation Code CSAB149.1.
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on noncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in Section D).
5. Clearance provisions must be made from combustible construction as noted in this manual (refer to Dryer
Enclosure Requirements in Section C).
6. Provisions must be made for adequate clearances for servicing and for operation as noted in this manual (refer
to Dryer Enclosure Requirements in Section C).
7. Dryer must be exhausted to the outdoors as noted in this manual (refer to Exhaust Requirements in Section
E).
8. Dryer must be located in an area where correct exhaust venting can be achieved as noted in this manual (refer
to Exhaust Requirements in Section E).
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be necessary.
9. The dryer must be installed with a proper exhaust duct connection to the outside.
10. The dryer must be installed with provisions for adequate combustion and make-up air supply.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint build up.
IMPORTANT: The dryer must be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).

113329 - 14 www.adclaundry.com 11
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of 12-inches
(30.48 cm) above the dryer’s outer top; 18-inches (45.72 cm) for steam dryers, except along the front of the dryer
which may be closed if desired.
NOTE: Allowances must be made for opening the control door.
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease of maintenance.
* 1-inch (2.54 cm) maximum for electric dryers.
** 18-inch (45.72 cm) minimum for steam dryers.
NOTE: Air considerations are important for proper and efficient operation.
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. It is suggested that the dryer be positioned about 2 feet (0.61 meters)
away from the nearest obstruction for ease of installation, maintenance, and service (to be measured from the back
guard). Refer to the illustration above for details.

12 American Dryer Corp. 113329 - 14
D. FRESH AIR SUPPLYREQUIREMENTS
This appliance may only be installed in a room that meets the appropriate ventilation requirements specified in the
national installation regulations.
The air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. As a general rule, an unrestricted air entrance from the
outdoors (atmosphere) of a minimum of 1 square foot (0.093 square meters) is required for each dryer. If registers
or louvers are installed over the openings, then the area must be increased. 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. The dryer must be installed with provisions
for adequate combustion and make-up air supply.
EXAMPLE: For a bank of eight (8) dryers, two (2) unrestricted openings measuring 2 feet by 2 feet (0.61 meters by
0.61 meters) (4 square feet [0.372 square meters]) are acceptable.
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 excessive 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.

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E. 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-limit, or lint chamber hi-heat protector thermostat. The dryer must be installed
with a proper exhaust duct connection to the outside.
The design of the flue system shall be such that any condensate formed when operating the appliance from cold shall
either be retained and subsequently re-evaporated or discharged.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors.
When possible, it is suggested to provide a separate (single) exhaust duct for each dryer.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCTWORK CAN
CREATE APOTENTIAL FIRE HAZARD.
CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.
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. The shape of the ductwork is not critical so long as the minimum cross
section area is provided. Single or independent dryer venting is recommended.
It is suggested that the use of 90° turns be avoided; use 30° or 45° angles instead.
The ductwork should be smooth inside with no projections from sheet metal screws or other obstructions, which
will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is connected. ALL
ductwork joints must be taped to prevent moisture and lint from escaping into the building. Additionally, inspection
doors should be installed at strategic points in the exhaust ductwork for periodic inspection and cleaning.
IMPORTANT: When connecting ductwork to the dryer exhaust duct, be sure that when screws are
used they DO NOT restrict the operation (both opening and closing) of the damper.
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.
To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward should be
installed where the exhaust exits the building. If the ductwork travels vertically up through the roof, it should be
protected from the weather by using a 180° turn to point the opening downward. In either case, allow at least twice
the diameter of the duct between the duct opening and the nearest obstruction (i.e., roof or ground level).
IMPORTANT: DO NOT use screens, louvers, or caps on the outside opening of the exhaust
ductwork.
IMPORTANT: Exhaust back pressure measured by a manometer/magnehelic in the exhaust duct
must be no less than 0 and must not exceed 0.3 in WC (0.74 mb).
NOTE: It is recommended that exhaust or booster fans not be used in the exhaust ductwork system
except where necessary to maintain exhaust back pressure (in the exhaust duct) between zero
and 0.3 in WC (0.74 mb). Where employed, booster fans must not activate the dryer airflow
proving switch (sail switch) when the dryer is not in operation.

14 American Dryer Corp. 113329 - 14
SINGLE DRYER VENTING
IMPORTANT: For exhaust duct runs over 25 feet (7.62 meters) a minimum size of 10-inches (25.4
cm) must be used.
HORIZONTAL VENTING
When a single 8-inch (20.32 cm) horizontal vent is used, the ductwork to the outlet cannot exceed 25 feet (7.62
meters) refer to Illus. Abelow. This calculation of 25 feet (7.62 meters) compensates or allows for the use of a
maximum of only one (1) elbow (which is the outside outlet protection).
Illus. A

113329 - 14 www.adclaundry.com 15
If the length of the ductwork run or quantity of elbows used exceeds the above noted specifications, the cross-
sectional area of the ductwork must be increased in proportion to the number of elbows or duct run added.
IMPORTANT: For extended ductwork runs, the cross-sectional area of the ductwork can only be
increased to an extent. For extended ductwork runs, a professional HVAC firm must
be consulted for proper venting information.
VERTICAL VENTING
When vertical single 10-inch (25.4 cm) venting is used (refer to Illus. B below), the ductwork from the dryer to the
outside outlet cannot exceed 40 feet (12.19 meters) (refer to Illus. B below). This calculation compensates for the
use of a maximum of three (3) elbows including the two (2) elbows creating the 180° (turned downward) outside
outlet.
Illus. B

16 American Dryer Corp. 113329 - 14
MULTIPLE DRYER (COMMON) VENTING
If it is not feasible to provide separate exhaust ducts for each dryer, ducts for individual dryers may be channeled
into a common main duct. Each dryer is provided with a back draft damper. The individual ducts should enter the
bottom or side of the main duct at an angle not more than 45° in the direction of the airflow.
The main common duct may be any shape so long as the minimum cross-sectional area is provided. The main duct
should be tapered with the diameter increasing before each individual 8-inch (20.32 cm) duct is added (refer to
Illus. C for Horizontal Venting and Illus. D for Vertical Venting).
IMPORTANT: No more than four (4) dryers maximum should be connected to one (1) main
common duct with a vertical run.
NOTE: Distance between dryer single ducts being connected to the main common duct must be a
minimum of 34-1/4” (87 cm) dryer width.
Ductwork should be laid out in such a manner where allowances are made at rear area of the
dryer for removal of rear service panels or guards.
The illustrations on page 17 show the minimum cross section area for multiple dryer venting. These figures must
be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous elbows or is
unusually long.
IMPORTANT: For extended ductwork runs, the cross section area of the duct can only be increased
to an extent. For extended ductwork runs, a professional HVAC firm must be
consulted for proper venting information.
Refer to page 17 for Multiple Dryer Horizontal Venting and Vertical Venting examples/illustrations.

113329 - 14 www.adclaundry.com 17
HORIZONTAL VENTING
Illus. C
VERTICAL VENTING
Illus. D

18 American Dryer Corp. 113329 - 14
F. ELECTRICAL INFORMATION
1. Electrical Requirements
ALL electrical connections must be made by a properly licensed and competent electrician. This is to ensure
that the electrical installation is adequate and conforms to local, state, and national regulations or codes of the
country of destination. In the absence of such codes, ALL electrical connections, materials, and workmanship
must conform to the applicable requirements of National Electric CodeANSI/NFPA70, or in Canada, Canadian
Electric Code CSA C22.1.
For personal safety, the dryer must be electrically grounded in accordance with local codes and/or National
Electric Code ANSI/NFPA 70, or in Canada, Canadian Electric Code CSA C22.1.
IMPORTANT: Failure to comply with these codes or ordinances or the requirements stipulated in this
manual can result in personal injury or component failure.
NOTE: Component failure due to improper installation will VOID THE WARRANTY.
IMPORTANT: Each circuit must be connected to an independently protected branch circuit.
IMPORTANT: USE ONLY COPPER CONDUCTOR CABLE of proper ampacity and insulation in
accordance with electric codes for making service connections.
NOTE: The use of aluminum wire will VOID THE WARRANTY.
IMPORTANT: A separate circuit servicing each dryer must be provided.
2. Electrical Service Specifications
a. Electric Service
1) Gas Models and Steam Models ONLY
IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is
affixed to the left side panel area behind top control (access) door. In the case of 208
VAC or 240 VAC, the supply voltage must match the electric service specifications of
the data label exactly.
IMPORTANT: USE ONLY COPPER CONDUCTOR CABLE of proper ampacity and insulation in
accordance with electric codes for making service connections.
WARNING: 208 VAC AND 240 VAC ARE NOT THE SAME. Any damage done to dryer
components due to improper voltage connections will automatically VOID THE
WARRANTY.
NOTE: On gas dryers and steam dryers, to convert from 208 VAC to 240 VAC (or visa versa), the 24
VAC transformer wiring sequence must be changed.

113329 - 14 www.adclaundry.com 19
2) Electric Models ONLY
ALL electrically heated dryers must be connected to the electric service shown on the dryer’s data
label, which is affixed to either the backside of the upper control door or left side panel/wall area behind
the control door. The connecting wires must be properly sized to handle the rated current.
NOTE: Electrically heated service (amperage) specifications/requirements are not available at the
time of printing. Contact factory for update.
NOTE: Component failure due to improper voltage application will VOID THE WARRANTY.
3. Grounding
A ground (earth) connection must be provided and installed in accordance with local, state, and national
regulations or codes of the country of destination. In the absence of these codes, grounding must conform to
applicable requirements of National Electric CodeANSI/NFPA70, or in Canada, the installationmust conform
to applicable Canada Standards: Canadian Electric Code CSA C22.1. The ground connection may be to a
proven earth ground at the location service panel.
For added personal safety, when possible, it is suggested that a separate ground wire (no. 18 minimum) be
connected from the ground connection of the dryer to a grounded cold water pipe. DO NOT ground to a gas
pipe or hot water pipe.The grounded cold water pipe must have metal to metal connection ALL the way to the
electrical ground. If there are any nonmetallic interruptions, such as, a meter, pump, plastic, rubber, or other
insulating connectors, they must be jumped out with no. 4 copper wire and securely clamped to bare metal at
both ends.
IMPORTANT: For personal safety and proper operation, the dryer must be grounded.
Provisions are made for ground connection in each dryer at the electrical service connection area.
4. Electrical Connections
A wiring diagram is located inside the control box for connection
data.
a. Gas Models and Steam Models ONLY
NOTE: A CIRCUIT SERVICING EACH DRYER MUST
BE PROVIDED.
1) Single-Phase (1ø) Wiring Connections / Hookup
The electrical input connections on ALL single-phase (1ø)
gas model dryers and steam model dryers are made into
the rear service box located at the upper left area of the
dryer.

20 American Dryer Corp. 113329 - 14
If local codes permit, power to the dryer can be made by the use of a flexible UL listed power cord or
pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired directly to the service
breaker panel. In both cases, a strain relief must be installed where the wiring enters the dryer.
S INGLE -P HASE (1 Ø ) E LECTRICAL C ONNECTIONS L EADS
Black
+
White
White
-
Neutral
Green
Ground
or
L2