ADC AD-120ES User manual

AD-120ES Installation Manual
Extended Side Panels – Phase 7
ADC Part No. 113386-14
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781 USA
Telephone: [phone] / Fax: [phone]
e-mail: [e-mail]
www.amdry.com
AVERTISSEMENT: Assurez-vous de
bien suivre les instructions données dans
cette notice pour réduire au minimum le
risque d’incendie ou d’explosion ou pour
éviter tout dommage matériel, toute
blessure ou la mort.
—Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
—QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
●Ne pas tenter d’allumer d’appareils.
●Ne touchez à aucun interrupteur. Ne
pas vous servir des téléphones se
trouvant dans le bâtiment.
●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: For your safety the information
in this manual must be followed to
minimize the risk of fire or explosion and
to prevent property damage, personal
injury or death.
— 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 appliance.
●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.

We have tried to make this manual as complete as possible and hope you will find it useful. The manufacturer
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.
AD-120ES
“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.
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.
Retain This Manual in a Safe Place for Future Reference
This product embodies 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.

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. BEFORE INSTALLATION, CHECK THAT THE LOCAL
DISTRIBUTION CONDITIONS, NATURE OF GAS AND PRESSURE, AND
ADJUSTMENT OF THE APPLIANCES ARE COMPATIBLE.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYER(S).
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATION.
CAUTION
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.
FOR YOUR SAFETY
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
“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 et dangereux.»
Proposition 65
Use of this product could expose you to substances from fuel combustion
that contain chemicals known to the State of California to cause cancer,
birth defects and other reproductive harm.
▲ WARNING
!

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.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN
PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.
Dryer must not be installed or stored in an area where it will be exposed to water or
weather.
The wiring diagram for the dryer is located in the front electrical control box area.
IMPORTANT
Dryer must be installed in a location/environment, which the ambient temperature
remains between 40° F (4.44° C) and 130° F (54.44° C).
When discarding or storing your old
clothes dryer, remove the door.
Lorsque vous entreposez ou mettez votre
sécheuse au rebut, enlevez-en la porte.
WARNING
DO NOT operate this appliance before reading the instruction booklet.
WARNING
DO NOT place articles on or against this appliance.
WARNING
UNDER NO CIRCUMSTANCES should the dryer door switch(es), lint door/drawer
switch(es), or heat safety circuit(s) ever be disabled.

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
L.P. Liquid Propane
OSHA Occupational Safety and Health Administration
R.M.A. Return Material Authorization
UL Underwriters Laboratory
SECTION I: SAFETY PRECAUTIONS .................................................................................................. 2
SECTION II: SPECIFICATIONS/COMPONENT IDENTIFICATION .................................................... 5
A. Specifications ..................................................................................................................................... 5
B. Component Identification .................................................................................................................... 7
SECTION III: INSTALLATION PROCEDURES ..................................................................................... 9
A. Location Requirements ...................................................................................................................... 9
B. Unpacking/Setting Up ....................................................................................................................... 10
C. Dryer Enclosure Requirements ....................................................................................................... 12
D. Fresh Air Supply Requirements ....................................................................................................... 13
E. Exhaust Requirements .................................................................................................................... 14
F. Electrical Information........................................................................................................................ 19
G. Gas Information ................................................................................................................................ 22
H. Steam Information ............................................................................................................................ 25
I. Water Information ............................................................................................................................. 28
J. Preparation for Operation ................................................................................................................. 30
K. Preoperational Tests ........................................................................................................................ 31
L. Preoperational Instructions .............................................................................................................. 33
M. Compressed Air Requirements........................................................................................................ 34
N. Shutdown Instructions...................................................................................................................... 35
SECTION IV: SERVICE/PARTS INFORMATION ................................................................................ 36
A. Service ............................................................................................................................................. 36
B. Parts................................................................................................................................................. 36
SECTION V: WARRANTY INFORMATION .......................................................................................... 37
A. Returning Warranty Cards ............................................................................................................... 37
B. Warranty ........................................................................................................................................... 37
C. Returning Warranty Parts ................................................................................................................ 37
SECTION VI: ROUTINE MAINTENANCE ........................................................................................... 39
A. Cleaning ........................................................................................................................................... 39
B. Adjustments ..................................................................................................................................... 40
C. Lubrication ........................................................................................................................................ 41
SECTION VII: DATA LABEL INFORMATION ...................................................................................... 42
SECTION VIII: PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 43
SECTION IX: MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS ............................................. 45
Table of Contents

2 American Dryer Corp. 113386-14
SECTIONI
SAFETYPRECAUTIONS
WARNING:Foryoursafety,theinformationinthismanualmustbefollowedtominimizetherisk
offireorexplosion or to preventpropertydamage,personalinjury, or loss oflife.
WARNING:The dryer must never be operated with any of the back guards, outer tops, or service
panelsremoved. PERSONALINJURYORFIRE COULD RESULT.
WARNING:Failure to properlyinstall,maintain,and/oroperatedryeraccordingtothismanualand
operator’s manuals includedwithdryermayresultinconditions, which cancauseseriousinjury,
deathand/or property damage.
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. 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.
3. 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 ALLoccupants.
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.
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
5. Dryer(s) must be exhausted to the outdoors.
6. Although ADC produces a very versatile dryer, there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
WARNING: Dry onlywater washedfabrics. DO NOTdry articlesspotted orwashed in dry
cleaningsolvents,acombustibledetergent,or “all purpose”cleaner. EXPLOSIONCOULD
RESULT.
WARNING:DONOTdry ragsor articlescoated or contaminatedwith gasoline, kerosene, oil,
paint,or wax. EXPLOSIONCOULDRESULT.
WARNING:Itemsthat have beenspottedor soaked withvegetable or cookingoilconstitute a fire
hazardandshould not beplacedin a tumbledryer.
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WARNING:DONOTdrymop heads. Contamination bywax or flammablesolventswill create a
firehazard.
WARNING:DONOT use heatfor drying articlesthat contain plastic,foam, sponge rubber,or
similarlytexturedrubbermaterials. Drying in a heated basket (tumbler)maydamageplasticsor
rubberand may bea fire hazard.
7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust
ductwork, and inside the dryer. The frequency of inspection and cleaning can best be determined from
experience at each location.
WARNING:Thecollectionoflint in theburnerareaand exhaust ductworkcancreatea potential
firehazard.
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the
National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION, or in Canada, the Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
NOTE:FailuretoelectricallygroundthedryerproperlywillVOIDTHEWARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, heat safety circuits
ever be disabled.
WARNING: PERSONALINJURYORFIRECOULDRESULTSHOULDTHEDRYER
DOORSWITCH, LINTDOOR/DRAWER, ORHEATSAFETYCIRCUITEVER BE
DISABLED.
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
11. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING:Articlesleftinthedryer after the drying and coolingcycleshavebeencompletedcan
createafire hazard.
12. DO NOT operate steam dryers with more than 125 psi (8.62 bar, 862 kPa) steam pressure. Excessive
steam pressure can damage steam coil and/or harm personnel.
13. Replace leaking flexible hoses or other steam fixtures immediately. DO NOT operate the dryer with
leaking flexible hoses. PERSONAL INJURY MAY RESULT.
14. READ AND FOLLOW ALL 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%), 79 lb (35.4 kg) of its rated capacity.
WARNING:YOUMUSTDISCONNECTANDLOCKOUTTHE ELECTRICSUPPLY
ANDTHEGASSUPPLYORTHESTEAM SUPPLYBEFOREANYCOVERSOR
GUARDSAREREMOVED FROMTHEMACHINETOALLOWACCESSFOR
CLEANING,ADJUSTING,INSTALLATION,ORTESTINGOFANYEQUIPMENTPER OSHA
STANDARDS.
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4 American Dryer Corp. 113386-14
IMPORTANT: Dryermustbeinstalledinalocation/environment,whichtheambient
temperatureremains between40ºF (4.44ºC) and 130ºF (54.44º C).
The operation of this appliance may affect the operation of other types of gas appliances, which take their air for
safe combustion from the same room. If in doubt, consult the appliance manufacturer(s).
Use this dryer only for its intended purpose, drying fabrics.
The “Cool Down” Cycle of tumble dryers should be used to reduce the temperature of the items. They should
not be removed from the tumble dryer or piled or stacked while hot.
Fabric softeners or similar products should not be used in a tumble dryer to eliminate the effects of the static
electricity, unless this practice is specifically recommended by the manufacturer of the fabric softener or product.
WARNING:Toreduce the riskofpersonal injury, installlockabledoors to preventpublicaccess to
therear of the dryers.
WARNING: DO NOTUSEORSTORE FLAMMABLE MATERIALSINTHE
APPLIANCESTORAGEDRAWEROR NEARTHISAPPLIANCE.
WARNING: DONOTSPRAYAEROSOLSINTHEVICINITYOFTHISAPPLIANCE
WHILEIT ISIN OPERATION.
WARNING: DONOTMODIFYTHISAPPLIANCE.
Exhaust duct outlet should be checked periodically for blockages, and if any found, removed.
IMPORTANT:Ameansof restraintmustbeused to prevent strainingofthegas supply when the
applianceismoved.
IMPORTANT:An externalmeansofpowerremoval (disconnect device) mustbeprovidedbythe
installer.
CE ONLY
IMPORTANT:Thisappliancemustonlybeinstalledandoperatedinthecountryofdestination
indicatedon the dryer’s data plate. Iftheappliance is tobe installed andoperated in acountry
otherthanthe one indicatedon the data plate,a data plateamendmentmust be obtainedfrom
AmericanDryerCorporation.
WARNING:Thisappliancemust only operate withthegas type indicatedonthe dryer’s data plate.
Iftheapplianceis converted (gastypeischanged), a dataplateamendmentmust be obtained from
AmericanDryerCorporation.
WARNING:This appliance may cause spillage of products of combustion from an open-flue
appliancefittedinthe same room, andthatsuch an appliance shallbetestedfor clearance of
productswiththeappliance in operation andallwindows and doors closed.
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MAXIMUM CAPACITY (DRY WEIGHT) 120 lb 54.43 kg
TUMBLER DIAMETER 44-5/8” 113.35 cm
TUMBLER DEPTH 42-1/8” 107.00 cm
TUMBLER VOLUME 38.10 cu ft 1,078.87 L
TUMBLER/DRIVE MOTOR 3/4 hp 0.56 kW
BLOWER/FAN MOTOR 3 hp 2.24 kW
DOOR OPENING (DIAMETER) 31-3/8” 79.69 cm
DOOR SILL HEIGHT 25-7/8” 65.72 cm
WATER CONNECTION 3/4”-11.5 NH
(North America)
3/4” B.S.P.T. (Outside North America)
DRYERS PER 20’/40’ CONTAINER 3 / 7
DRYERS PER 48’/53’ TRUCK 9 / 10
VOLTAGE AVAILABLE 208-575V 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,440 lb 653.17 kg
APPROXIMATE SHIPPING WEIGHT 1,580 lb 716.67 kg
AIRFLOW 60 Hz 2,150 cfm 60.88 cmm
50 Hz 1,791 cfm 50.71 cmm
HEATINPUT 375,000 Btu/hr 94,498 kcal/hr
EXHAUST CONNECTION (DIAMETER) 14” 35.56 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
INLET PIPE CONNECTION 1” F.N.P.T.
1” F.B.S.P.T.
(CE and Australia Only)
VOLTAGE AVAILABLE 208-575V 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,440 lb 653.17 kg
APPROXIMATE SHIPPING WEIGHT 1,580 lb 716.67 kg
AIRFLOW 60 Hz 2,150 cfm 60.88 cmm
50 Hz 1,791 cfm 50.71 cmm
EXHAUST CONNECTION (DIAMETER) 14” 35.56 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
OVEN SIZE
kW Btu/hr kcal/hr
72 245,700 61,900
75.6 258,000 65,000
VOLTAGE AVAILABLE 208-575V 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,735 lb 786.98 kg
APPROXIMATE SHIPPING WEIGHT 1,875 lb 850.48 kg
AIRFLOW 60 Hz 2,150 cfm 60.88 cmm
50 Hz 1,791 cfm 50.71 cmm
STEAM CONSUMPTION 450 lb/hr 204.12 kg/hr
OPERATING STEAM PRESSURE 125 psi max 8.62 bar, 862 kPa
EXHAUST CONNECTION (DIAMETER) 14” 35.56 cm
COMPRESSED AIR CONNECTION 1/4” Quick Connection
COMPRESSED AIR VOLUME 4.25 cfh 0.12 cmh
BOILER HP (NORMAL LOAD) 13 Bhp
SUPPLYCONNECTION 1-1/4” F.N.P.T.
RETURN CONNECTION 1-1/4” F.N.P.T.
Shaded areas are stated in metric equivalents 5/26/06
* Air-operated steam damper system must be provided with clean, dry, regulated 80 psi +/- 10 psi
(5.51 bar, 551 kPa +/- 0.69 bar, 68.94 kPa) air supply.
NOTE:ADC reservestherighttomakechangesinspecificationsatanytimewithoutnoticeorobligation.
SECTIONII
SPECIFICATIONS/COMPONENTIDENTIFICATION
A. SPECIFICATIONS
Gas
ElectricSteam*

6 American Dryer Corp. 113386-14
NOTE:ADC reservestherighttomakechangesinspecificationsatanytimewithoutnoticeorobligation.
SPECIFICATIONS

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B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1 Microprocessor Control/Keypad PanelAssembly (controls)
2 Control (top access) Door Assembly
3 Main DoorAssembly
4 Lint DoorAssembly
5 Lint Drawer
6 Wire Diagram (located behind control door)
7 Top Console (module)Assembly

8 American Dryer Corp. 113386-14
2. Dryer Rear View
Illus. No. Description
1 Basket (tumbler) Drive Motor Assembly
2 Blower Motor MountAssembly
3 Blower Motor (impellor/fan)Assembly
4 Idler Bearing MountAssembly
5 Basket (tumbler) Bearing Mount Assembly
6* Electric Service Relay Box
7 Heating Unit
8 Data Label and Installation Label
* Electric service connections are made in this box.

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SECTIONIII
INSTALLATIONPROCEDURES
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation mustconformto applicableAmerican National Standards:ANSI Z223.1-
LATEST EDITION (National Fuel Gas Code) orANSI/NFPANO. 70-LATEST EDITION (National Electrical
Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91
(Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and Gas
Plumbing) or Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION (for Electrical
Connections).
A. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 LATEST
EDITION, or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-
M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and
Gas Plumbing).
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:“Thedryermustbeinstalledonnoncombustiblefloorsonly.”
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 mustbe 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. The dryer must be installed with a proper exhaust duct connection to the outside as noted in this manual
(refer to Exhaust Requirements 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: Dryershouldbelocated whereaminimumamount of exhaustductwill be
necessary.
9. The dryer must be installed with adequate clearance for air openings into the combustion chamber.
CAUTION:This dryer producescombustible lint andmustbe exhaustedto the outdoors. Every6
months,inspect theexhaustductingandremove anylintbuildup.
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10 American Dryer Corp. 113386-14
IMPORTANT:Dryermust beinstalled inalocation/environment, whichthe ambient
temperatureremains between40ºF (4.44ºC) and 130ºF (54.44º C).
B. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from dryer.
IMPORTANT:Thedryer mustbetransported andhandledinan upright positionatALLtimes.
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) lag bolts securing the base of the dryer to the wooden skid. Two (2) are
located 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) lag bolts located in the lint chamber area, remove the lint drawer and the three
(3) Phillips head screws securing lint door in place.
1. Leveling Dryer
To level dryer, place 4-inch (10.16 cm) square metal shims (refer to
the illustration on the right) or other suitable material under the
base pads. It is suggested that the dryer be tilted slightly to the rear.
2. If more headroom is needed when moving dryer into position, the top
console (module) may be removed. Use the following instructions to
remove the top console (module).
a. Disconnect the ground wire (A) at the rear upper left hand corner
of dryer.
b. Remove the eight (8) sets of nuts and washers (B) holding the
console (module) to base.
c. Open the control door/control panel and disconnect the white 15-pin plug connector (C) (refer to the
illustration below) located in the base of the control box.
d. Disconnect white plug connector located outside back side of the control box (provides power to heat
circuit).
e. Lift the console (module) off the dryer base.
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WARNING
Anexhaustducttransitionpieceisshippedinsideofthedryer’s
tumbler and must be installed on the dryer’s
exhaust duct, with the hardware provided, BEFORE
locationventingis connectedto thedryer.
THIS EXHAUST DUCT TRANSITION PIECE
MUST BE INSTALLED FIRST!
Failureto observe this installation requirement may result in
damage to the dryer, create a FIRE HAZARD and will VOID
themanufacturer’swarranty.
012999JEV-GS/cj P/N: 114092
3. Exhaust Transition Piece (Gas and Electric Only!)
Inside the basket (tumbler) of this dryer is an exhaust
transition piece that must be installed on the outlet of
the exhaust before any further venting is connected:
a. Remove the exhausttransition piece from the basket
(tumbler) and place it on the exhaust outlet.
b. Using the screws provided, secure the exhaust
transition piece to the dryer.
NOTE:It isrecommendedthatthis joint be
tapedaswell as ALL other ductjointsto prevent
moistureandlintfromescapingintothebuilding.
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12 American Dryer Corp. 113386-14
C. DRYER ENCLOSURE REQUIREMENTS
Even though a 12-inch (30.48 cm) clearance is acceptable, it is recommended that the rear of the dryer be
positioned approximately 2 feet (0.60 meters) from the nearest obstruction (i.e., wall) for ease of installation,
maintenance, and service. Bulkheads and partitions should be made from noncombustible materials. The
clearance between the bulkhead header and the dryer must be a minimum of 4-inches (10.16 cm) and must not
extend more than 4-inches (10.16 cm) to the rear of the dryer front. The bulkhead facing must not be closed
in ALL the way to the top of the dryer. A 2-inch (5.08 cm) clearance is required.
NOTE:Bulkhead facing shouldnotbeinstalled untilafterdryer is inplace. Ceilingarea mustbe
locatedaminimumof12-inches(30.48cm)above the top of the dryer. Eventhoughaminimumof
only12-inches (30.48 cm)isrequired, 18-inches (45.72cm) or moreis suggested, forsteam
dryersandespecially in caseswheresprinkler heads areover the dryers.
NOTE:Whenfire sprinkler systems arelocatedabovethedryers, a minimum of18-inches(45.72
cm)abovethedryerconsole(module) is suggested. Dryers may bepositionedsidewalltosidewall
however, 1or 2-inches(2.54 cm or 5.08 cm) is suggested between dryers(or wall)for easeof
installationandmaintenance. Allowancesmustbemade for the opening and closing ofthecontrolandlint
doors.
IMPORTANT:Make-up air mustbeprovided from asource free ofdrycleaning solvent fumes.
Make-upairthatis contaminated by drycleaningsolventfumeswillresultinirreparabledamageto
themotorsand other dryercomponents.
NOTE:Componentfailureduetodrycleaningsolventfumes willVOIDTHEWARRANTY.
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D. FRESH AIR SUPPLYREQUIREMENTS
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and
exhausts it out of the building. Therefore, the room air mustbecontinually 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.
Air supply (make-up air) must be given careful consideration to ensure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An airflow of 2,150 cfm (cubic feet per minute)
(60.88 cmm [cubic meters per minutes]) must be supplied to each dryer. As a general rule, an unrestricted air
entrance from the outdoors (atmosphere) of a minimum of 3 square feet (0.28 square meters) is required for
each dryer.
To compensate for the use of registers or louvers used over the openings, the area must be increased by
approximately thirty-three percent (33%). Make-up air openings should not be located in an area directly near
where exhaust vents exit the building.
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. The dryer must be installed with provisions for adequate combustion and make-up air supply.
EXAMPLE: For a bank of six (6) gas dryers, two (2) openings measuring 3 feet by 3 feet
(0.91 meters by 0.91 meters) are acceptable.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.

14 American Dryer Corp. 113386-14
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductwork shouldbe 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 basket (tumbler)
hi-heat thermostats. The dryer must be installed with a proper exhaust duct connection to the outside.
CAUTION:This dryer producescombustiblelint and mustbeexhausted totheoutdoors.
CAUTION:IMPROPERLYSIZED ORINSTALLEDEXHAUSTDUCTWORKCAN
CREATEAPOTENTIALFIREHAZARD.
NOTE:This dryer is manufacturedwithabackdraft damper.
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. Single or independent dryer venting is recommended. When
single dryer venting is used, the ductwork from the dryer to the outside exhaust outlet must not exceed 20
feet (6.09 meters). In the case of multiple (common) dryer venting, the distance from the last dryer to the
outside exhaust outlet must not exceed 20 feet (6.09 meters). The shape of the ductwork is not critical
as long as the minimum cross section area is provided. It is suggested that the use of 90º turns in ducting
be avoided; use 30º and/or 45º angles instead. The radius of the elbows should preferably be
1-1/2 times the diameter of the duct. Excluding basket (tumbler) dryer elbow connections or elbows used
for outside protection from the weather, no more than two (2) elbows should be used in the exhaust duct
run. If more than two (2) elbows are used, the cross section area of the ductwork must be increased in
proportion to number of elbows added.
IMPORTANT:Itis recommendedthat exhaust booster fansnot be used in theexhaust ductwork
system.
NOTE:As per theNational Fuel GasCode, “Exhaust ductsfor type 2clothes dryersshallbe
constructedofsheetmetalorothernoncombustiblematerial. Suchductsshallbeequivalent in
strengthandcorrosionresistance to ducts made ofgalvanizedsheetsteel not less than26gauge
(0.0195-inches[0.5mm])thick.”
ALLductwork shouldbe 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 of lint from the ductwork.
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:Exhaustback pressure measuredby a manometerat the dryerexhaust duct area
must be no less than 0 and must not exceed 0.3 in WC (0.75 mb, 75 Pa).
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113386-14 www.amdry.com 15
NOTE:Whentheexhaust ductwork passes through awall,ceiling,orroofmadeofcombustible
materials,theopening must be2-inches (5.08 cm)largerthan the duct(allthe way around). The
ductmustbecenteredwithinthis 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 exhaust 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.
IMPORTANT:DONOT use screens, louvers, or capson theoutside openingof theexhaust
ductwork.
2. Single Dryer Venting
When possible, it is suggested to provide a separate exhaust duct for each dryer. The exhaust duct 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° and/or 45° angles
instead. The shape of the exhaust ductwork is not critical as long as the minimum cross section area is
provided.
IMPORTANT:Minimum ductsizeforagas, electric, or steamdryerwithavertical run and not
morethanthree(3)elbows(including dryer connection and outsideoutlets)is16-inches(40.64cm)
for a round duct or 14-1/2” by 14-1/2” (36.83 cm by 36.83 cm) for a square duct. DUCTSIZE
MUST NOT BE REDUCED ANYWHERE DOWNSTREAM OF DRYER.
IMPORTANT:Exhaust backpressure measured byamanometer at eachbasket(tumbler) exhaust
duct area must be no less than 0 and must not exceed 0.3 in WC (0.75 mb, 75 Pa).
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16 American Dryer Corp. 113386-14
It is suggested that the ductwork from each dryer (minimum 14-inches [35.56 cm]) not exceed 20 feet
(6.09 meters) with no more than three (3) elbows (including dryer connections and outside exhaust outlets).
If the ductwork exceeds 20 feet (6.09 meters) or has numerous elbows, the cross section area of the
ductwork mustbeincreased in proportion to the length and number of elbows in it. In calculating duct size,
the cross section area of a square or rectangular duct must be increased by twenty percent (20%) for
each additional 20 feet (6.09 meters). The diameter of a round exhaust duct should be increased ten
percent (10%) for each additional 15 feet (4.57 meters). Each 14-inch (35.56 cm) 90° elbow is equivalent
to 30 feet (9.14 meters) and each 16-inch (40.64 cm) 90° elbow is equivalent to 36 feet (10.97 meters).
IMPORTANT: For extended ductwork runs, thecross sectionarea ofthe duct can only be
increasedtoan extent. Maximum proportionalductworkruns cannotexceed 20 feet (6.09meters)
morethantheoriginallimitationsof 20 feet (6.09 meters)withtwo(2)elbows. Whenthe
ductworkapproachesthemaximumlimitsasnotedinthismanual,aprofessionalHVACfirmshouldbe
consultedforproperventinginformation.
ALLductwork shouldbe smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be
connected. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the
building. Inspection doors should be installed at strategic points in the exhaust ductwork for periodic
inspection and cleaning of lint from the ductwork.
NOTE:Whentheexhaustductworkpassesthroughawall, ceiling, or roof madeofcombustible
materials,theopening mustbe2-inches(5.08cm) larger than theduct(all the wayaround).The
ductmustbecentered withinthisopening.
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