American Dryer Corp. AD-24 Phase 7 User manual

AD-24 Installation Manual
Phase 7
ADC Part No. 113222-5
American Dryer Corporation
88CurrantRoad
FallRiverMA02720-4781USA
Telephone:[phone]/Fax: [phone]
e-mail:[e-mail]
www.amdry.com
WARNING:Foryoursafetytheinformation
in this manual must be followed to
minimize the risk of fire or explosion and
to prevent property damage, personal
injuryordeath.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinityof this or any otherappliance.
— WHATTODOIFYOU SMELLGAS:
●Donottry to light any appliance.
●Donot touch anyelectricalswitch;
donot useanyphonein your
building.
●Clearthe room, building or areaof
alloccupants.
●Immediatelycall yourgassupplier
fromaneighbor’sphone. Follow
thegassupplier’sinstructions.
●Ifyoucannotreach yourgas
supplier, call the firedepartment.
— Installation and service must be
performedbyaqualifiedinstaller,service
agencyorthe gas supplier.
AVERTISSEMENT:Assurez-vousdebien
suivrelesinstructionsdonnéesdanscette
noticepour réduire au minimum lerisque
d’incendie ou d’explosion ou pour éviter
toutdommagematériel,touteblessureou
lamort.
—Ne pas entreposer ni utiliser d’essence
nid’autresvapeursou liquides
inflammablesàproximitédecet
appareiloudetoutautreappareil.
—QUEFAIRESI VOUS SENTEZ UNE
ODEURDE GAZ:
●Nepastenterd’allumerd’appareils.
●Netouchezàaucun interrupteur. Ne
pasvousservirdestéléphonesse
trouvantdanslebâtiment.
●Évacuezlapièce,lebâtimentoula
zone.
●Appelezimmédiatementvotre
fournisseurde gaz depuisunvoisin.
Suivezlesinstructionsdu fournisseur.
●Sivous ne pouvez rejoindrele
fournisseurde gaz, appelez le service
desincendies.
—L’installation et l’entretien doivent être
assurés par un installateur ou un
service d’entretien qualifié ou par le
fournisseurde gaz.

“IMPORTANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the
instructionstobefollowediftheusersmellsgas. Theseinstructions
mustbeposted in a prominent location near thedryer.
FOR YOUR SAFETY
Do not store or use gasoline
orother flammable vapors
andliquidsin the vicinity of
thisor any other appliance.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
nid’autresvapeursou liquides
inflammablesàproximitédecet
appareiloudetoutautreappareil.
Wehavetriedtomakethis manual as complete as possibleand hopeyouwillfindituseful. Themanufacturer
reserves the right to make changes from time to time, without notice or obligation, in prices, specifications,
colors,and material, andto change ordiscontinue models. The illustrationsincluded in this manual maynot
depict your particular dryer exactly.
IMPORTANT
For your convenience, log the following information:
DATEOFPURCHASE __________________________________________________ MODELNO. _____________________
RESELLER’SNAME ___________________________________________________________________________________
SERIALNUMBER(S) ___________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Replacement parts can be obtained from your reseller or theADC factory. When ordering replacement parts
from the factory, you can FAX your order toADC 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.
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.
AD-24 Phase 7

WARNING
UNDER NO CIRCUMSTANCES should the dryer door switch, lint door switch, or
heat safety circuit ever be disabled.
IMPORTANT
YOUMUSTDISCONNECTANDLOCKOUTTHEELECTRICSUPPLYANDTHEGAS
SUPPLY OR THE STEAM SUPPLY BEFORE ANY COVERS OR GUARDS ARE
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING,
ADJUSTING, INSTALLATION, OR TESTING OFANY EQUIPMENT PER OSHA
(OccupationalSafetyand HealthAdministration)STANDARDS.
WARNING
CHILDRENSHOULD NOTBEALLOWEDTOPLAYONORNEARTHEDRYER(S).
CHILDRENSHOULDBESUPERVISEDIFNEARDRYERSINOPERATION.
CAUTION
DRYERSSHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION.
FORYOURSAFETY
DONOTDRYMOPHEADSINTHEDRYER.
DONOTUSEDRYERINTHEPRESENCE OFDRYCLEANINGFUMES.
“Caution:Label allwires prior to
disconnection when servicing
controls.Wiring errors can cause
improper operation.”
«Attention:Aumomentde l’entretiendes commandes,
étiquetez tous les fils avant de les débrancher. Des
erreursdecâblagepeuvententraînerun fonctionnement
inadéquatetdangereux.»
Proposition65
Useof thisproduct couldexposeyou tosubstances fromfuelcombustion
thatcontainchemicalsknowntotheStateof Californiato causecancer,
birthdefectsandotherreproductiveharm.
▲ WARNING
!

WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panelsremoved. PERSONALINJURYORFIRECOULDRESULT.
IMPORTANT
PLEASEOBSERVEALLSAFETYPRECAUTIONSdisplayedontheequipmentand/or
specified in the installation manual included with the dryer.
WARNING
DRYERMUST NEVERBE OPERATEDWITHOUTTHELINTFILTER/SCREENIN
PLACE,EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED.
Dryer mustnot be installed or stored in an area where it willbe 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).

Table of Contents
SECTION I
SAFETYPRECAUTIONS .......................................................................................... 3
SECTION II
SPECIFICATIONS...................................................................................................... 5
SECTION III
INSTALLATIONPROCEDURES.............................................................................. 7
A. Unpacking/SettingUp ................................................................................................................. 7
B. LocationoftheDryer.................................................................................................................. 7
C. DryerEnclosureRequirements .................................................................................................... 8
D. FreshAirSupply Requirements ................................................................................................... 9
E. ExhaustRequirements ............................................................................................................... 10
F. ElectricalInformation ................................................................................................................ 16
G. GasInformation ........................................................................................................................ 21
H. PreparationforOperation/Start-Up........................................................................................... 24
I. PreoperationalTests ................................................................................................................. 24
J. PreoperationalInstructions ........................................................................................................ 26
K. ShutdownInstructions............................................................................................................... 28
SECTION IV
SERVICE/PARTSINFORMATION ........................................................................ 29
A. Service ..................................................................................................................................... 29
B. Parts ........................................................................................................................................ 29
SECTION V
WARRANTYINFORMATION ................................................................................30
A. ReturningWarrantyCards......................................................................................................... 30
B. Warranty .................................................................................................................................. 30
C. ReturningWarrantyParts .......................................................................................................... 30

SECTION VI
ROUTINE MAINTENANCE ...................................................................................32
A. Cleaning ................................................................................................................................... 32
B. Adjustments ............................................................................................................................. 33
C. Lubrication ............................................................................................................................... 33
SECTIONVII
DATA LABEL INFORMATION .............................................................................34
SECTIONVIII
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS................................................................36
SECTION IX
SENSOR ACTIVATED FIRE EXTINGUISHING (S.A.F.E.) SYSTEM ...........39

113222-5 www.amdry.com 3
SECTIONI
SAFETYPRECAUTIONS
WARNING: Foryoursafety,theinformation inthismanualmustbefollowedto minimizetheriskof
fireor explosionortopreventpropertydamage,personalinjury,orloss oflife.
WARNING: The dryer must neverbeoperated with any of thebackguards, outer tops, or
servicepanelsremoved.PERSONALINJURYORFIRE COULDRESULT.
A. Keep dryer area clear and free from combustible materials, gasoline, and other flammable vapors andliquids.
B. 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.
C. WHAT TO DO IFYOU SMELLGAS:
1. DONOT try to light any appliance.
2. DONOTtouch any electrical switch.
3. DONOT use any phone in your building.
4. Clear the room, building, or area of ALLoccupants.
5. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
6. If you cannot reach your gas supplier, call the fire department.
D. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
E. Dryer(s) must be exhausted to the outdoors.
F. 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 only water washedfabrics. DO NOTdry articlesspotted or washed in dry
cleaningsolvents,acombustible detergent,or“allpurpose”cleaner.
EXPLOSIONCOULDRESULT.
WARNING: DONOTdry rags orarticlescoated or contaminatedwith gasoline, kerosene,oil, paint,
orwax.
EXPLOSIONCOULDRESULT.
WARNING: DONOTdry mop heads. Contaminationby waxor flammable solventswill createa
firehazard.

4 American Dryer Corp. 113222-5
WARNING: DO NOTuse heatfor dryingarticlesthat containplastic, foam, spongerubber,or
similarly textured materials. Drying in a heated basket (tumbler) may damage
plastics or rubber and may be a fire hazard.
G. 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: The collectionof lintin theburner areaandexhaust ductworkcan createa potentialfire
hazard.
H. 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: Failuretoelectricallyground dryerproperlywillVOIDTHEWARRANTY.
I. UNDER NO CIRCUMSTANCES should the dryer door switch, lint door switch, or heat safety circuit
ever be disabled.
WARNING: PERSONALINJURYORFIRECOULDRESULTshould thedryer door switch,
lintdoor switch,or heatsafety circuitever bedisabled.
J. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
K. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articles leftinthe dryerafter thedryingand coolingcycleshave beencompletedcan
createa firehazard.
CAUTION: LabelALLwires priortodisconnectionwhen servicingcontrols. Wiringerrors cause
improperanddangerous operation. Verifyproper operationafter servicing.
L. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
M. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%), 13 lb (5.89 kg) of its rated capacity.
WARNING: YOU MUSTDISCONNECTANDLOCKOUTTHEELECTRICSUPPLY
ANDTHEGASSUPPLYBEFOREANYCOVERS OR GUARDSARE
REMOVEDFROMTHEMACHINETOALLOWACCESS FOR CLEANING,
ADJUSTING,INSTALLATION,ORTESTINGOFANYEQUIPMENTPER
OSHA(OccupationalSafetyandHealthAdministration)STANDARDS.
IMPORTANT: Dryer must beinstalledinalocation/environment, which theambient
temperatureremainsbetween40ºF(4.44ºC)and130º F (54.44º C).

113222-5 www.amdry.com 5
SECTIONII
SPECIFICATIONS
Electric Gas
MAXIMUM CAPACITY(DRYWEIGHT) 20 lb 9.07 kg
TUMBLER DIAMETER 27-1/4” 69.22 cm
TUMBLER DEPTH 24” 60.96 cm
TUMBLER VOLUME 8.10 cu ft 229.37 L
TUMBLER/DRIVE MOTOR 1/2 hp 0.37 kW
BLOWER/FAN MOTOR N / A
DOOR OPENING (DIAMETER) 21-1/2” 54.61 cm
DOORSILLHEIGHT 28-1/3” 71.91 cm
WATER CONNECTION*3/4” F.N.P.T.
DRYERS PER 20’/40’ CONTAINER 14 / 30
DRYERS PER 48’/53’ TRUCK 42 / 47
VOLTAGE AVAILABLE 120-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 426 lb 193.23 kg
APPROXIMATE SHIPPING WEIGHT 461 lb 209.11 kg
AIRFLOW 60 Hz 400 cfm 11.33 cmm
50 Hz 333 cfm 9.44 cmm
HEATINPUT 60,000 Btu/hr 15,120 kcal/hr
EXHAUST CONNECTION (DIAMETER) 6” 15.24 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
INLET PIPE CONNECTION 1/2” M.N.P.T.
VOLTAGE AVAILABLE 208-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 426 lb 193.23 kg
APPROXIMATE SHIPPING WEIGHT 461 lb 209.11 kg
AIRFLOW 60 Hz 400 cfm 11.33 cmm
50 Hz 333 cfm 9.44 cmm
EXHAUST CONNECTION (DIAMETER) 6” 15.24 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
OVEN SIZE
kW Btu/hr kcal/hr
18 61,400 15,500
20 68,200 17,200
24 81,900 20,600
VOLTAGE AVAILABLE
N / A
APPROXIMATE NET WEIGHT
APPROXIMATE SHIPPING WEIGHT
AIRFLOW 60 Hz
50 Hz
STEAM CONSUMPTION
OPERATING STEAM PRESSURE
EXHAUST CONNECTION (DIAMETER)
COMPRESSED AIR CONNECTION
COMPRESSED AIR VOLUME
BOILER HORSEPOWER (NORMAL LOAD)
SUPPLYCONNECTION
RETURN CONNECTION
Shaded areas are stated in metric equivalents 10/04/06
* Water supply must be 40 psi +/- 20 psi (2.75 bar +/- 1.37 bar) for fire suppression system to operate properly.
NOTE: ADCreservesthe righttomake changesinspecifications atany timewithoutnotice or
obligation.
Steam

6 American Dryer Corp. 113222-5
Specifications
NOTE: ADCreservesthe righttomake changesinspecifications atany timewithoutnotice or
obligation.

113222-5 www.amdry.com 7
SECTIONIII
INSTALLATION PROCEDURES
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) or ANSI/NFPANO. 70-LATEST EDITION (National Electrical
Code) or in Canada, the installation must conform to Canadian Standards: CAN/CGA-B149.1-M91 (Natural
Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [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. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from 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. Once the bolts are removed, slide
the dryer off the skid.
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. The dryer is equipped with four (4)
leveling legs, one (1) at each corner of the dryer base. Two (2) are located at the rear of the dryer base, and two
(2) are located in the lint chamber.
To increase bearing life and improve efficiency, the dryer should be tilted slightly to the rear.
B. LOCATION OF THE DRYER
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codesorordinancesthelocationmust conform with the National Fuel Gas CodeANSI.Z223.1LATESTEDITION,
or in Canada, the installation mustconformto 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: “The dryermustbeinstalledonnoncombustible floorsonly.”
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 noncombustible construction as noted in this manual (refer to
Dryer Enclosure Requirements in Section C).

8 American Dryer Corp. 113222-5
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 in an area where correct exhaust venting can be achieved 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 shouldbelocatedwhere a minimumamount ofexhaust ductwillbe 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: Thisdryer produces combustiblelint and mustbeexhaustedto the outdoors. Every6
months, inspect the exhaust ducting and remove any lint buildup.
IMPORTANT: Dryer must beinstalledinalocation/environment, which theambient
temperatureremainsbetween40ºF(4.44ºC)and130º F (54.44º C).
C. DRYERENCLOSUREREQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of
12-inches (30.48 cm), 18-inches (45.72 cm) or more is recommended for ease of installation, maintenance, and
service, above the dryer outer top, except along the front of the dryer, which may be closed in if desired. 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 front.
NOTE: Allowancesmustbemadefor opening thecontrol door.
IMPORTANT: If thedryer isinstalled ina closettype enclosurethere mustbenoother fuelburning
applianceinstalledinthesamecloset.
Dryers may be positioned sidewall to sidewall. However, a 1/16” (1.5875 mm) minimum allowance must be
made for opening and closing of the control door and the lint 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 below for details.
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease of maintenance.

113222-5 www.amdry.com 9
NOTE: Airconsiderationsare importantforproper andefficientoperation.
D. FRESH AIR SUPPLYREQUIREMENTS
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 400 cfm (cubic feet per minute)
(11.3 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 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 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. The
dryer mustbeinstalled 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) are acceptable.
IMPORTANT: Make-up air openings shouldnot be located in anarea directly near where exhaust
ventsexitthebuilding.
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 airmustbeprovidedfrom asource free ofdry cleaningsolvent fumes.
Make-upairthatiscontaminatedbydry cleaningsolventfumeswillresultin
irreparabledamage tothe motors andother dryer components.
NOTE: Componentfailureduetodry cleaningsolventfumeswillVOIDTHEWARRANTY.

10 American Dryer Corp. 113222-5
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, overheating of the dryer,
andshutdown of the burner by theairflow (sail) switches, burner hi-limits, orbasket (tumbler) hi-limit thermostats.
(Refer to the illustrationson page 11and page 12 for details.) The dryer mustbeinstalled with a proper exhaust
duct connection to the outside.
CAUTION: Thisdryer producescombustible lint andmustbeexhausted totheoutdoors.
CAUTION: IMPROPERLYSIZED ORINSTALLEDEXHAUSTDUCTWORK CAN
CREATEAPOTENTIALFIREHAZARD.
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 90º right-angle turns in ducting; use 30º or 45º angles instead. The
radius of the elbows should preferably be 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 page 11and page 12. 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 180º 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
smoothinsidewithno projections from sheetmetalscrewsorotherobstructions, which willcollectlint. 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
mustbeno less than 0 and mustnotexceed0.3 inches (0.74 mb) of water column
(W.C.).
NOTE: Whentheexhaust ductworkpasses throughawall, ceiling,or roofmadeof combustible
materials,the openingmust be2-inches (5.08cm) larger thanthe duct(all the wayaround).
Theductmustbecenteredwithinthis opening.
IMPORTANT: The dryerexhaust ductmustnotbe connected toany gasvent, chimney,wall,ceiling,
orconcealingspaceof abuilding.
IMPORTANT: It is recommended that exhaust or boosterfans not be usedin the exhaust ductwork
system.
NOTE: Asper the NationalFuel Gas Code, “Exhaustducts for type2 clothes dryers shallbe
constructedofsheetmetalorothernoncombustible material. Suchductsshall beequivalentin
strengthand corrosionresistance toducts madeof galvanizedsheet steelnot lessthan 26
gauge(0.0195-inches[0.50 mm])thick.”

113222-5 www.amdry.com 11
SINGLEDRYERVENTING
IMPORTANT: A minimumexhaust ductsize of6-inches (15.24cm)must beused.
For a 6-inch (15.24 cm) horizontal run where a maximum of one (1) elbow is used (refer to the illustration
below), the ductwork from the dryer outlet must not exceed 8 feet (2.44 meters).
If the length of the duct 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, thecross section area of theductwork can only be
increasedtoan extent. Whenthe ductworkapproachesthe maximumlimitsnotedin
this manual, a professional heating, ventilating, and air-conditioning (HVAC) firm
shouldbe consulted for proper venting information.
When single 6-inch (15.24 cm) venting is used, for a horizontal run, the ductwork from the dryer to the outside
outlet cannot exceed 8 feet (2.44 meters) in total length. This calculation of 8 feet (2.44 meters) compensates
or allows for the use of a maximum of one (1) elbow (which is the outside outlet protection). Refer to the
illustration above.

12 American Dryer Corp. 113222-5
SINGLEDRYERVENTING
IMPORTANT: A minimumexhaust ductsize of8-inches (20.32cm)must beused.
For an 8-inch (20.32 cm) horizontal run where a maximum of one (1) elbow is used (refer to the illustration
below), the ductwork from the dryer outlet must not exceed 40 feet (12.2 meters).
If the length of the duct 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, thecross section area of theductwork can only be
increasedtoan extent. Whenthe ductworkapproachesthe maximumlimitsnotedin
this manual, a professional heating, ventilating, and air-conditioning (HVAC) firm
shouldbe consulted for proper venting information.
When single 8-inch (20.32 cm) venting is used, for a horizontal run, the ductwork from the dryer to the outside
outlet cannot exceed 40 feet (12.2 meters) in total length. This calculation of 40 feet (12.2 meters) compensates
or allows for the use of a maximum of one (1) elbow (which is the outside outlet protection). Refer to the
illustration above.

113222-5 www.amdry.com 13
When single 8-inch (20.32 cm) vertical venting is used (refer to the illustration below), the ductwork from the
dryer to the outside outlet cannotexceed 35 feet (10.67 meters) in total length. This calculation of 35 feet (10.67
meters)compensates or allows for the useof a maximum of three (3)elbows including the 180º (turned downward)
outsideoutlet.

14 American Dryer Corp. 113222-5

113222-5 www.amdry.com 15
IMPORTANT: For extended ductwork runs, thecross section area of theductwork can only be
increasedtoan extent. Whenthe ductworkapproaches themaximum limitsas noted
in this manual, a professional heating, ventilating, and air-conditioning (HVAC)
firm should be consulted for proper venting information.
IMPORTANTVENTINGREMINDERS
1. Ductwork size and installation should be done by a qualified professional.
2. The dryer must be exhausted to the outdoors.
3. The dryer exhaust must not be connected into any gas vent, chimney, wall, ceiling, or concealing space of
abuilding.
4. Ductwork should be routed as short as possible to the outdoors with as few elbows as possible.
5. Avoid 90º turns, use 30º or 45º turns instead.
6. The inside of the ductwork should be as smooth as possible with no projections from sheet metal screws.
7. ALL ducts should be taped to prevent moisture and lint from escaping into the building.
8. Inspection or clean out doors should be installed throughout strategic points in the ductwork for periodic
inspection and cleaning.
9. Whenever the ductwork passes through 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.
10. The outside of the ductwork must be protected from the weather. A 90º elbow must be used for a
horizontal run and when vertically through a roof by using a 180º turn to point the opening downward. The
distance between the exhaust duct and the nearest obstruction (i.e., roof or ground) must be twice the
diameter of the duct.
11. DO NOT use screens, louvers, or caps on the outside opening of the exhaust ductwork.
12. 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 inches (0.74 mb) of water column (W.C.).
IMPORTANT: It is recommended that exhaust or boosterfans not be usedin the exhaust ductwork
system.

16 American Dryer Corp. 113222-5
F. ELECTRICAL INFORMATION
1. ElectricalRequirements
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 and state regulations or codes.
In the absence of such codes, ALL electrical connections, materials, and workmanship must conform to
the applicable requirements of the National Electrical CodeANSI/NFPANO. 70-LATEST EDITION or in
Canada, the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
IMPORTANT: Failure to comply with these codes or ordinances, and/or the requirements
stipulated in this manual can result in personal injury or component failure.
NOTE: Component failure due to improper installation willVOIDTHEWARRANTY.
Each dryer shouldbeconnected to an independently protected branch circuit. The dryer mustbeconnected
with copper wire only. DO NOT use aluminum wire, which could cause a fire hazard. The copper
conductorwire/cablemustbe of properampacity and insulation in accordance with electriccodes for making
ALLservice connections.
NOTE: The use of aluminum wire will VOIDTHEWARRANTY.
IMPORTANT: A separate protected circuit must be provided to each dryer.
NOTE: An individual ground circuit must be provided to each dryer, do not daisy chain.
IMPORTANT: The dryer must be connected to the electric supply shown on the data label. In
thecase of 208VAC or 240VAC, thesupply voltage must matchthe electric service
specificationsofthe datalabel exactly.
IMPORTANT: The wire size must be properly sized to handle the related current.
WARNING: 208VACAND240VACARENOT THE SAME. Any damage done to dryer
componentsduetoimpropervoltageconnectionswill automaticallyVOID THE
WARRANTY.
NOTE: Component failure due to improper voltage application willVOIDTHE WARRANTY.
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.