American Dryer Corp. AD-115ES II User manual

AD-115ES II
Installation Manual
For replacement parts, contact the reseller from which the dryer
was purchased or
AmericanDryerCorporation
88Currant Road
FallRiverMA02720-4781
Telephone:[phone] / Fax:[phone]
E-mail:[e-mail]
www.amdry.com
062800JEV/tcosta ADCPartNo.113155
WARNING: Foryoursafetytheinformationin
thismanual mustbe followedto minimizethe
riskof fireor explosionor toprevent property
damage,personalinjury or death.
— Donot storeoruse gasolineor other flammable
vapors and liquids in the vicinity of this or any
otherappliance.
— WHATTODO IFYOU SMELLGAS:
• Donottryto lightany appliance.
• Donottouch anyelectricalswitch;do not
useanyphoneinyourbuilding.
• Cleartheroom, building orareaofall
occupants.
• Immediatelycallyourgassupplierfroma
neighbor’s phone. Followthe gassupplier’s
instructions.
• Ifyoucannotreach yourgas supplier,call
thefiredepartment.
— Installationand servicemustbe performedby a
qualified installer, service agency or the gas
supplier.
AVERTISSEMENT: Assurez-vous de bien
suivrelesinstructionsdonnéesdanscettenotice
pourréduire auminimumle risqued’incendie
ou d’explosion ou pour éviter tout dommage
matériel,touteblessureou lamort.
— Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.
— QUEFAIRESIVOUSSENTEZUNEODEUR
DEGAZ:
• Nepastenter d’allumerd’appareils.
• Netouchez àaucun interrupteur. Nepas
vousservirdes téléphonessetrouvant dans
lebâtiment.
• Évacuezlapièce,le bâtimentoulazone.
• Appelezimmédiatementvotrefournisseur
degazdepuisunvoisin. Suivezles
instructionsdufournisseur.
• Sivousnepouvezrejoindrelefournisseur
degaz,appelez leservicedes incendies.
— L’installationetl’entretiendoiventêtreassuréspar
uninstallateurou unserviced’entretienqualifié
ouparle fournisseurdegaz.

Retain This Manual In ASafe 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.
AD-115ES II
“IMPORTANTNOTETOPURCHASER”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobefollowed iftheusersmells gas. Theseinstructionsmustbeposted ina
prominentlocationnearthedryer.
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:
DATEOFPURCHASE________________________________ MODELNO. __________________________________________
RESELLER’SNAME ________________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADCfactory. When orderingreplacement partsfrom thefactory,
you can FAX your order to ADC at [phone] or telephone your order directly to the ADC Parts Department at (508)
678-9000. Pleasespecify the dryermodel numberand serial numberin addition to thedescriptionand partnumber,sothat
your order is processed accurately and promptly.
FORYOUR SAFETY
Donot storeor usegasoline or
otherflammablevaporsand
liquidsinthevicinityofthisor
anyotherappliance.
POURVOTRESÉCURITÉ
Nepas entreposer niutiliserd’essence
nid’autresvapeursouliquides
inflammablesàproximitédecet
appareilou detoutautre appareil.

WARNING
UNDERNO CIRCUMSTANCESshouldthedryerdoorswitch,lint doorswitch,orthe
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.
DONOTUSEDRYERINTHEPRESENCEOFDRYCLEANINGFUMES.
“Caution: Label all wires prior to
disconnection when servicing controls. Wiring
errors can cause improper operation.”
«Attention: Au moment de l’entretien des
commandes,étiqueteztous les filsavantde
les débrancher. Des erreurs de câblage
peuvent entraîner un fonctionnement
inadéquatetdangereux.»

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
DRYERMUSTNEVERBEOPERATEDWITHOUTTHELINTFILTER/SCREENIN
PLACE,EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED.
Dryer mustnotbe 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
IMPORTANT INFORMATION ...............................................................................3
A. ReceivingandHandling ............................................................................................................... 3
B. SafetyPrecautions ...................................................................................................................... 4
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION.....................................6
A. Specifications ............................................................................................................................. 6
B. ComponentIdentification ............................................................................................................ 8
SECTION III
INSTALLATION PROCEDURES .........................................................................10
A. LocationRequirements ............................................................................................................. 10
B. Unpacking andSettingUp ........................................................................................................ 11
C. DryerEnclosureRequirements .................................................................................................. 14
D. FreshAirSupplyRequirements ................................................................................................. 15
E. ExhaustRequirements ............................................................................................................... 16
F. ElectricalInformation ................................................................................................................ 24
G. GasInformation ........................................................................................................................ 30
H. SteamInformation .................................................................................................................... 34
I. Preparation ForOperation andStart-Up ................................................................................... 38
J. PreoperationalTests ................................................................................................................. 39
K. ShutdownInstructions............................................................................................................... 41
SECTION IV
SERVICE/PARTS INFORMATION ......................................................................42
A. Service ..................................................................................................................................... 42
B. Parts ........................................................................................................................................ 42
SECTION V
WARRANTY INFORMATION...............................................................................43
A. ReturningWarrantyCards......................................................................................................... 43
B. Warranty .................................................................................................................................. 43
C. ReturningWarrantyParts .......................................................................................................... 43

SECTION VI
ROUTINE MAINTENANCE ..................................................................................45
A. Cleaning ................................................................................................................................... 45
B. Adjustments ............................................................................................................................. 47
C. Lubrication ............................................................................................................................... 47
SECTION VII
TROUBLESHOOTING ...........................................................................................48
SECTION VIII
DATA LABEL INFORMATION .............................................................................55
A. DataLabel ............................................................................................................................... 55
SECTION IX
REVERSING TIMER SPIN/DWELL ADJUSTMENTS.....................................57
SECTION X
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS........................................................................................................58
SECTION XI
BURNER AND BASKET (TUMBLER)/LINT CHAMBER
MANUAL RESET HI-LIMIT INSTRUCTIONS..................................................61
GasModelsOnly ........................................................................................................................... 61
ElectricorSteam Models Only ....................................................................................................... 62

3
SECTIONI
IMPORTANTINFORMATION
A. RECEIVINGAND 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/or 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
deliveringcarrier’sfreightterminal immediately andfilea claim. The freightcompanyconsiders 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, and ALL 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 (508)
678-9000.
IMPORTANT: Thedryer mustbetransportedandhandledin anuprightposition at ALLtimes.

4
B. SAFETY PRECAUTIONS
WARNING: Foryoursafety,theinformationinthismanualmustbefollowed to minimizetherisk of
fireorexplosion ortopreventproperty damage,personalinjury,or loss oflife.
WARNING: Thedryermust never beoperated with anyofthe backguards,outer tops,or
servicepanelsremoved. PERSONALINJURYORFIRE COULDRESULT.
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. Purchaser and 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 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.
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
5. Dryers 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 only water washed fabrics. DONOTdryarticles spottedor washedin dry
cleaningsolvents,acombustibledetergent,or“allpurpose”cleaner.
EXPLOSIONCOULDRESULT.
WARNING: DONOT dry rags orarticles coatedorcontaminated withgasoline, kerosene, oil,paint,
or wax.
EXPLOSIONCOULDRESULT.
WARNING: DONOTdrymopheads. Contamination bywaxor flammablesolventswill createa
firehazard.
WARNING: DONOT useheat for dryingarticles thatcontainplastic, foam,spongerubber, or
similarlytexturedrubbermaterials. Dryinginaheatedbasket (tumbler) maydamage
plasticsor rubberandmay bea firehazard.

5
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: The collectionoflintinthe burnerareaandexhaust ductworkcancreateapotential fire
hazard.
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: Failureto dosowillVOIDTHEWARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint door switch, or the heat safety
circuit ever be disabled.
WARNING: PERSONALINJURYOR FIRECOULD RESULT.
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: Articles leftin thedryerafterthedryingand coolingcycles havebeencompletedcan
createa firehazard.
12. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
13. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%), 75 lbs (34 kg) of its rated capacity.
WARNING: YOUMUSTDISCONNECTANDLOCKOUTTHEELECTRIC SUPPLYAND
THEGASSUPPLYORTHE STEAMSUPPLYBEFOREANYCOVERSOR
GUARDSAREREMOVEDFROMTHE MACHINETOALLOWACCESS
FORCLEANING,ADJUSTING, INSTALLATION,ORTESTINGOFANY
EQUIPMENTPEROSHA(OccupationalSafetyandHealthAdministration)
STANDARD.
IMPORTANT: Dryermustbeinstalledinalocation/environment,which theambient
temperatureremains between40ºF (4.44ºC)and 130ºF (54.44ºC).

6
SECTIONII
SPECIFICATIONS/COMPONENTIDENTIFICATION
A. SPECIFICATIONS
* Refer to the Electrical Service Specification chart on page 25 for detailed electrical information.
** Refer to the Electrical Service Specification chart on page 26 (60 Kw oven), page 27 (72 Kw oven).
IMPORTANT: Steam dryers mustbe provided with a clean, dry, regulated 80 PSI ± 10 PSI (5.51
bar ± 0.69 bar) air supply.
NOTE: ADCreserves therighttomakechanges inspecifications atanytimewithoutnotice or
obligation.
GasElectric
Steam
MAXIMUM CAPACITY (DRY WEIGHT) 115 lbs 52.2 kg
BASKET (TUMBLER) DIAMETER 42” 106.7 cm
BASKET (TUMBLER) DEPTH 42” 106.7 cm
BASKET
(TUMBLER) MOTOR 3/4 HP 0.560 kw
BLOWER MOTOR 3 HP 2.239 kw
DOOR OPENING
(DIAMETER) 31-3/8” 79.7 cm
BASKET (TUMBLER) VOLUME 33.7 cu. ft. 0.98 cu.m.
DRYERS PER 20’/40’ CONTAINER 4/8
DRYERS PER 45’/48’ TRUCK 9/10
VOLTAGE AVAILABLE 120-575v 1ø - 3ø 3, 4w 50/60 Hz
APPROX. WEIGHT (UNCRATED) 1,260 lbs 572 kg
APPROX. WEIGHT (CRATED) 1,400 lbs 635 kg
HEAT INPUT 343,000 btuh 86,436 kcal/hr
AIRFLOW 2,100 cfm 59.5 cmm
INLET PIPE CONNECTION 1” F.P.T.
OVEN SIZE
KW BTUH
(60
H Z )KCAL/HR
(50 Hz)
60 205,000 51,600
72 246,000 61,900
APPLIED VOLTAGE/PHASE/APPROX. AMP DRAW**
KW 208/3ø 240/3ø 380/3ø 416/3ø 460/3ø 575/3ø
60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz
60 178 -- 157 161 -- 99 -- 92 82 -- 68 --
72 212 -- 186 189 -- 117 -- 108 97 -- 80 --
VOLTAGE AVAILABLE* 208-575v 3ø 3, 4w 50/60 Hz
APPROX. WEIGHT
(UNCRATED) 1,735 lbs 787 kg
APPROX. WEIGHT (CRATED) 1,875 lbs 850.5 kg
AIRFLOW 2,100 cfm 59.5 cmm
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
AIR CONNECTION 1/8” F.P.T.
STEAM CONSUMPTION BOILER HP NORMAL LOAD
375 lbs/hr 170.1 kg/hr 11
OPERATING PRESSURE *SUPPLY CONNECTION RETURN CONNECTION
125 PSI max 8.6 bar 1-1/4” F.P.T. 1-1/4” F.P.T.
Shaded areas are stated in metric equivalents

7
NOTE: ADCreserves therighttomakechanges inspecifications atanytimewithoutnotice or
obligation.
Specifications
ADG-115ESII(Gas)
ADE-115ES II (Electric)
ADS-115ES II (Steam)

8
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1 Microprocessor Control and Keyboard (touch pad) Panel Assembly (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

9
2. Dryer Rear View
Illus. No. Description
1 Basket (tumbler) Drive MotorAssembly
2 Blower Motor MountAssembly
3 Impellor (fan/blower)Assembly
4 Idler Bearing MountAssembly
5 Basket (tumbler) Bearing MountAssembly
6* Electric Service Relay Box
7 Heating Unit
8 Data Label and Installation Label
* Electric service connections are made in this box.

10
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 mustconform to applicableAmerican National Standards:ANSI Z223.1-
LATEST EDITION (National Fuel Gas Code) orANSI/NFPA NO. 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 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 & 2 CSAC22.1-1990 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
codesorordinances the location mustconformwiththeNationalFuel 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: “Thedryermustbeinstalledon noncombustible floorsonly.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. This 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: Dryershouldbelocatedwhere aminimumamountof exhaustductwillbe 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.

11
CAUTION: Thisdryer producescombustiblelint andmustbeexhausted tothe outdoors. Every6
months,inspecttheexhaustductingandremoveanylintbuildup.
IMPORTANT: Dryermustbeinstalledinalocation/environment,which theambient
temperatureremains between40ºF (4.44ºC)and 130ºF (54.44ºC).
B. UNPACKING AND SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryermustbetransported andhandledinan uprightpositionatALLtimes.
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 two (2)
Phillips head screws securing the lint door in place.
NOTE: Lintdoor cannotberemoved totallyfrom dryer dueto asafetychain. The chainissecured to
thedryer anddoor withspecial tamperproofscrews. The safety chainmustnotberemoved
orcut fromthelint door. Once these lagbolts areoff,removethe eight(8)nuts andbolts
holdingthe skidtogether and takethe skidapart. The dryer cannow beremovedfrom the
skidand setintoplace.
1. Leveling Dryer
a. To level dryer, place 4-inch (10.16 cm) square metal shims (refer to the illustration above) or other
suitable material under the base pads. It is suggested that the dryer be tilted slightly to the rear.

12
2. The V-belts are disconnected from the basket drive motor for shipping. Reconnect V-belts before starting
the dryer.
a. To reconnect V-belts
1) Remove hardware holding back (belt) guard and remove guard from dryer.
2) Lay one (1) belt into motor sheave (pulley) groove and wind belt into corresponding groove of the
idler pulley by rotating the idler pulley by hand. Rotate the idler pulley an extra turn or two (2) to
insure that the belt is tracking properly in the motor sheave (pulley) and idler pulley grooves without
twisting.
3) Repeat procedure to reconnect the remaining belt.
4) Replace back (belt) guard and hardware.
3. If more headroom is needed when moving dryer into position, the top console (module) may be removed.
a. To remove top console (module)
1) Disconnect the ground wire (A) at the rear upper left hand corner of dryer.
2) Remove the eight (8) sets of nuts and washers (B) holding the console (module) to base.
3) Open the control door and control panel, and disconnect the white 15-pin plug connector (C) located
in the base of the control box.
4) Disconnect white plug connector located outside backside of the control box (provides power to
heat circuit).
5) Lift the console (module) off of the dryer base.
IMPORTANT: Thedryer mustbetransported and handledinan upright positionatALLtimes.

13
4. Exhaust Transition Piece
a. Inside the basket (tumbler) of this dryer is an
exhaust transition piece that must be installed on
theoutlet of the exhaust before any further venting
is connected:
1) Remove the exhaust transition piece from the
basket (tumbler) and place it on the exhaust
outlet.
2) Using the screws provided, secure the exhaust
transition piece to the dryer.
NOTE: Itis recommended thatthis jointbe taped
aswellas ALLotherduct jointstoprevent
moistureandlintfromescaping intothe
building.
WARNING
Anexhaustducttransitionpieceisshippedinsideofthedryer’s
tumbler and MUST be installed on the dryer’s
exhaust duct, with the hardware provided, BEFORE
locationventingisconnected to thedryer.
THIS EXHAUST DUCT TRANSITION PIECE
MUST BE INSTALLED FIRST!
Failureto observethis installationrequirement mayresult in
damage to the dryer, create a FIRE HAZARD and will VOID
themanufacturer’swarranty.
012999JEV-GS/cj P/N: 114092

14
C. DRYER ENCLOSURE REQUIREMENTS
It is recommended that the rear of the dryer be positioned approximately 3 feet (0.91 meters) from the nearest
obstruction (i.e., wall) for ease of installation, maintenance, and service. Bulkheads and partitions should be
made of noncombustible materials. 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: Bulkheadfacing shouldnotbeinstalleduntilafter dryerisin place. Ceiling areamustbe
located aminimum of12-inches (30.48 cm)above the topof thedryer.
IMPORTANT: Eventhough a minimumofonly12-inches(30.48 cm)isrequired,18-inches(45.72
cm)or moreissuggested forsteamdryersand especiallyincaseswhere sprinkler
headsare overthe dryers.
NOTE: Whenfiresprinkler systemsarelocatedabove thedryers,aminimum of18-inches(45.72cm)
abovethedryer console(module)is suggested. Dryers maybepositioned sidewallto
sidewall,however,1or 2-inches(2.54or 5.08cm) issuggestedbetween dryers(or wall)for
easeofinstallationand maintenance. Allowancesmustbemade fortheopeningandclosing of
thecontrol andlintdoors.

15
IMPORTANT: Make-up airmustbeprovided from asourcefree ofdrycleaning solventfumes.
Make-upairthatiscontaminatedbydrycleaningsolventfumeswillresultin
irreparabledamage tothemotors andotherdryer components.
NOTE: ComponentfailureduetodrycleaningsolventfumeswillVOIDTHEWARRANTY.
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 anddrying 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 assure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An airflow of 2,100 cfm (cubic feet per minute) (59.5 cmm
[cubic meters per minute]) 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, this make-up air 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 (9 square feet) (0.91
meters by 0.91 meters [0.84 square 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.

16
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductwork shouldbedesigned 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: Thisdryer producescombustiblelint andmustbeexhausted totheoutdoors.
CAUTION: DRYER MUSTBEEXHAUSTEDTOTHE OUTDOORS.
CAUTION: IMPROPERLYSIZED ORINSTALLEDEXHAUSTDUCTWORK CAN
CREATEAPOTENTIALFIREHAZARD.
NOTE: Whena dryeris exhaustedseparately, itisrecommendedthata backdraft damperbe
installed.
NOTE: Whendryersare exhaustedintoamultiple (common)exhaustline,each dryer mustbe
suppliedwith abackdraft 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 (6.1 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 (6.1 meters). The shape of the ductwork is not
critical so long as the minimum cross section area is provided. It is suggested that the use of 90º turns in
ducting be avoided; use 30º or 45º angles instead. The radius of the elbows should preferably be 1-1/2
times the diameter of the duct. Excluding basket (tumbler) and 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 mustbe increased in proportion
to number of elbows added.
ALLductwork 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. ALLductwork joints mustbetaped 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.
IMPORTANT: Exhaust back pressure measuredby a manometerat the dryerexhaust duct area must
beno less than 0 and mustnotexceed0.3 inches (0.74 mb) of water column
(W.C.).
NOTE: Whentheexhaust ductwork passesthroughawall,ceiling, orroofmadeofcombustible
materials,the opening mustbe2-inches (5.08cm)larger thantheduct (allthewayaround).
Theductmustbe centeredwithinthis opening.