JLA D75 User manual

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 IFYOUSMELLGAS:
• Donottryto lightanyappliance.
• Donottouch anyelectricalswitch;do not
useanyphoneinyourbuilding.
• Cleartheroom, buildingorareaofall
occupants.
• Immediatelycallyourgassupplierfroma
neighbor’sphone. Followthe gas supplier’s
instructions.
• Ifyoucannotreach yourgassupplier, 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 bâtimentou lazone.
• Appelezimmédiatementvotrefournisseur
degazdepuisunvoisin. Suivezles
instructionsdufournisseur.
• Sivousnepouvezrejoindrelefournisseur
degaz,appelez leservicedes incendies.
— L’installationet l’entretiendoivent êtreassurés
paruninstallateurouunserviced’entretienqualifié
ouparle fournisseurdegaz.
PartNo.113372-16
D75 Installation Manual
(Gas DSI / HSI / Electric / Steam / Phase 7 /
Dual Timer with S.A.F.E. System)
JLALimited
MeadowcroftLane,Halifax Road
Ripponden
West Yorkshire, England
HX64AJ
Telephone:[phone] /Fax: [phone]

Retain This Manual In ASafe 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 efficient, trouble free, and most importantly, safe 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.
“IMPORTANTNOTETOPURCHASER”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobefollowed iftheusersmells gas. Theseinstructionsmustbeposted ina
prominentlocationnearthedryer.
FORYOUR SAFETY
Donot storeor usegasoline or
otherflammablevaporsand
liquidsinthevicinityofthisor
anyotherappliance.
POURVOTRESÉCURITÉ
Nepas entreposer niutiliserd’essence
nid’autresvapeursouliquides
inflammablesàproximitédecet
appareilou detoutautre appareil.
We have tried to make this manual as complete as possible and hope you will find it useful. 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:
DATEOFPURCHASE________________________________________________________ MODELNO. __________________
DISTRIBUTOR’SNAME ____________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your distributor or JLA. When ordering replacement parts from JLA, you can FAX
your order to JLA at 01422 824390 or telephone your order directly to the JLA Parts Department at 01422 822282. Please
specify the dryer model number and serial number in addition to the description and part number, so that your order is
processed accurately and promptly.
These instructions are only valid if the following country code is on the appliance… If this code is not present on the
appliance, it is necessary to refer to the technical instructions which will provide the necessary information concerning the
modification of the appliance to the condition of use for the country.
In accordance with EN ISO 3166-1, the names of countries shall be represented by the following codes:
GB United Kingdom
IE Ireland
D75

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.
WARNING
UNDER NO CIRCUMSTANCES should the dryer door switches, lint drawer switch,
or heat safety circuit ever be disabled.
“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
DRYERMUST NEVERBE OPERATEDWITHOUTTHELINTFILTER/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).
WARNING
If the hi-limit switch trips, a service call is required to investigate the reason and
resolve the issue.
WARNING
Do not modify this appliance.

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/SettingUp ............................................................................................................... 11
C. DryerEnclosureRequirements .................................................................................................. 12
D. FreshAirSupplyRequirements ................................................................................................. 13
E. ExhaustRequirements ............................................................................................................... 14
F. ElectricalInformation ................................................................................................................ 18
G. GasInformation ........................................................................................................................ 23
H. SteamInformation .................................................................................................................... 27
I. PreparationforOperation/Start-Up........................................................................................... 31
J. PreoperationalTest ................................................................................................................... 32
K. PreoperationalInstructions ........................................................................................................ 34
L. ShutdownInstructions............................................................................................................... 35
SECTION IV
SERVICE/PARTS INFORMATION ......................................................................36
A. Service ..................................................................................................................................... 36
B. Parts ........................................................................................................................................ 36
SECTION V
WARRANTY INFORMATION...............................................................................37
A. ReturningWarrantyCards......................................................................................................... 37
B. Warranty .................................................................................................................................. 37
Table of Contents

SECTION VI
ROUTINE MAINTENANCE ..................................................................................38
A. Cleaning ................................................................................................................................... 38
B. Adjustments ............................................................................................................................. 39
C. Lubrication ............................................................................................................................... 39
D. LintDrawerRemoval................................................................................................................ 40
SECTION VII
DATA LABEL INFORMATION .............................................................................41
SECTION VIII
REVERSING TIMER SPIN/DWELL ADJUSTMENTS.....................................42
SECTION IX
SENSOR ACTIVATED FIRE EXTINGUISHING (S.A.F.E.) SYSTEM ...........43

113372-16 Telephone: [phone]
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
delivering carrier’s freight terminal immediately and file a claim. The freight company considers this
concealed damage. This type of freight claim is very difficult to get paid and becomes extremely difficult
when more than a day or two passes after the freight was delivered. It is your responsibility to file freight
claims. Dryer/parts damaged in transit cannot be claimed under warranty.
5. Freight claims are the responsibility of the consignee, and ALL claims must be filed at the receiving end.
The manufacturer assumes no responsibility for freight claims or damages.
6. If you need assistance in handling the situation, please contact JLA at 01422 822282.
IMPORTANT: Thedryermustbe transportedandhandled inan uprightpositionat ALLtimes.

4 JLA Limited 113372-16
B. SAFETY PRECAUTIONS
WARNING: Foryoursafety,theinformationinthismanualmustbefollowedto minimize theriskof
fireorexplosion ortopreventproperty damage,personalinjury,orloss oflife.
WARNING: Thedryermust never be operatedwith any ofthe back guards,outertops, or
servicepanelsremoved. PERSONALINJURYORFIRECOULD RESULT.
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. DO NOT spray aerosols in the vicinity of this appliance while it is in operation.
3. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the
user smells gas. The instructions should be posted in a prominent location.
4. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of 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.
5. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
6. Dryer(s) must be exhausted to the outdoors.
7. Although JLA 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,industrialchemicals,or“allpurpose”cleaner.
EXPLOSIONCOULDRESULT.
WARNING: DONOT dryrags orarticles coatedorcontaminated withgasoline, kerosene, oil,paint,
orwax. EXPLOSION COULDRESULT.
WARNING: DONOTdrymopheads. Contamination bywaxor flammablesolventswill createa
firehazard.
WARNING: DONOT useheat for dryingarticles thatcontainplastic, foam,spongerubber,or
similarlytexturedrubbermaterials. Dryinginaheatedbasket (tumbler) maydamage
plasticsor rubberandmay bea firehazard.

113372-16 Telephone: [phone]
8. The possible presence of residual quantities of aggressive or decomposed chemicals in the load may produce
damage to the machine and harmful fumes.
9. A program shouldbeestablished for the inspection and cleaning of lint in the burner area, exhaust ductwork,
and area around the back of the dryer. The frequency of inspection and cleaning can best be determined
from experience at each location.
WARNING: Thecollectionof lintintheburner areaand exhaustductworkcancreate apotential fire
hazard.
10. 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.
11. UNDER NO CIRCUMSTANCES should the dryer door switches, lint drawer switch, or heat safety
circuit ever be disabled.
WARNING: PERSONALINJURYORFIRECOULDRESULT.
12. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
13. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articlesleftinthe dryerafter thedrying andcooling cycleshave beencompleted can
createa firehazard.
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%), 50 lb (22.7 kg) of its rated capacity.
WARNING: YOUMUSTDISCONTINUEANDLOCKOUTTHEELECTRICSUPPLY
ANDTHEGASSUPPLYORSTEAM SUPPLYBEFOREANYCOVERSOR
GUARDSAREREMOVEDFROMTHE DRYERTOALLOWACCESSFOR
CLEANING,ADJUSTING,INSTALLATION,ORTESTINGOFANY
EQUIPMENTPEROSHA(OccupationalSafetyandHealthAdministration)
STANDARDS.
IMPORTANT: Dryermust beinstalled ina location/environment,whichtheambient
temperatureremains between40°F (4.44°C) and130°F (54.44°C).
WARNING: Disconnectpowerbefore resettingthe hi-limit. Thehi-limitis locatedinthe
burnerareaof the dryer. Press andreleaseandthe hi-limit willreset.
IMPORTANT: Thisappliance mustonly be installedand operated inthe country ofdestination
indicatedon thedryer’s dataplate. If theapplianceis tobe installedandoperated ina
countryother than theoneindicated onthedata plate,adata plateamendmentmust
beobtainedfromJLALimited.
IEC335 applies.

6 JLA Limited 113372-16
MAXIMUM CAPACITY(DRYWEIGHT) 75 lb 34.0 kg
TUMBLER DIAMETER 37” 94 cm
TUMBLER DEPTH 36” 91.5 cm
TUMBLER VOLUME 22.4 cu ft 634.30 L
TUMBLER / DRIVE MOTOR 1 hp*0.75 kW
BLOWER / FAN MOTOR N / A
DOOR OPENING (DIAMETER) 31-3/8” 79.69 cm
DOOR SILL HEIGHT N / A
WATER CONNECTION 3/4” B.S.P.T.
DRYERS PER 20’/40’ CONTAINER 9 / 20
DRYERS PER 48’/53’ TRUCK 24 / 26
VOLTAGE AVAILABLE 120-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 741 lb 336.1 kg
APPROXIMATE SHIPPING WEIGHT 793 lb 359.7 kg
AIRFLOW 60 Hz 1,000 cfm 28.32 cmm
50 Hz 840 cfm 23.78 cmm
HEATINPUT 175,000 Btu/hr 44,100 kcal/hr
EXHAUST CONNECTION (DIAMETER) 8” 20.32 cm
COMPRESSED AIR CONNECTION N / A
COMPRESSED AIR VOLUME N / A
INLET PIPE CONNECTION 3/4” B.S.P.T.
VOLTAGE AVAILABLE
N / A
APPROXIMATE NET WEIGHT
APPROXIMATE SHIPPING WEIGHT
AIRFLOW 60 Hz
50 Hz
EXHAUST CONNECTION (DIAMETER)
COMPRESSED AIR CONNECTION
COMPRESSED AIR VOLUME
OVEN SIZE
kW Btu/hr kcal/hr
30 102,387 25,802
VOLTAGE AVAILABLE 120-575V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 816 lb 370.13 kg
APPROXIMATE SHIPPING WEIGHT 868 lb 393.72 kg
AIRFLOW 60 Hz 1,200 cfm 33.98 cmm
50 Hz 1,000 cfm 28.32 cmm
STEAM CONSUMPTION 275 lb/hr 124.7 kg/hr
OPERATING STEAM PRESSURE 125 psi max 8.62 bar
EXHAUST CONNECTION (DIAMETER) 8” 20.32 cm
COMPRESSED AIR CONNECTION 1/8” F.N.P.T.
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
BOILER HORSEPOWER (NORMAL LOAD) 7.2 Bhp
SUPPLYCONNECTION (1) 1” N.P.T.
(Female)
RETURN CONNECTION (1) 1” N.P.T. (Female)
SECTIONII
SPECIFICATIONS/COMPONENTIDENTIFICATION
A. SPECIFICATIONS
NOTE: Themanufacturerreservestherighttomakechangesin specifications atanytimewithout
noticeor obligation.
Shaded areas are stated in metric equivalents 11/12/15
* All reversing dryers are supplied with two (2) 3-phase (3ø) motors standard: a 1 hp (0.75 kW) blower
motor and a 1/2 hp (0.37 kW) drive motor.
** Air-operated steam damper system requires a clean, dry, and regulated 80 psi +/- 10 psi (5.51 bar
+/- 0.69 bar) air supply.
GAS
ELECTRICSTEAM**

113372-16 Telephone: [phone]
SPECIFICATIONS
NOTE: Themanufacturerreservestherighttomakechangesin specifications atanytimewithout
noticeor obligation.

8 JLA Limited 113372-16
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1 Controls
2 Control (top access) Door Assembly
3 Main Door Assembly
4 Lint Compartment Area
5 Data Label and Installation Label
6 Logo

113372-16 Telephone: [phone]
2. Dryer Rear View
Illus. No. Description
1 Heating Unit
2 Electric Service Relay Box
3 Basket (tumbler) Bearing MountAssembly
4 Idler Bearing MountAssembly
5 Blower MotorAssembly (for reversing models only)
6 Leveling Legs (rear)
7 Basket (tumbler) (drive) MotorAssembly
8 Dryer Exhaust

10 JLA Limited 113372-16
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
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: “Thedryer mustbeinstalledonnoncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in Section D).
5. Clearance provisions 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 in Section E).
8. The 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: Thedryershouldbe locatedwhere a minimumamountof exhaustductwillbe
necessary.
9. The dryer must be installed with adequate clearance for air openings into the combustion chamber.

113372-16 Telephone: [phone]
CAUTION: Thisdryer producescombustiblelint andmustbeexhausted tothe outdoors. Every 6
months,inspecttheexhaustductingandremoveanylintbuildup.
IMPORTANT: The dryermustbeinstalledina location/environment,which theambient
temperatureremains between40°F (4.44°C) and130°F (54.44°C).
B. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap and/or optional shipping box) from dryer.
IMPORTANT: Dryermustbetransportedandhandled inan uprightpositionat ALLtimes.
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 two (2) bolts securing the base of the dryer to the wooden skid. One (1) is at
the rear base (remove the back panel for access), and the other is located in the bottom of the lint chamber. To
remove the bolt located in the lint chamber area, remove the lint drawer.
To increase bearing life and improve efficiency, the dryer should be tilted slightly to the rear.
1. Leveling Dryer
The dryer is equipped with four (4) leveling legs, one (1) at each corner of the base. Two (2) are located
at the rear of the dryer base, and two (2) are located in the lint chamber (coop). To increase bearing life
and improve efficiency, the dryer should be tilted slightly to the rear.

12 JLA Limited 113372-16
NOTE: Allowancesmustbemade forthe openingofthe controldoor.
Dryers may be positioned sidewall to sidewall. However, a 1/16” (1.5875 mm) minimum allowance must be
made for the opening and closing of the control door. It is suggested that the dryer be positioned about 2 feet
(0.61 meters) away from the nearest obstruction for ease of installation, maintenance, and service (to be measured
from the back guard). Refer to the illustration above for details.
IMPORTANT: Eventhoughaminimumof only12-inches (30.48cm) isrequired, 24-inches(60.96
cm)or more issuggested. Theadditional clearanceisadvantageous foreaseof
installationandservice.
IMPORTANT: Whenfiresprinklersystemsare locatedabove thedryers, aminimum of18-inches
(45.72cm) abovethedryer console(module)is required. Dryersmay be positioned
sidewalltosidewallhowever,a 1/16”(1.5875mm)minimumallowanceisrequired
betweendryers(orwall) for easeof installationand maintenance.
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of
12-inches (30.48 cm) above the dryer’s outer top, 18-inches (45.72 cm) or more is recommended for ease of
installation, maintenance, and service, except along the front of the dryer, which may be partially 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. The bulkhead facing must not be closed in
ALL the way to the top of the dryer. A 1-inch (2.54 cm) clearance is required.

113372-16 Telephone: [phone]
D. FRESH AIR SUPPLYREQUIREMENTS
This appliance may only be installed in a room that meets the appropriate ventilation requirements specified in
the national installation regulations.
When the dryer is operating, it draws in room air, heats it, passes this air through the tumbler, and exhausts it out
of the building. Therefore, the room air must be continually 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. The dryer must be
installed with provisions for adequate combustion and make-up air supply.
Air supply (make-up air) must be given careful consideration to ensure proper performance of each dryer. As
a general rule, an unrestricted air entrance from the outdoors (atmosphere) measuring a minimum size of
12-inches by 14.6-inches (30.5 cm by 37.1 cm) is required for each dryer. (Based on 1 square inch per 1,000
Btu.)
To compensate for the use of registers or louvers used over the openings, this 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.
A = 17.5-inches (44.5 cm)
B = 20-inches (50.8 cm)
EXAMPLE: For a bank of 4 dryers, 2 unrestricted openings measuring 17.5-inches by 20-inches (44.5 cm by
50.8 cm) are acceptable.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
IMPORTANT: Make-upairmust be providedfroma source freeofdry cleaningsolvent fumes.
Make-upairthatiscontaminatedbydrycleaningsolventfumeswillresultin
irreparabledamage tothemotors andotherdryer components.
NOTE: Componentfailureduetodrycleaningsolventfumeswillvoidthewarranty.

14 JLA Limited 113372-16
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-limits. The dryer must be installed with a proper exhaust duct connection to the outside.
The design of the flue system shall be such that any condensate formed when operating the appliance from
cold shall either be retained and subsequently re-evaporated or discharged.
CAUTION: Thisdryer producescombustiblelint andmustbeexhaustedtothe outdoors.
CAUTION: IMPROPERLYSIZED ORINSTALLEDEXHAUSTDUCTWORKCAN
CREATEAPOTENTIALFIREHAZARD.
IMPORTANT: Exhaustback pressuremeasured bya manometer/magnehelic inthe exhaustduct
must be no less than 0 and must not exceed 0.7 in WC (1.74 mb).
NOTE: Itis recommendedthat exhaustorbooster fansnot beusedin theexhaust ductworksystem
exceptwherenecessary tomaintainexhaust backpressure (intheexhaust duct)betweenzero
and0.7inch watercolumn. Whereemployed, booster fansmustnot activatethe dryerairflow
provingswitch(sail switch)when thedryerisnotinoperation.
The 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.
HorizontalVenting:
When single dryer venting is used, the length of ductwork from the dryer to the outside exhaust outlet must
not exceed 45 feet (13.72 meters). The minimum diameter of this ductwork must be at least 8-inches
(20.32 cm). In the case of multiple (common) dryer venting, the distance from the last dryer to the outside
exhaust outlet must not exceed 15 feet (4.57 meters). The shape of the ductwork is not critical so long
as the minimum cross-sectional area is provided. It is suggested that the use of 90° turns be avoided; use
30° and/or 45° angles instead. The radius of the elbows should preferably be 1-1/2 times the diameter of
the duct. Including basket (tumbler)/dryer elbow connections or elbows used for outside protection from
the weather, no more than one (1) elbow should be used in the exhaust duct run. If more than one (1)
elbow is used, the cross-sectional area of the ductwork must be increased. ALL ductwork should be
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 shouldbe installed at strategic points in the exhaust ductwork for periodic inspection and cleaning of
lint from the ductwork.

113372-16 Telephone: [phone]
VerticalVenting:
When single dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet
must not exceed 15 feet (4.57 meters). The minimum diameter of this ductwork must be at least
8-inches (20.32 cm). The shape of the ductwork is not critical so long as the minimum cross-sectional area
is provided. It is suggested that the use of 90° turns be avoided; use 30° and/or 45° bends instead. The
radius of the elbows should preferably be 1-1/2 times the diameter of the duct. ALL ductwork should
besmooth 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 shouldbe installed at strategic points in the exhaust ductwork for periodic inspection and cleaning of
lint from the ductwork.
NOTE: Asper theNationalFuel GasCode, “Exhaustductsfor type2 clothesdryersshall be
constructedofsheetmetal or othernoncombustible material. Suchducts shallbe equivalent in
strengthandcorrosion resistancetoducts madeof galvanizedsheetsteel notless than26
gauge(0.0195-inches[0.50 mm]) thick.”
IMPORTANT: Exhaustback pressuremeasured bya manometer/magnehelic inthe exhaustduct
must be no less than 0 and must not exceed 0.7 in WC (1.74 mb).
NOTE: Itis recommendedthat exhaustorbooster fansnot beusedin theexhaust ductworksystem
exceptwherenecessary tomaintainexhaust backpressure (intheexhaust duct)betweenzero
and0.7inch watercolumn. Whereemployed, booster fansmustnot activatethe dryerairflow
provingswitch(sail switch)when thedryerisnotinoperation.
NOTE: Whentheexhaust ductwork passesthroughawall,ceiling, orroof madeofcombustible
materials,the opening mustbe2-inches (5.08cm)larger thantheduct (alltheway around).
Theductmustbecenteredwithin thisopening.
a. Outside Ductwork Protection
1) 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.
IMPORTANT: DONOTusescreens, louvers,or caps onthe outsideopening ofthe exhaust
ductwork.

16 JLA Limited 113372-16
IMPORTANT: Forextended ductworkruns, thecrosssection areaof theductwork canonly be
increasedtoan extent. When theductwork approachesthemaximumlimits noted in
thismanual,aprofessionalheating,venting,andair-conditioning(HVAC)firmshould
beconsultedforproperventinginformation.
2. Single DryerVenting
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 the ducting be avoided; use 30° and/or 45° angles
instead. The shape of the exhaust ductwork is not critical so long as the minimum cross section area is
provided.