Continental Girbau CG75-85 User manual

For replacement parts, contact the distributor from which the dryer
was purchased or
ContinentalGirbau,Inc.®
2500State Road 44
Oshkosh WI 54904
Telephone:[phone] / Fax:[phone]
www.cont-girbau.com
120502JEV/wmarelli CGIPartNo.113387
CG75-85
(Gas DSI/Electric/Steam Phase 5
and Dual Timer/1,000 cfm)
Installation Manual
WARNING: Foryoursafetytheinformationin
this manual must be followed to minimize the
risk of fire or explosion or to prevent property
damage,personalinjury or death.
—Donot store or use gasolineor otherflammable
vapors and liquids in the vicinity of this or any
otherappliance.
—WHATTO DOIF YOUSMELL GAS:
•Donottry to lightany appliance.
•Donottouchanyelectricalswitch; do not
useanyphoneinyourbuilding.
•Cleartheroom,buildingorarea of all
occupants.
•Immediatelycallyourgas supplier froma
neighbor’sphone. Followthegas supplier’s
instructions.
•Ifyoucannotreach your gassupplier,call
thefiredepartment.
—Installationand service must be performed by a
qualified installer, service agency or the gas
supplier.
AVERTISSEMENT: Assurez-vous de bien
suivrelesinstructionsdonnéesdanscettenotice
pourréduire auminimum lerisque d’incendie
ou d’explosion ou pour éviter tout dommage
matériel,touteblessureoulamort.
—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:
•Nepas tenter d’allumer d’appareils.
•Netouchez à aucun interrupteur. Ne pas
vousservirdes téléphones setrouvant dans
lebâtiment.
•Évacuezlapièce,lebâtimentoulazone.
•Appelezimmédiatementvotrefournisseur
degazdepuisunvoisin. Suivezles
instructionsdufournisseur.
•Sivousnepouvezrejoindrelefournisseur
degaz, appelez leservice des incendies.
—L’installationetl’entretiendoiventêtreassuréspar
uninstallateur ou unservice d’entretien qualifié
ouparlefournisseur de gaz.

Retain This Manual In A Safe Place For Future Reference
Continental Girbau, Inc.®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.
“IMPORTANTNOTETO PURCHASER”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobefollowed if theusersmells gas. These instructionsmustbepostedin a
prominentlocationnearthedryer.
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 Continental Girbau, Inc.®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.
CG75-85
FORYOURSAFETY
Donot store or use gasolineor
otherflammablevapors and
liquidsinthevicinityofthisor
anyother appliance.
POURVOTRE SÉCURITÉ
Nepas entreposerni utiliserd’essence
nid’autresvapeursouliquides
inflammablesàproximitédecet
appareilou detout autreappareil.

IMPORTANT
YOUMUSTDISCONTINUEANDLOCKOUTTHEELECTRICSUPPLYANDTHEGAS
SUPPLY OR THE STEAM SUPPLY BEFORE ANY COVERS OR GUARDS ARE
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING,
ADJUSTING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA
(OccupationalSafety and HealthAdministration)STANDARDS.
CHILDRENSHOULDNOTBEALLOWEDTOPLAYONORNEARTHEDRYER(S).
WARNING
CHILDRENSHOULDBESUPERVISEDIFNEARDRYERSINOPERATION.
DRYERSSHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION.
CAUTION
FORYOURSAFETY
DONOTDRYMOPHEADSINTHEDRYER.
DONOTUSEDRYERINTHEPRESENCEOFDRY CLEANINGFUMES.
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,étiqueteztouslesfilsavant de
les débrancher. Des erreurs de câblage
peuvent entraîner un fonctionnement
inadéquatetdangereux.»

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
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
DRYERMUSTNEVERBE OPERATEDWITHOUTTHELINTFILTER/SCREENIN
PLACE,EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED.
Dryer mustnotbe installed or stored in an area where it willbeexposed to water or weather.
The wiring diagram for the dryer is located in the front electrical control box area.

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/SettingUp ............................................................................................................... 11
C. DryerEnclosureRequirements .................................................................................................. 12
D. FreshAirSupplyRequirements ................................................................................................. 13
E. ExhaustRequirements ............................................................................................................... 14
F. ElectricalInformation ................................................................................................................ 19
G. GasInformation ........................................................................................................................ 26
H. SteamInformation .................................................................................................................... 30
I. PreparationFor Operation/Start-Up ......................................................................................... 35
J. PreoperationalTests ................................................................................................................. 36
K. PreoperationalInstructions ........................................................................................................ 38
L. ShutdownInstructions............................................................................................................... 38
SECTION IV
SERVICE/PARTS INFORMATION ......................................................................39
A. Service ..................................................................................................................................... 39
B. Parts ........................................................................................................................................ 39
SECTION V
WARRANTY INFORMATION ...............................................................................40
A. Warranty .................................................................................................................................. 40
B. ReturningWarrantyParts .......................................................................................................... 40

SECTION VI
ROUTINE MAINTENANCE ..................................................................................41
A. Cleaning .................................................................................................................................... 41
B. Adjustments .............................................................................................................................. 42
C. Lubrication ................................................................................................................................ 42
D. LintDrawerRemoval ................................................................................................................ 43
SECTION VII
TROUBLESHOOTING............................................................................................44
MicroprocessorController (Computer) Models ............................................................................... 44
DualTimerModels .......................................................................................................................... 50
SECTION VIII
DATALABEL INFORMATION..............................................................................54
A. DataLabel ................................................................................................................................ 54
SECTION IX
REVERSING TIMER SPIN/DWELL ADJUSTMENTS.....................................56
SECTION X
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS ........................................................................................................57

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
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 the Continental Girbau, Inc.®Traffic
Manager at [phone] Ext. 16.
IMPORTANT: Thedryer mustbetransported andhandled inan upright position at ALLtimes.

4
B. SAFETY PRECAUTIONS
WARNING: Foryoursafety,the informationinthismanualmustbefollowedtominimizetheriskof
fireor explosion orto prevent property damage, personalinjury, or lossoflife.
WARNING: Thedryermust never beoperatedwith any of the backguards,outer tops, or
servicepanelsremoved. PERSONAL INJURYOR FIRECOULDRESULT.
IMPORTANT: Dryermust beinstalledinalocation/environment,whichthe ambient
temperatureremains between 40°F(4.44° C) and 130°F (54.44° C).
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the
user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area ofALLoccupants.
e. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
f. If you cannot reach your gas supplier, call the fire department.
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
5. Dryer(s) must be exhausted to the outdoors.
6. Although the manufacturer produces a very versatile dryer, there are some articles that, due to fabric
composition or cleaning method, should not be dried in it.
WARNING: Dryonly water washed fabrics. DO NOT dry articles spotted or washed indry
cleaningsolvents,acombustibledetergent,or“allpurpose”cleaner.
EXPLOSIONCOULD RESULT.
WARNING: DONOTdryrags orarticles coatedor contaminatedwith gasoline, kerosene, oil, paint,
orwax.
EXPLOSIONCOULD RESULT.
WARNING: DONOTdry mop heads. Contaminationby wax or flammable solventswill create a
firehazard.
WARNING: DO NOTuse heatfor dryingarticles thatcontain plastic,foam, sponge rubber, or
similarlytexturedrubbermaterials. Dryinginaheatedbasket(tumbler)maydamage
plasticsor rubber and may be a fire hazard.

5
7. A programshould be established for the inspection and cleaning of lint in the burner area, exhaust ductwork,
and area around the back of the dryer. The frequency of inspection and cleaning can best be determined
from experience at each location.
WARNING: Thecollectionoflintinthe burner area andexhaustductworkcancreate a potential fire
hazard.
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the
National Electrical CodeANSI/NFPA NO. 70-LATEST EDITION, or in Canada, the Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
NOTE: Failureto do so willVOID THEWARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switches, lint drawer switch, or heat safety
circuit ever be disabled.
WARNING: PERSONALINJURY ORFIRE COULDRESULT.
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: Articlesleftinthe dryer afterthedryingand cooling cycleshavebeencompleted can
createa fire hazard.
12. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
WARNING: YOUMUSTDISCONTINUEAND LOCKOUTTHEELECTRICSUPPLY
ANDTHE GASSUPPLYORSTEAMSUPPLYBEFOREANYCOVERS OR
GUARDSARE REMOVEDFROMTHE MACHINETOALLOWACCESS
FORCLEANING,ADJUSTING,INSTALLATION,ORTESTINGOFANY
EQUIPMENTPEROSHA(OccupationalSafetyandHealthAdministration)
STANDARDS.
13. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than 66% of its rated capacity.
14. DO NOT operate steam dryers with more than 125 PSI (8.62 bar) steam pressure. Excessive steam
pressure can damage steam coil and/or harm personnel.
15. Replace leaking flexible hoses or other steam fixtures immediately. DO NOT operate the dryer with
leaking flexible hoses. PERSONAL INJURY MAY RESULT.
16. The normal PH level for copper type steam coils must be maintained between a value of 8.5 to 9.5. For
steel type steam coils the PH level must be maintained between a value of 9.5 to 10.5. These limits are set
to limit the acid attack of the steam coils.
IMPORTANT: CoilfailureduetoimproperPHlevelwillVOID THEWARRANTY.

6
SECTIONII
SPECIFICATIONS/COMPONENTIDENTIFICATION
A. SPECIFICATIONS
Shaded areas are stated in metric equivalents
*ALL CG75-85 reversing dryers are supplied with two (2) 3-phase (3ø) motors standard: a 1 HP (0.74 kw) blower
motor and a 1/2 HP (0.37 kw) drive motor.
** Ductwork size varies with installation conditions. Exhaust static pressure must be no less than 0 and must not
exceed 0.3 inches (0.74 mb) water column (W.C.).
*** A minimum of 3/4” pipe mustbesupplied to the gas inlet for each dryer. Size of piping to dryer varies with installation
conditions. Contact factory for assistance.
**** Contact factory for electrical information not listed. 3-phase (3ø) figures shown are for 3-wire service.
***** Steam dryer must be provided with a clean, dry, and regulated 80 PSI +/- 10 PSI (5.51 bar +/- 0.68 bar) air supply.
NOTE: Themanufacturerreservestherighttomakechangesinspecificationsatanytimewithout
noticeorobligation.
STEAM***** GASELECTRIC
BASKET (TUMBLER) DIAMETER 37” 94 cm
BASKET (TUMBLER) DEPTH 36” 91.5 cm
BASKET (TUMBLER) MOTOR* 1 hp 0.74 kw
DOOR OPENING (DIAMETER) 21-1/2” 54.6 cm
BASKET (TUMBLER) VOLUME 22.4 cu.ft. 0.634 cu.m.
EXHAUST CONNECTION (DIAMETER)** 8” 20.3 cm
AIRFLOW 1,000 cfm 28.3 cmm
VOLTAGE AVAILABLE 120-460v 1, 3ø 3,4w 50/60 Hz
APPROX. NET WEIGHT 721 lbs 327 kg
APPROX. SHIPPING WEIGHT 771 lbs 363.8 kg
HEAT INPUT 175,000 btu/hr 44,100 kcal/hr
INLET PIPE CONNECTION*** 3/4” F.N.P.T.
OVEN SIZE
KW BTU/HR
60 HZ
KCAL/HR
50 HZ
30 102,400 25,800
APPLIED VOLTAGE/PHASE/APPROX. AMP DRAW****
KW 208/1Ø 240/1Ø 208/3Ø 240/3Ø 380/3Ø 416/3Ø 460/3Ø
60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz
30 - - - - 88 -77 - - - 45 40 -
VOLTAGE AVAILABLE 120-460v 1, 3ø 3w, 4w 50/60 Hz
APPROX. NET WEIGHT 752 lbs 341.1 kg
APPROX. SHIPPING WEIGHT 802 lbs 363.8 kg
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
COMPRESSED AIR CONNECTION 1/8” F.N.P.T.
STEAM CONSUMPTION BOILER HP
NORMAL
LOAD
205 lbs/hr 92.98 kg/hr 6
OPERATING
STEAM PRESSURE SUPPLY
CONNECTION*** RETURN CONNECTION***
125 PSI max 8.6 bar 1” F.N.P.T. 1” F.N.P.T.

7
Specifications
CG75-85
(Gas/Electric/Steam)
NOTE: Themanufacturerreservestherighttomakechangesinspecificationsatanytimewithout
noticeorobligation.

8
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1Controls
2Control (top access) Door Assembly
3Main DoorAssembly
4Lint Compartment Area (lint drawer)
5Data Label and Installation Label (affixed to the left side panel area behind the top control
[access] door)

9
2. Dryer Rear View
Illus. No. Description
1Heating Unit
2Electric Service Relay Box
3Basket (tumbler) Bearing MountAssembly
4Idler Bearing MountAssembly
5Blower Motor Assembly (for reversing models only)
6Leveling Legs (rear)
7Basket (tumbler) (drive) MotorAssembly
8Dryer Exhaust

10
SECTIONIII
INSTALLATIONPROCEDURES
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation must conform 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 mustconformto 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
InstallationandGasPlumbing)orCanadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION
(for Electrical Connections).
A. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 LATEST
EDITION, or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-
M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and
Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “Thedryermustbeinstalledonnoncombustiblefloorsonly.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in Section D).
5. Clearance provisions 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: Dryershould belocatedwhere a minimum amount ofexhaust ductwill benecessary.
IMPORTANT: Dryermust beinstalledinalocation/environment,whichthe ambient
temperatureremains between 40°F(4.44° C) and 130°F (54.44° C).

11
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 combustible lint and must beexhaustedto the outdoors. Every 6
months,inspecttheexhaustductingandremove any lint build up.
B. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap and/or optional shipping box) from dryer.
IMPORTANT: Dryermustbetransported andhandled inan upright positionat 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 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.
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
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), 18-inches (45.72 cm) or more is recommended for ease of installation, maintenance, and
service above the dryer’s outer top, 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 bea minimum of 4-inches (10.16 cm)
and must not extend more than 4-inches (10.16 cm) to the rear of the front. 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.
NOTE: Allowancesmust bemade forthe openingof thecontrol door.
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 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 above for details.
NOTE: Airconsiderationsareimportantforproperandefficientoperation.
IMPORTANT: Eventhoughaminimumofonly12-inches(30.48cm)isrequired,18-inches(45.72
cm)or more issuggested. The additional clearanceis advantageous forease of
installationandservice.
IMPORTANT: Whenfiresprinklersystemsarelocated above the dryers,aminimumof18-inches
(45.72cm) above the dryer console (module) isrequired. Dryers maybe positioned
sidewalltosidewall however, a 1/16” (1.5875 mm) minimum allowance is required
betweendryers(orwall) for ease ofinstallationandmaintenance. Allowances must
bemade for theopening andclosing of thecontrol doorand the lintdoor.

13
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 must be continually replenished from the outdoors. If the
make-up air is inadequate, drying time and drying efficiencywill 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 1,000 cfm (cubic feet per minute) (28.3
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 1-1/2 square feet (0.14 square meters) is required for each
dryer. The dryer must be installed with provisions for adequate combustion and make-up air supply.
To compensate for the use of registers or louvers used over the openings, this make-up air 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.
EXAMPLE: For a bank of four (4) dryers, two (2) unrestricted openings measuring 2 feet by 1-1/2
feet (0.61 meters by 0.46 meters) - (6 square feet [0.56 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.
IMPORTANT: Make-upair mustbe provided from asource free ofdry cleaning solventfumes.
Make-upairthatis contaminated bydrycleaningsolventfumeswillresultin
irreparabledamage to the motors andother dryercomponents.
NOTE: ComponentfailureduetodrycleaningsolventfumeswillVOIDTHEWARRANTY.

14
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductworkshould 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, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler)
hi-limit thermostats. Minimum diameter of ductwork must be at least 8-inches (20.32 cm). The dryer
must be installed with a proper exhaust duct connection to the outside.
CAUTION: Thisdryer producescombustible lintand mustbe exhausted to theoutdoors.
CAUTION: IMPROPERLY SIZEDOR INSTALLEDEXHAUST DUCTWORKCAN
CREATEAPOTENTIALFIREHAZARD.
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 a single 8-inch (20.32 cm) horizontal vent is used, the ductwork from the dryer to the outside outlet
cannot exceed 25 feet (7.62 meters). This calculation of 25 feet (7.62 meters) compensates or allows for
the use of a maximum of only one (1) elbow (which is the outside protection). If more elbows are added,
or the length of the ductwork increased, then the size of the ductwork must be increased as well. 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 two (2) elbows should be used in the exhaust duct run. If more than two (2) elbows are
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 mustbetaped to prevent moisture and lint from escaping into the building. Inspection doors should
be installed at strategic points in the exhaust ductwork for periodic inspection and cleaning of lint from the
ductwork.
VerticalVenting:
When a single 8-inch (20.32 cm) vertical vent is used, the ductwork from the dryer to the outside outlet
cannot exceed 15 feet (4.57 meters). This calculation of 15 feet (4.57 meters) compensates or allows for
the use of a maximum of only three (3) elbows (which includes dryer connection elbow and the outside
protection). If more elbows are added, or the length of the ductwork increased, then the size of the
ductwork must be increased as well. 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 so critical so long as the minimum cross-sectional area is provided. It is suggested that the
use of 90º turns be avoided; use 30º and/or 45º bends instead. The radius of the elbows shouldpreferably
be 1-1/2 times the diameter of the duct. ALLductwork 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 should be installed at strategic points in
the exhaust ductwork for periodic inspection and cleaning of lint from the ductwork.

15
IMPORTANT: Exhaustback pressuremeasured bya manometerin theexhaust ductmust benoless
than 0 and mustnotexceed 0.3 inches (0.74 mb) of water column (W.C.).
NOTE: Whentheexhaustductworkpassesthrough a wall, ceiling,orroofmadeof combustible
materials, the openingmustbe 2-inches (5.08cm) larger thanthe duct (all the wayaround).
Theductmustbecenteredwithinthisopening.
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: DONOTuse screens, louvers, or caps on theoutside opening of the exhaust
ductwork.
2. SingleDryerVenting
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.
IMPORTANT: Exhaustback pressuremeasured bya manometerin theexhaust ductmust be noless
than 0 and mustnotexceed 0.3 inches (0.74 mb) of water column.
NOTE: Asper the NationalFuel Gas Code,“Exhaust ducts forType 2clothes dryers shall be
constructedofsheetmetalorothernoncombustiblematerial. Suchductsshallbeequivalent
instrengthandcorrosionresistance to ductsmadeofgalvanizedsheet steel notlessthan
0.0195-inches(26gauge [0.05 mm])thick.”
IMPORTANT: Itisrecommended that exhaustor boosterfans NOT BE USED in the exhaust
ductworksystem.

16
IMPORTANT: Forextended ductworkruns, the cross section area of theductwork can only be
increasedtoanextent. Whentheductworkapproachesthemaximumlimitsnotedin
thismanual,a professionalheating,venting,andairconditioning(HVAC)firm should
beconsultedforproperventinginformation.
ALLductwork 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 should be installed at strategic points in the exhaust ductwork for periodic
inspection and cleaning of lint from the ductwork.
NOTE: Whentheexhaustductworkpassesthrough a wall, ceiling,orroofmadeof combustible
materials, the openingmustbe 2-inches (5.08cm) larger thanthe duct (all the wayaround).
Theductmustbecenteredwithinthisopening.
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: DONOTuse screens, louvers, or caps on theoutside opening of the exhaust
ductwork.