Continental Girbau CG115-25 III User manual

CG115-25 III
(Phase 7 with S.A.F.E. and Dual Timer)
Installation Manual
022803JEV/mcronan CGI PartNo.A113173
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
WARNING: Foryoursafety theinformationin
thismanual mustbe followedto minimizethe
riskof fireor explosionor toprevent property
damage,personalinjuryordeath.
— Donotstore or usegasoline or otherflammable
vapors and liquids in the vicinity of this or any
otherappliance.
— WHATTO DOIFYOUSMELLGAS:
• Donottrytolightanyappliance.
• Donottouchanyelectricalswitch;donot
useanyphoneinyourbuilding.
• Cleartheroom,buildingorareaofall
occupants.
• Immediatelycallyourgassupplierfroma
neighbor’s phone. Follow the gas supplier’s
instructions.
• Ifyoucannotreachyourgassupplier, call
thefiredepartment.
— Installationand service must beperformed by a
qualified installer, service agency or the gas
supplier.
AVERTISSEMENT: Assurez-vous de bien
suivrelesinstructionsdonnéesdanscettenotice
pourréduire au minimum 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:
• Nepastenterd’allumerd’appareils.
• Netouchez à aucuninterrupteur. Ne pas
vousservirdestéléphonesse trouvant dans
lebâtiment.
• Évacuezlapièce,lebâtimentoulazone.
• Appelezimmédiatementvotrefournisseur
degazdepuisunvoisin. Suivezles
instructionsdufournisseur.
• Sivousnepouvezrejoindre lefournisseur
degaz,appelezle service des incendies.
— L’installationetl’entretiendoiventêtreassuréspar
uninstallateurouunserviced’entretienqualifié
ouparlefournisseurdegaz.

Retain This Manual In ASafe 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.
“IMPORTANTNOTETOPURCHASER”
Informationmustbeobtainedfromyourlocal gas supplierontheinstructions
tobefollowed if the usersmellsgas. These instructionsmustbepostedina
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.
Important
For your convenience, log the following information:
DATEOFPURCHASE______________________________ MODELNO. __________________________________________
DISTRIBUTOR’SNAME ____________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your distributor or the Continental Girbau, Inc.® Please specify the dryer model
number and serial number in addition to thedescription and part number, so that your order is processed accurately and
promptly.
CG115-25
POURVOTRESÉCURITÉ
Nepasentreposerni utiliser d’essence
nid’autresvapeursouliquides
inflammablesàproximitédecet
appareiloude tout autreappareil.
FORYOUR SAFETY
Donot store or use gasolineor
otherflammablevaporsand
liquidsinthevicinityofthisor
anyotherappliance.

WARNING
UNDER NO CIRCUMSTANCES should the dryer drawer switches, lint door switch,
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
(OccupationalSafety and HealthAdministration) STANDARDS.
WARNING
CHILDRENSHOULDNOTBEALLOWEDTOPLAYONORNEARTHEDRYER(S).
CHILDRENSHOULDBESUPERVISEDIFNEARDRYERSINOPERATION.
CAUTION
DRYERSSHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION.
FORYOURSAFETY
DONOTDRYMOPHEADSINTHE DRYER.
DONOTUSEDRYERINTHEPRESENCEOFDRYCLEANING FUMES.
“Caution: Label all wires prior to
disconnection when servicing controls. Wiring
errors can cause improper operation.”
«Attention: Au moment de l’entretien des
commandes,étiquetez tous les fils avant de
les débrancher. Des erreurs de câblage
peuvent entraîner un fonctionnement
inadéquatet dangereux.»

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 NEVERBEOPERATEDWITHOUTTHELINTFILTER/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. UnpackingandSetting Up ........................................................................................................ 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. PreoperationalTest ................................................................................................................... 39
K. ShutdownInstructions............................................................................................................... 42
SECTION IV
SERVICE AND PARTS INFORMATION.............................................................43
A. Service ..................................................................................................................................... 43
B. Parts ........................................................................................................................................ 43
SECTION V
WARRANTY INFORMATION...............................................................................44
A. Warranty .................................................................................................................................. 44
B. ReturningWarrantyParts .......................................................................................................... 44

SECTION VI
ROUTINE MAINTENANCE ..................................................................................45
A. Cleaning ................................................................................................................................... 45
B. Adjustments ............................................................................................................................. 46
C. Lubrication ............................................................................................................................... 46
D. LintDrawerRemoval................................................................................................................ 47
SECTION VII
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS........................................................................................................48
SECTION VIII
REVERSING TIMER SPIN/DWELL ADJUSTMENTS.....................................50
SECTION IX
SENSOR ACTIVATED FIRE EXTINGUISHING (S.A.F.E.) SYSTEM ...........51
Installation ...................................................................................................................................... 52
SensorActivatedFireExtinguishing(S.A.F.E.)SystemTheoryofOperation .................................... 55
SystemReset.................................................................................................................................. 55
OPLS.A.F.E. System Check Procedure ......................................................................................... 55
S.A.F.E.System Parts BreakDown................................................................................................56

3
SECTION I
IMPORTANT INFORMATION
A. RECEIVING AND 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.
Continental Girbau, Inc.®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: The dryer must be transported and handled in an upright position at ALLtimes.

4
B. SAFETY PRECAUTIONS
WARNING: For your safety, the information in this manual must be followed to minimize the risk of
fire or explosion or to prevent property damage, personal injury, or loss of life.
WARNING: The dryer must never be operated with any of the back guards, outer tops, or
service panels removed. PERSONAL INJURY OR FIRE COULD RESULT.
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 Continental Girbau, Inc.®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. DO NOT dry articles spotted or washed in dry
cleaning solvents, a combustible detergent, or “all purpose” cleaner.
EXPLOSION COULD RESULT.
WARNING: DO NOT dry rags or articles coated or contaminated with gasoline, kerosene, oil, paint,
or wax.
EXPLOSION COULD RESULT.
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a
fire hazard.
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or
similarly textured rubber materials. Drying in a heated basket (tumbler) may damage
plastics or rubber and may be a fire hazard.

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 collection of lint in the burner area and exhaust ductwork can create a potential 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: Failure to do so will VOID THE WARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer drawer switches, lint door switch, heat safety circuit
ever be disabled.
WARNING: PERSONALINJURY OR FIRE COULD 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 left in the dryer after the drying and cooling cycles have been completed can
create a fire hazard.
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%) of its rated capacity.
14. DO NOT operate steam dryers with more that 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 INJURYMAYRESULT.
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:Coil failure due to improper PH level will VOID THE WARRANTY.
WARNING: YOU MUST DISCONNECT ANDLOCKOUT THE ELECTRIC SUPPLY AND
THEGAS 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 (Occupational Safety and Health Administration)
STANDARD.
IMPORTANT:Dryer must be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).

6
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION
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).
***Contact factory for information not listed, 3-phase (3ø) figures shown are for 3-wire service.
IMPORTANT: Steam dryers must be provided with a clean, dry, regulated 80 PSI ± 10 PSI (5.51
bar ± 0.68 bar) air supply.
NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or
obligation.
GasElectricSteam
BASKET DIAMETER 42”
106.7 cm
BASKET DEPTH 42” 106.7 cm
BASKET MOTOR 3/4 hp 0.560 kw
BLOWER MOTOR 3 hp 2.24 kw
DOOR OPENING (DIAMETER) 31-3/8” 79.7 cm
BASKET VOLUME 33.7 cu.ft. 0.98 cu.m.
AIRFLOW 2,100 cfm 59.5 cmm
VOLTAGE AVAILABLE 208-575v 3ø 3, 4w 50/60 Hz
APPROX. NET WEIGHT 1,260 lbs 572 kg
APPROX. SHIPPING WEIGHT 1,400 lbs 635 kg
HEAT INPUT 343,000 btu/hr 86,436 kcal/hr
EXHAUST CONNECTION (DIA)*14” 35.56 cm
INLET PIPE CONNECTION** 1” F.P.T.
OVEN SIZE
KW BTU/HR
60 HZKCAL/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 120-460v 1,3ø 3, 4w 50/60 Hz
APPROX. NET WEIGHT 1,735 lbs 787 kg
APPROX. SHIPPING WEIGHT 1,875 lbs 850.5 kg
EXHAUST CONNECTION (DIA.)*16” 40.64 cm
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
COMPRESSED AIR CONNECTION 1/8” F.P.T.
STEAM CONSUMPTION BOILER HP NORMAL
LOAD
375 lbs/hr 170.0
kg/hr 11
OPERATING
STEAM PRESSURE SUPPLY CONNECTION** RETURN CONNECTION**
125 PSI max 8.6 bar 1-1/4” F.P.T. 1-1/4” F.P.T.
030303

7
NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or
obligation.
Specifications
CG115-25 III (Gas, Electric, Steam)

8
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1Microprocessor Control and Keyboard (touch pad) Panel Assembly (controls)
2Control (top access) Door Assembly
3Main Door Assembly
4Lint Door Assembly
5Lint Drawer
6Wire Diagram (located behind control door)
7Top Console (module) Assembly

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

10
SECTION III
INSTALLATION PROCEDURES
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation must conform toapplicable American National Standards: ANSI Z223.1-
LATEST EDITION (National Fuel Gas Code) or ANSI/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 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: “The dryer must be installed on noncombustible 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. 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: Dryer should be located where a minimum amount of exhaust duct will be 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: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint build up.
IMPORTANT:Dryermust be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).
B. UNPACKING AND SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in an upright position at 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) 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: Lint door cannot be removed totally from dryer due to a safety chain. The chain is secured to
the dryer and door with special tamperproof screws. The safety chain must not be removed
or cut from the lint door. Once these lag bolts are off, remove the eight (8) nuts and bolts
holding the skid together and take the skid apart. The dryer can now be removed from the
skid and set into place.
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: The dryer must be transported and handled in an upright position at ALL times.

13
4. Exhaust Transition Piece
a. Inside the basket (tumbler) of this dryer is an
exhaust transition piece that must be installed on
the outlet of the exhaust before any further venting
is connected:
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: It is recommendedthat this joint be taped
as well as ALL other duct joints to prevent
moisture and lint from escaping into the
building.
WARNING
Anexhaustducttransitionpieceisshippedinsideofthedryer’s
tumbler and MUST be installed on the dryer’s
exhaust duct, with the hardware provided, BEFORE
location venting is connected to the dryer.
THIS EXHAUST DUCT TRANSITION PIECE
MUST BE INSTALLED FIRST!
Failure to observe this installation requirement may result in
damage to the dryer, create aFIRE HAZARD and will VOID
the manufacturer’s warranty.
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: Bulkhead facing should not be installed until after dryer is in place. Ceiling area must be
located a minimum of 12-inches (30.48 cm) above the top of the dryer.
IMPORTANT: Even though a minimum of only 12-inches (30.48 cm) is required, 18-inches (45.72
cm) or more is suggested for steam dryers and especially in cases where sprinkler
heads are over the dryers.
NOTE: When fire sprinkler systems are located above the dryers, a minimum of 18-inches (45.72 cm)
above the dryer console (module) is suggested. Dryers may be positioned sidewall to
sidewall, however, 1 or 2-inches (2.54 or 5.08 cm) is suggested between dryers (or wall) for
ease of installation and maintenance. Allowances must be made for the opening and closing of
the control and lint doors.

15
IMPORTANT: Make-up air must be provided from a source free of dry cleaning solvent fumes.
Make-up air that is contaminated by dry cleaning solvent fumes will result in
irreparable damage to the motors and other dryer components.
NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.
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 airmust 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.
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) 59.4 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
(0.91 meters by 0.91 meters) 9 square feet (0.84 square meters) is 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 should be designed and installed by a qualified professional. Improperly sized ductwork
will create excessive back pressure which results in slow drying, increased use of energy, overheating of
the dryer, 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 proper exhaust duct connection to the outside.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors.
CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUSTDUCTWORKCAN
CREATE APOTENTIALFIREHAZARD.
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 should not
exceed20 feet (6.1 meters). In the case of multiple (common) dryer venting, the distance from the last
dryer to the outside exhaust outletshould not exceed20 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 must be increased
in proportion to number of elbows added.
ALL ductwork 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. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the
building. Additionally, inspection doors should be installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning of lint from the ductwork.
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must
be no less than 0 and must not exceed 0.3 inches of water column (0.74 mb).
NOTE: When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible
materials, the opening must be 2-inches (5.08 cm) larger than the duct (all the way around).
The duct must be centered within this opening.
IMPORTANT:It is recommendedthat exhaust or booster fans not be used in the exhaust ductwork
system.
NOTE: As per the National Fuel Gas Code, “Exhaust ducts for type 2 clothes dryers shall be
constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in
strength and corrosion resistance to ducts made of galvanized sheet steel not less than
0.0195-inches (26 gauge [0.05 mm]) thick.”