Maytag MDG30V User manual

MDG30V
(30 lb. Single Pocket)
Installation Manual
041202JEV/mcronan PartNo.113365
RETAINTHESEINSTRUCTIONS INASAFE
PLACE FOR FUTURE REFERENCE
WARNING: Foryoursafetytheinformationin
thismanual must befollowedto minimize the
riskof fire orexplosionor topreventproperty
damage,personalinjuryordeath.
— Donotstore or use gasolineorotherflammable
vapors and liquids in the vicinity of this or any
otherappliance.
— WHATTODO IFYOU SMELLGAS:
• Donottrytolightanyappliance.
• Donottouchanyelectricalswitch;donot
useanyphoneinyourbuilding.
• Cleartheroom,buildingorareaofall
occupants.
• Immediatelycallyourgassupplierfroma
neighbor’sphone. Followthegassupplier’s
instructions.
• Ifyoucannotreachyourgassupplier,call
thefiredepartment.
— Installationandservice must beperformedbya
qualified installer, service agency or the gas
supplier.
AVERTISSEMENT: Assurez-vous de bien
suivrelesinstructionsdonnéesdanscettenotice
pourréduireau minimum lerisqued’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 aucun interrupteur. Ne pas
vousservirdestéléphonessetrouvantdans
lebâtiment.
• Évacuezlapièce,lebâtimentoulazone.
• Appelezimmédiatementvotrefournisseur
degazdepuisunvoisin. Suivez les
instructionsdufournisseur.
• Sivousnepouvez rejoindrelefournisseur
degaz,appelezleservicedesincendies.
— L’installationetl’entretiendoiventêtreassuréspar
uninstallateurouunserviced’entretienqualifié
ouparlefournisseurdegaz.

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 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”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobefollowediftheusersmellsgas. Theseinstructions mustbeposted in a
prominentlocationnearthe dryer.
FORYOUR SAFETY
Donot store orusegasolineor
otherflammablevaporsand
liquidsinthevicinityofthisor
anyotherappliance.
POURVOTRESÉCURITÉ
Nepasentreposerniutiliser d’essence
nid’autresvapeursou liquides
inflammables àproximitédecet
appareiloude tout autre appareil.
We have tried to make this manual as complete as possible and hope you will find it useful. The 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:
DATE OFPURCHASE________________________________ MODELNO. __________________________________________
DEALER’SNAME __________________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Forreplacementparts, contact the dealerfromwhichthedryerwas purchased or contact:
Maytag Co.
403 West Fourth Street North
Newton, Iowa 50208
[phone]

CHILDRENSHOULDNOTBEALLOWEDTOPLAYONORNEARTHE
DRYERS. CHILDRENSHOULDBESUPERVISEDIFNEARDRYER(S)IN
OPERATION.
WARNING
DRYER(S)SHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION.
CAUTION
FORYOURSAFETY
DONOTDRYMOPHEADSINTHEDRYER.
DONOTUSEDRYERINTHEPRESENCEOFDRYCLEANINGFUMES.
“Caution: Label all wires prior to
disconnection when servicing controls.Wiring
errors can cause improper operation.”
«Attention: Lordesopérations d’entretien
des commandes étiqueter tous fils avant
de les déconnecter. Toute erreur de
câblage peut étre une source de danger et
depanne.»
WARNING
UNDER NO CIRCUMSTANCES should the dryer doorswitch, lint drawer switch, or
heat safety circuit ever be disabled.
IMPORTANT
YOUMUSTDISCONNECTANDLOCKOUTTHEELECTRICSUPPLYANDTHEGAS
SUPPLY BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE
MACHINETOALLOWACCESSFORCLEANING,ADJUSTING,INSTALLATION,OR
TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health
Administration)STANDARDS.

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.
Dryers must not be installed or stored in an area where it will be exposed to water and/or
weather.
The wiring diagram for the dryer is located in the front electrical control box area.
DRYER MUSTNEVERBEOPERATEDWITHOUTTHELINTFILTER/SCREENIN
PLACE...EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED.
WARNING

Table of Contents
SECTION I
IMPORTANT INFORMATION............................................................................... 3
A. ReceivingandHandling ............................................................................................................... 3
B. SafetyPrecautions ...................................................................................................................... 4
SECTION II
SPECIFICATIONS ....................................................................................................6
A. Specifications ............................................................................................................................. 6
SECTION III
INSTALLATION PROCEDURES ...........................................................................8
A. Unpacking/SettingUp ................................................................................................................. 8
B. LocationRequirements ............................................................................................................... 9
C. DryerEnclosureRequirements .................................................................................................. 10
D. FreshAirSupplyRequirements ................................................................................................. 11
E. ExhaustRequirements ............................................................................................................... 12
F. ElectricalInformation ................................................................................................................ 18
G. GasInformation ........................................................................................................................ 23
H. Preparation ForOperation/Start-Up ......................................................................................... 27
I. PreoperationalTests ................................................................................................................. 28
J. PreoperationalInstructions ........................................................................................................ 29
K. ShutDownInstructions ............................................................................................................. 32
SECTION IV
SERVICE/PARTS INFORMATION......................................................................33
A. Service ..................................................................................................................................... 33
B. Parts ........................................................................................................................................ 33
SECTION V
WARRANTY INFORMATION ..............................................................................34
A. ReturningWarrantyCards......................................................................................................... 34
B. Warranty .................................................................................................................................. 34

SECTION VI
ROUTINE MAINTENANCE..................................................................................35
A. Cleaning ................................................................................................................................... 35
B. Adjustments ............................................................................................................................. 36
C. Lubrication ............................................................................................................................... 36
D. LintDrawerRemoval................................................................................................................ 37
SECTION VII
TROUBLESHOOTING...........................................................................................38
SECTION VIII
DATA LABEL INFORMATION.............................................................................44
A. DataLabel ............................................................................................................................... 44
SECTION IX
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS .......................................................................................................46

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 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, andALL claims must be filed at the receiving end.
Manufacturer assumes no responsibility for freight claims or damages.
IMPORTANT: Thedryer mustbe transportedand handledin anupright position atALLtimes.

4
B. SAFETY PRECAUTIONS
WARNING: Foryoursafety, theinformationinthismanualmustbefollowedtominimizethe riskof
fireorexplosionortopreventpropertydamage,personalinjury,orlossoflife.
WARNING: The dryermust neverbeoperated withany ofthe backguards,outer tops,or
servicepanels removed. PERSONALINJURYOR FIRECOULD 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. AlthoughMaytag 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 waterwashedfabrics. DONOTdry articlesspottedor washed indry
cleaningsolvents,acombustibledetergent,or“allpurpose”cleaner.
EXPLOSIONCOULDRESULT.
WARNING: DONOT dryragsorarticles coated orcontaminatedwithgasoline,kerosene,oil, paint,
orwax.
EXPLOSIONCOULDRESULT.

5
WARNING: DONOTdry mop heads. Contamination by waxorflammablesolventswillcreatea
firehazard.
WARNING: DONOTuse heat fordryingarticlesthatcontainplastic, foam, sponge rubber,or
similarlytexturedrubbermaterials. Drying inaheatedbasket(tumbler)maydamage
plasticsorrubber and maybeafirehazard.
7. A program should 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: Thecollectionoflintintheburnerareaandexhaustductworkcancreateapotentialfire
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: Failuretodoso willVOIDTHEWARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or heat safety circuit
ever be disabled.
WARNING: PERSONALINJURYORFIRECOULD 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: Articlesleftinthedryerafterthedrying and cooling cycles havebeencompletedcan
createafire 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%) 19 lbs (8.61 kg) of its rated capacity.
WARNING: YOUMUSTDISCONNECTANDLOCKOUTTHE ELECTRICSUPPLYAND
THEGAS SUPPLYBEFOREANYCOVERS ORGUARDSAREREMOVED
FROMTHEMACHINETOALLOWACCESSFORCLEANING,
ADJUSTING, INSTALLATION,ORTESTINGOFANYEQUIPMENTPER
OSHA(OccupationalSafetyandHealthAdministration)STANDARDS.

6
SECTIONII
SPECIFICATIONS
A. SPECIFICATIONS
* MDG30V reversing dryer available with 3-phase (3ø) 1/2 HP (0.373 kw) motors standard.
** Size of piping to dryer varies with installation conditions. Contact factory for assistance.
NOTE: Manufacturerreservestherighttomake changes in specificationsatanytimewithoutnotice
orobligation.
Gas
MAXIMUM CAPACITY (DRY WEIGHT) 30 lbs 13.6 kg
BASKET (TUMBLER) DIAMETER 32-3/4” 83.2 cm
BASKET (TUMBLER) DEPTH 25-5/8” 65.1 cm
BASKET (TUMBLER) MOTOR 1/2 HP* 0.373 kw
DOOR OPENING (DIAMETER) 21-1/2” 54.61 cm
BASKET (TUMBLER) VOLUME 12.5 cu. ft. 0.354 cu.m.
DRYERS PER 20’/40’ CONTAINER 12/26
DRYERS PER 45’/48’ TRUCK 30/32
VOLTAGE AVAILABLE 120-460v 1ø - 3ø 3, 4w 50/60 Hz
APPROX. WEIGHT (UNCRATED) 534 lbs 242 kg
APPROX. WEIGHT (CRATED) 571 lbs 259 kg
HEAT INPUT 100,000 btuh 25,200 kcal/hr
AIRFLOW 460 cfm 13 cmm
INLET PIPE CONNECTION 1/2” F.P.T.**
Shaded areas are stated in metric equivalents

7
NOTE: Manufacturerreservestherighttomake changes in specificationsatanytimewithoutnotice
orobligation.
Specifications
MDG30V

8
SECTIONIII
INSTALLATIONPROCEDURES
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation mustconformto applicableAmerican National Standards:ANSI Z223.1-
LATEST EDITION (National Fuel Gas Code) 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 LATESTEDITION
(for Electrical Connections).
A. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryermustbetransportedandhandled 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) 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.
With the skid removed, to make it easier to slide the dryer into its final position, slightly lower ALL four (4)
leveling legs, so that the dryer will slide on the legs instead of the base frame.
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.

9
B. 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 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “Thedryermustbeinstalledon noncombustiblefloorsonly.”
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: Dryershouldbelocated where a minimum amount of exhaustduct will benecessary.
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: Thisdryerproduces combustible lint andmustbeexhaustedtothe outdoors. Every 6
months,inspecttheexhaustductingandremoveanylint buildup.

10
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; except along the front of the dryer, which may be closed if
desired.
NOTE: Allowancesmustbemade foropeningthecontroldoor.
NOTE: With the exception of thefloor, clearancesshownareforcombustibleconstruction.
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease of maintenance.
* 1-inch (2.54 cm) maximum for electric dryers.
NOTE: Airconsiderationsareimportantforproperand efficient operation.
Dryers may be positioned sidewall to sidewall. However, a 1/16-inch (1.59 mm) minimum allowance must be
made for 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.

11
D. FRESH AIR SUPPLYREQUIREMENTS
The MDG30V 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. 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. If registers or louvers are installed over the openings, then the area must be increased. It is not
necessary to have separate make-up air openings for each dryer. Common make-up air openings are acceptable.
However, they must be set up in such a manner that the make-up air is distributed equally to the dryers. The
dryer must be installed with provisions for adequate combustion and make-up air supply.
EXAMPLE: For a bank of eight (8) dryers, two (2) unrestricted openings measuring 3 feet by 2 feet (0.914
meters by 0.61 meters) (6 square feet [0.557 square meters]) is acceptable.
IMPORTANT: Make-up air openings shouldnotbelocated in anareadirectly near whereexhaust
ventsexitthebuilding.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
IMPORTANT: Make-upair mustbeprovided from asourcefreeofcontaminatingfumessuchas dry
cleaningsolventfumes. Make-upair thatiscontaminatedbydrycleaningsolvent
fumeswillresultinirreparabledamagetothemotorsandother dryer components.
NOTE: Componentfailuredueto drycleaningsolventfumeswillVOIDTHEWARRANTY.

12
E. EXHAUST REQUIREMENTS
Exhaust ductwork shouldbedesigned and installed by a qualified professional. Improperly sized ductwork will
create excessive back pressure which results in slow drying, increased use of energy, and shutdown of the
burner by the airflow (sail) switch, burner hi-limits, or lint chamber hi-limit protector thermostat. The dryer must
be installed with a proper exhaust duct connection to the outside.
Where possible, it is suggested to provide a separate (single) exhaust duct for each dryer.
CAUTION: Thisdryerproduces combustible lint and mustbeexhaustedtotheoutdoors.
CAUTION: IMPROPERLYSIZEDORINSTALLEDEXHAUSTDUCTWORK CAN
CREATEAPOTENTIALFIREHAZARD.
CAUTION: DRYER MUSTBEEXHAUSTEDTOTHE OUTDOORS.
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. The shape of the ductwork is not critical so long as the minimum cross
section area is provided. Single or independent dryer venting is recommended.
It is suggested that the use of 90° turns be avoided; use 30° or 45° angles instead.
The 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.
IMPORTANT: Whenconnecting ductwork to thedryerexhaustduct,besure that when screwsare
usedthey DONOT restricttheoperation (both opening andclosing)ofthedamper.
NOTE: Whentheexhaustductworkpassesthroughawall,ceiling,orroofmadeofcombustible
materials,theopeningmustbe2-inches(5.08 cm) larger than theduct(allthewayaround).
Theductmustbecenteredwithinthisopening.
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 shouldbe
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 (i.e., roof or ground level).
IMPORTANT: DONOTuse screens,louvers,or caps ontheoutside opening of theexhaust
ductwork.
IMPORTANT: Exhaust back pressure measuredby a manometer at the dryerexhaust duct area must
beno less than 0 and mustnotexceed0.3 inches (0.74 mb) of water column
(W.C.).

13
SINGLEDRYERVENTING
IMPORTANT: Forexhaustduct runs over 20 feet(6.1meters)aminimumsizeof10-inches(25.4
cm) must be used.
HORIZONTAL VENTING
When a single 8-inch (20.32 cm) horizontal vent is used, the ductwork to the outlet cannot exceed 20 feet (6.1
meters), refer to Illus. Abelow. This calculation of 20 feet (6.1 meters) compensates or allows for the use of
a maximum of only one (1) elbow, (which is the outside outlet protection).
Illus. A
IMPORTANT: Exhaustback pressure measuredbyamanometer at the dryerexhaustductarea must
beno less than 0 and must notexceed0.3 inches (0.74 mb) of water column
(W.C.).

14
VERTICAL VENTING
When vertical single 10-inch (25.4 cm) venting is used (refer to Illus. B below), the ductwork from the dryer to
the outside outlet cannotexceed 40 feet (12.19 meters). This calculation compensates for the use of a maximum
of three (3) elbows including the two (2) elbows creating the 180° (turned downward) outside outlet.
Illus. B
If the length of the duct run or quantity of elbows used exceeds the above noted specifications, the
cross-sectional area of the ductwork must be increased in proportion to the number of elbows or duct run
added.
IMPORTANT:Forextendedductworkruns, the crosssectionareaof the ductcanonlybe increased
toanextent. Forextendedductworkruns,a professional heating, venting, and air
conditioning(HVAC)firmshouldbeconsultedfor properventinginformation.
IMPORTANT: Exhaust back pressure measuredby a manometer at the dryerexhaust duct area must
beno less than 0 and must notexceed0.3 inches (0.74 mb) of water column
(W.C.).

15
MULTIPLE DRYER (COMMON) VENTING
If it is not feasible to provide separate exhaust ducts for each dryer, ducts for individual dryers may be channeled
into a common main duct. Each dryer is provided with a back draft damper. The individual ducts should enter
the bottom or side of the main duct at an angle not more than 45° in the direction of the airflow.
The main common duct may be any shape so long as the minimum cross-sectional area is provided. The main
duct should be tapered with the diameter increasing before each individual 8-inch (20.32 cm) duct is added
(refer to Illus. C for horizontal venting and Illus. D for vertical venting).
IMPORTANT: No more thanfour (4) dryers maximum shouldbeconnected toone(1)main
commonductwithaverticalrun.
NOTE: Distancebetweendryersingleducts being connected to themaincommonductmust bea
minimumof34-1/4”(87 cm) dryerwidth.
Ductwork shouldbelaid outinsucha manner whereallowancesare made atrearareaof the
dryerforremovalof rear service panels orguards.
The illustrations on page 16 show the minimum cross section area for multiple dryer venting. These figures
must be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous
elbows or is unusually long.
IMPORTANT: Forextended ductwork runs,thecrosssection area oftheductcan only beincreased
toanextent. Forextendedductworkruns,a professional heating, venting, and air
conditioning(HVAC)firmshouldbeconsultedforproperventinginformation.
Refer to page 16 for Multiple Dryer Horizontal Venting and Vertical Venting examples/illustrations.
IMPORTANT: Exhaustback pressure measuredbyamanometer at the dryerexhaustductarea must
beno less than 0 and must notexceed0.3 inches (0.74 mb) of water column
(W.C.).

16
HORIZONTAL VENTING
Illus. C
VERTICAL VENTING
Illus. D