Maytag Clothes Dryer MDG31 User Manual

MDG31 / MDG51 / MDG77  
Installation/Operator Manual  
AVERTISSEMENT:Assurez-vous de bien  
suivre les instructions données dans cette  
notice pour réduire au minimum le risque  
d’incendie ou d’explosion ou pour éviter  
tout dommage matériel, toute blessure ou  
la mort.  
WARNING: For your safety the information  
in this manual must be followed to  
minimize the risk of fire or explosion and  
to prevent property damage, personal  
injury or death.  
— Do not store or use gasoline or other  
flammable vapors and liquids in the  
vicinity of this or any other appliance.  
Ne pas entreposer ni utiliser d’essence  
ni d’autres vapeurs ou liquides  
inflammables à proximité de cet  
appareil ou de tout autre appareil.  
— WHAT TO DO IF YOU SMELL GAS:  
QUE FAIRE SI VOUS SENTEZ UNE  
ODEUR DE GAZ:  
G
Do not try to light any appliance.  
Do not touch any electrical switch;  
G
do not use any phone in your  
building.  
Clear the room, building or area of  
all occupants.  
Immediately call your gas supplier  
from a neighbor’s phone. Follow  
the gas supplier’s instructions.  
If you cannot reach your gas  
G
Ne pas tenter d’allumer d’appareils.  
Ne touchez à aucun interrupteur. Ne  
pas vous servir des téléphones se  
trouvant dans le bâtiment.  
Évacuez la pièce, le bâtiment ou la  
G
G
G
G
zone.  
G
Appelez immédiatement votre  
fournisseur de gaz depuis un voisin.  
Suivez les instructions du fournisseur.  
Si vous ne pouvez rejoindre le  
fournisseur de gaz, appelez le service  
des incendies.  
G
supplier, call the fire department.  
G
— Installation and service must be  
performed by a qualified installer,  
service agency or the gas supplier.  
L’installation et l’entretien doivent être  
assurés par un installateur ou un  
service d’entretien qualifié ou par le  
fournisseur de gaz.  
RETAIN THESE  
INSTRUCTIONS IN A  
SAFE PLACE FOR  
FUTURE REFERENCE  
Part No. 113430-10  
 
State of California Proposition 65 Warnings:  
Table of Contents ________  
WARNING: This product contains a chemical known  
to the State of California to cause cancer.  
WARNING: This product contains a chemical known  
to the State of California to cause birth defects or other  
reproductive harm.  
IMPORTANT  
You must disconnect and lockout the electric supply  
and the gas 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 standards.  
Please observe all safety precautions displayed on  
the equipment and/or specified in the installation  
manual included with the dryer.  
Before installation, check that the local distribution  
conditions, nature of gas and pressure, and  
adjustment of the appliances are compatible.  
CAUTION  
Dryer(s) should never be left unattended while in  
operation.  
“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 inadéquat et  
dangereux.»  
WARNING  
Children should not be allowed to play on or near  
the dryer(s). Children should be supervised if near  
dryer(s) in operation.  
Under no circumstances should the dryer door  
switch(es), lint door/drawer switch(es), or heat safety  
circuit(s) ever be disabled.  
The dryer must never be operated with any of the  
back guards, outer tops, or service panels removed.  
Personal injury or fire could result.  
The dryer must never be operated without the lint  
filter/screen in place, even if an external lint collection  
system is used.  
List of Acronyms _____________________________  
FOR YOUR SAFETY  
Do not dry mop heads in the dryer. Do not use  
dryer in the presence of dry cleaning fumes.  
HVAC Heating, Ventilating, and Air-Conditioning  
in wc  
Inches of Water Column  
L.C.D. Liquid Crystal Display  
L.E.D. Light Emitting Diode  
The dryers must not be installed or stored in an area  
where it will be exposed to water and/or weather.  
L.P.  
OSHA Occupational Safety and Health Administration  
UL Underwriters Laboratory  
Liquid Propane  
The wiring diagram for the dryer is located behind  
the control panel.  
113430-10  
Telephone: (641) 787-7000  
3
 
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.  
Safety Precautions ____________________  
Warning  
For your safety, the information in this manual  
!
must be followed to minimize the risk of fire or  
explosion and to prevent property damage, personal injury,  
or loss of life.  
Warning  
The collection of lint in the burner area and  
exhaust ductwork can create a potential fire  
hazard.  
The dryer must never be operated with any of the back  
guards, outer tops, or service panels removed. Personal  
injury or fire could result.  
!
Failure to properly install, maintain, and/or operate dryer  
according to this manual and operator’s manuals included  
with dryer may result in conditions which can cause serious  
injury, death and/or property damage.  
For personal safety, the dryer must be electrically grounded  
in accordance with local and/or country codes. In the absence  
of these codes use 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.  
Do not store or use gasoline or other flammable vapors and  
liquids in the vicinity of this or any other appliance.  
Note  
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.  
Failure to electrically ground the dryer properly will  
void the warranty.  
!
Warning  
What To Do If You Smell Gas:  
• Do not try to light any appliance.  
Personal injury or fire could result should the dryer  
door switch, lint door/drawer, or heat safety circuit  
ever be disabled.  
!
• Do not touch any electrical switch.  
• Do not use any phone in your building.  
• Clear the room, building, or area of all occupants.  
Remove articles from the dryer as soon as the drying cycle  
has been completed.  
• Immediately call your gas supplier from a neighbor’s  
phone. Follow the gas supplier’s instructions.  
Warning  
Articles left in the dryer after the drying and cooling  
cycles have been completed can create a fire  
hazard.  
!
• If you cannot reach your gas supplier, call the fire  
department.  
Installation and service must be performed by a qualified  
installer, service agency, or gas supplier.  
For safety, proper operation, and optimum performance, the  
dryer must not be operated with a load less than 66% of its  
rated capacity.  
Dryers must be exhausted to the outdoors.  
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  
You must disconnect and lockout the electric  
!
supply and the gas 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 standards.  
Warning  
Dry only water washed fabrics. Do not dry articles  
!
spotted or washed in dry cleaning solvents,  
combustible detergents, or “all purpose” cleaner.  
Explosion could result.  
Important  
The 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).  
!
Do not dry rags or articles coated or contaminated with  
gasoline, kerosene, oil, paint, or wax. Explosion could  
result.  
Items that have been spotted or soaked with vegetable or  
cooking oil constitute a fire hazard and should not be  
placed in a tumble dryer.  
The operation of this appliance may affect the operation of  
other types of gas appliances, which take their air for safe  
combustion from the same room. If in doubt, consult the  
appliance manufacturer(s).  
Do not dry mop heads. Contamination by wax or  
flammable solvents will create a fire hazard.  
Use this dryer only for its intended purpose, drying fabrics.  
Do not use heat for drying articles that contain plastic,  
foam, sponge rubber, or similarly textured rubber  
materials. Drying in a heated tumbler may damage  
plastics or rubber and also may be a fire hazard.  
The “Cool Down” Cycle of tumble dryers should be used to  
reduce the temperature of the items. They should not be  
removed from the tumble dryer or piled or stacked while hot.  
Fabric softeners or similar products should not be used in a  
tumble dryer to eliminate the effects of static electricity, unless  
this practice is specifically recommended by the manufacturer  
of the fabric softener or product.  
4
Maytag Co.  
113430-10  
 
 
Warning  
To reduce the risk of personal injury, install  
lockable doors to prevent public access to the rear  
of the dryers.  
NOTES ____________________________________  
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!
Exhaust duct outlet should be checked periodically for  
blockages, and if any found, removed.  
Important  
A means of restraint must be used to prevent  
straining of the gas supply when the appliance is  
moved.  
!
An external means of power removal (disconnect device)  
must be provided by the installer.  
CE ONLY  
Important  
This appliance must only be installed and  
operated in the country of destination indicated on  
the dryer’s data plate. If the appliance is to be installed and  
operated in a country other than the one indicated on the  
data plate, a data plate amendment must be obtained from  
Maytag.  
!
Warning  
This appliance must only operate with the gas type  
!
indicated on the dryer’s data plate. If the  
appliance is converted (gas type is changed), a data plate  
amendment must be obtained from Maytag.  
This appliance may cause spillage of products of  
combustion from an open-flue appliance fitted in the same  
room, and that such an appliance shall be tested for  
clearance of products with the appliance in operation and  
all windows and doors closed.  
NOTES ____________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
___________________________________________  
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113430-10  
Telephone: (641) 787-7000  
5
 
MDG31 Specifications ________________________________________________________________  
13.61 kg  
76.20 cm  
68.58 cm  
312.62 L  
0.18 kW  
0.37 kW  
49.23 cm  
37.78 cm  
MAXIMUM CAPACITY (DRY WEIGHT)  
TUMBLER DIAMETER  
30 lb  
30”  
TUMBLER DEPTH  
27”  
TUMBLER VOLUME  
11.04 cu ft  
1/4 hp  
1/2 hp  
19-3/8”  
14-7/8”  
TUMBLER/DRIVE MOTOR  
BLOWER/FAN MOTOR  
DOOR OPENING (DIAMETER)  
DOOR SILL HEIGHT  
WATER CONNECTION  
N / A  
DRYERS PER 20’/40’ CONTAINER  
DRYERS PER 48’/53’ TRUCK  
VOLTAGE AVAILABLE  
12 / 28  
34 / 38  
120V  
285 lb  
1ø 2w 60 Hz  
129.27 kg  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
140.61 kg  
10.19 cmm  
13,860 kcal/hr  
15.24 cm  
310 lb  
360 cfm  
55,000 Btu/hr  
6”  
HEAT INPUT  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
INLET PIPE CONNECTION  
VOLTAGE AVAILABLE  
N / A  
N / A  
1/2” M.N.P.T.  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
OVEN SIZE  
N / A  
kcal/hr  
kW  
Btu/hr  
VOLTAGE AVAILABLE  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
STEAM CONSUMPTION  
OPERATING STEAM PRESSURE  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
BOILER HORSEPOWER (NORMAL LOAD)  
SUPPLY CONNECTION  
N / A  
RETURN CONNECTION  
Shaded areas are stated in metric equivalents  
5/13/05  
Note  
!
The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.  
6
Maytag Co.  
113430-10  
 
 
MDG31 Specifications ________________________________________________________________  
113430-10  
Telephone: (641) 787-7000  
7
 
MDG51 Specifications _________________________________________________________________  
22.68 kg  
93.98 cm  
65.41 cm  
453.64 L  
0.75 kW  
0.37 kW  
69.55 cm  
40.64 cm  
MAXIMUM CAPACITY (DRY WEIGHT)  
TUMBLER DIAMETER  
TUMBLER DEPTH  
50 lb  
37”  
25-3/4”  
16.02 cu ft  
1 hp  
TUMBLER VOLUME  
TUMBLER/DRIVE MOTOR  
BLOWER/FAN MOTOR  
DOOR OPENING (DIAMETER)  
DOOR SILL HEIGHT  
1/2 hp  
27-3/8”  
16”  
WATER CONNECTION  
3/4”-11.5 NH (North America)  
3/4” B.S.P.T. (Outside North America)  
10 / 22  
DRYERS PER 20’/40’ CONTAINER  
DRYERS PER 48’/53’ TRUCK  
VOLTAGE AVAILABLE  
28 / 30  
120V 1ø 2w 60 Hz  
247.21 kg  
256.28 kg  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
545 lb  
565 lb  
14.87 cmm  
22,680 kcal/hr  
20.32 cm  
525 cfm  
90,000 Btu/hr  
8”  
HEAT INPUT  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
INLET PIPE CONNECTION  
N / A  
N / A  
1/2” M.N.P.T.  
1/2” F.B.S.P.T. (CE and Australia Only)  
VOLTAGE AVAILABLE  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
OVEN SIZE  
N / A  
kcal/hr  
kW  
Btu/hr  
VOLTAGE AVAILABLE  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
STEAM CONSUMPTION  
OPERATING STEAM PRESSURE  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
BOILER HORSEPOWER (NORMAL LOAD)  
SUPPLY CONNECTION  
N / A  
RETURN CONNECTION  
Shaded areas are stated in metric equivalents  
11/23/05  
Note  
!
The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.  
8
Maytag Co.  
113430-10  
 
 
MDG51 Specifications _________________________________________________________________  
113430-10  
Telephone: (641) 787-7000  
9
 
MDG77 Specifications ______________________________________________________________  
34.02 kg  
93.98 cm  
90.17 cm  
625.52 L  
0.75 kW  
0.37 kW  
69.53 cm  
40.64 cm  
MAXIMUM CAPACITY (DRY WEIGHT)  
TUMBLER DIAMETER  
TUMBLER DEPTH  
75 lb  
37”  
35-1/2”  
22.09 cu ft  
1 hp  
TUMBLER VOLUME  
TUMBLER/DRIVE MOTOR  
BLOWER/FAN MOTOR  
DOOR OPENING (DIAMETER)  
DOOR SILL HEIGHT  
1/2 hp  
2 7-3/8 ”  
16”  
WATER CONNECTION  
3/4”-11.5 NH (North America)  
3/4” B.S.P.T. (Outside North America)  
DRYERS PER 20’/40’ CONTAINER  
DRYERS PER 48’/53’ TRUCK  
VOLTAGE AVAILABLE  
9 / 20  
25 / 27  
120V  
600 lb  
1ø 2w 60 Hz  
272.16 kg  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
281.23 kg  
15.86 cmm  
27,720 kcal/hr  
20.32 cm  
620 lb  
560 cfm  
110,000 Btu/hr  
8”  
HEAT INPUT  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
INLET PIPE CONNECTION  
N / A  
N / A  
1/2” M.N.P.T.  
1/2” F.B.S.P.T. (CE and Australia Only)  
VOLTAGE AVAILABLE  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
OVEN SIZE  
N / A  
kcal/hr  
kW  
Btu/hr  
VOLTAGE AVAILABLE  
APPROXIMATE NET WEIGHT  
APPROXIMATE SHIPPING WEIGHT  
AIRFLOW  
STEAM CONSUMPTION  
OPERATING STEAM PRESSURE  
EXHAUST CONNECTION (DIAMETER)  
COMPRESSED AIR CONNECTION  
COMPRESSED AIR VOLUME  
BOILER HORSEPOWER (NORMAL LOAD)  
SUPPLY CONNECTION  
N / A  
RETURN CONNECTION  
Shaded areas are stated in metric equivalents  
11/23/05  
Note  
!
The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.  
10  
Maytag Co.  
113430-10  
 
 
MDG77 Specifications ______________________________________________________________  
113430-10  
Telephone: (641) 787-7000  
11  
 
Installation Procedures _______________  
Unpacking/Setting Up _________________  
Remove protective shipping material (i.e., plastic wrap and  
optional shipping box) from the dryer.  
Installation should be performed by competent professional  
in accordance with local, state, and country codes. In the  
absence of these codes, the installation must conform to  
applicableAmerican 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 (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).  
Important  
Dryer must be transported and handled in an  
upright position at all times.  
!
The dryer can be moved to its final location while still attached  
to the skid or with the skid removed. To remove the skid from  
the MDG31, MDG51, or MDG77, locate and remove the 2  
bolts securing the base of the dryer to the wooden skid. One  
is located at the center rear and the other is at the center  
front.  
Location Requirements _______________  
With the skid removed, use caution and assure all four  
leveling legs are fully retracted if the dryer is to be slid into its  
final position.  
Before installing the dryer, be sure the location conforms to  
local, state, and country codes. In the absence of such codes  
or ordinances the location must conform with the National  
Fuel Gas CodeANSI.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).  
Leveling Dryer  
The dryer is equipped with 4 leveling legs, 1 at each corner of  
the base. For optimum performance the dryer should be  
level front-to-back and side-to-side.  
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.  
Dryer Enclosure Requirements _______  
Commercial Type II (MDG31, MDG51, MDG77)  
The dryer must not be installed or stored in an area where it  
will be exposed to water and/or weather.  
Bulkheads and partitions should be made of noncombustible  
material.  
Dryers installed in residential garages must be elevated  
18-inches (45.72 cm) above the floor.  
Note  
Allowances must be made for opening the control  
door.  
Provisions for adequate air supply must be provided as noted  
in this manual (refer to Fresh Air Supply Requirements  
section).  
!
Clearance provisions must be made from combustible  
construction as noted in this manual (refer to Dryer Enclosure  
Requirements section).  
Provisions must be made for adequate clearances for  
servicing and for operation as noted in this manual (refer to  
Dryer Enclosure Requirements section).  
The dryer must be installed with a proper exhaust duct  
connection to the outside as noted in this manual (refer to  
Exhaust Requirements section).  
The dryer must be located in an area where correct exhaust  
venting can be achieved as noted in this manual (refer to  
Exhaust Requirements section).  
A
The requirement to allow the door to open completely for  
the MDG31 is 33-inches (83.8 cm), and the MDG51 and  
MDG77 are 40-inches (101.6 cm).  
Important  
The dryer should be located where a minimum  
B
C
A minimum overhead clearance of 6-inches (15.24 cm)  
is required.  
!
amount of exhaust ducting will be necessary.  
Dryer should be positioned a minimum of 12-inches  
(30.48 cm) away from the nearest obstruction. 24-inches  
(60.96 cm) is recommended for ease of installation,  
maintenance, and service.  
The dryer must be installed with adequate clearance for air  
openings into the combustion chamber.  
Caution  
D
E
1/16” (1.5875 mm) minimum is required.  
This dryer produces combustible lint and must be  
exhausted to the outdoors. Every 6 months,  
Flooring should be level or below dryer cabinet for ease  
of removing panels during maintenance.  
!
inspect the exhaust ducting and remove any lint buildup.  
F
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, along  
with the removal of panels during maintenance.  
Important  
The 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).  
!
12  
Maytag Co.  
113430-10  
 
       
Domestic Type I (MDG31, MDG51 Only)  
A = 10-inches (25.4 cm)  
B = 11-inches (27.94 cm)  
EXAMPLE: For a bank of 4 MDG31 dryers, 2 unrestricted  
openings measuring 10-inches by 11-inches (25.4 cm by  
27.94 cm) are acceptable.  
A = 6-inches (15.24 cm)  
B = 24-inches (60.96 cm)  
Important  
Make-up air must be 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.  
EXAMPLE: For MDG51, 2 unrestricted openings measuring  
6-inches by 24-inches (15.24 cm by 60.96 cm) are acceptable.  
!
If a closet door is installed: unobstructed air openings are  
required. The air openings shall be located 3-inches  
(7.62 cm) from the lower opening (above floor level) and upper  
opening (below ceiling). The total free area of the air openings  
in the door shall not be less than 179 inch2 (1154.836 cm2)  
for MDG31; and 293 inch2 (1890.319 cm2) for MDG51.  
Louvered doors with equivalent air openings are acceptable.  
Exhaust Requirements ________________  
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, 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.  
No other fuel-burning appliance shall be installed in the same  
closet as the dryer.  
Fresh Air Supply Requirements _______  
The dryer shall not be exhausted into any gas vent, chimney,  
wall, ceiling or concealed space of a building.  
When the dryer is operating, it draws in room air, heats it,  
passes this air through the tumbler, and exhausts it out of the  
building. Therefore, the room air must be continually  
replenished from the outdoors. If the make-up air is  
inadequate, drying time and drying efficiency will be adversely  
affected. Ignition problems and sail switch “fluttering”  
problems may result, as well as premature motor failure from  
overheating. The dryer must be installed with provisions for  
adequate combustion and make-up air supply.  
Caution  
This dryer produces combustible lint and must be  
exhausted to the outdoors.  
!
Improperly sized or installed exhaust ductwork can create  
a potential fire hazard.  
Air supply (make-up air) must be given careful consideration  
to ensure proper performance of each dryer. As a general  
rule, an unrestricted air entrance from the outdoors of 110  
inch2 (710 cm2) is required for each MDG77, 90 inch2 (580  
cm2) for each MDG51, 55 inch2 (354 cm2) for each MDG31.  
(Based on 1 inch2 [6.5 cm2] per 1,000 Btu [252 kcal].)  
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. There should be a minimum  
6-inch (15.24 cm) clearance between the back guard and the  
first bend in the ductwork for ease of servicing. Single or  
independent dryer venting is recommended. It is suggested  
that the use of 90° turns be avoided; use 30° and/or 45°  
bends instead. The radius of the elbows should preferably  
be 1-1/2 times the diameter of the duct. All ductwork should  
be smooth inside with no projections from sheet metal  
screws or other obstructions, which will collect lint. When  
adding ducts, overlap the duct being connected. All ductwork  
joints must be taped to prevent moisture and lint from  
escaping into the building. Back draft dampers must be  
installed in all commonly ducted systems. Inspection doors  
should be installed at strategic points in the exhaust ductwork  
for periodic inspection and cleaning of lint from the ductwork.  
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.  
To compensate for the use of registers or louvers used over  
the openings, this area must be increased by approximately  
33%. Make-up air openings should not be located in an area  
directly near where exhaust vents exit the building.  
Allowances must be made for remote or constricting  
passageways or where dryers are located at high altitudes  
or predominantly low pressure areas.  
Important  
It is recommended that exhaust or booster fans  
Note  
!
Component failure due to dry cleaning solvent  
fumes will void the warranty.  
not be used in the exhaust ductwork system.  
!
113430-10  
Telephone: (641) 787-7000  
13  
 
   
Important  
Vertical Venting  
Exhaust back pressure measured by a  
manometer/magnehelic in the exhaust duct must  
be no less than 0 and must not exceed 0.6 in wc (1.48 mb).  
When vertical dryer venting is used, the length of the ductwork  
from the dryer to the outside exhaust outlet, must not exceed  
12 feet (3.66 meters). The minimum diameter of this ductwork  
must be at least 6-inches (15.24 cm) for MDG31, and 8-inches  
(20.32 cm) for MDG51 and MDG77. Including tumbler/dryer  
elbow connections or elbows used for outside protection from  
the weather, no more than 3 elbows should be used in the  
exhaust duct run. If more than 3 elbows are used, the  
cross-sectional area of the ductwork must be increased.  
!
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.  
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 26 gauge  
(0.0195-inches [0.50 mm]) thick.”  
The ductwork for this appliance must be suitable for the  
appliance category in accordance with national installation  
regulations of the country of destination.  
Outside Ductwork Protection  
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 (refer  
to the diagram).  
A = 20 feet (6.10 meters)  
B = MDG31: 6-inches (15.24 cm)  
MDG51, MDG77: 8-inches (20.32 cm)  
C = 12 feet (3.66 meters)  
D = MDG31: 6-inches (15.24 cm)  
MDG51, MDG77: 8-inches (20.32 cm)  
Important  
Do not use screens, louvers, or caps on the  
outside opening of the exhaust ductwork.  
!
Single Dryer Venting  
Important  
For extended ductwork runs, the cross-sectional  
!
area of the ductwork can only be increased to an  
extent. When the ductwork approaches the maximum  
limits as noted in this manual, a professional HVAC firm  
should be consulted for proper venting information.  
Horizontal Venting  
NOTE 1 Opening from combustible materials must be 2-inches (5.08 cm)  
larger than the duct (all the way around). The duct must be centered  
within this opening.  
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest  
obstruction.  
When horizontal dryer venting is used, the length of the  
ductwork from the dryer to the outside exhaust outlet, must  
not exceed 20 feet (6.10 meters). The minimum diameter of  
this ductwork must be at least 6-inches (15.24 cm) for MDG31,  
and 8-inches (20.32 cm) for MDG51 and MDG77. Including  
tumbler/dryer elbow connections or elbows used for outside  
protection from the weather, no more than 1 elbow should be  
used in the exhaust duct run. If more than 1 elbow is used,  
the cross-sectional area of the ductwork must be increased.  
Multiple Dryer (Common) Venting  
Important  
For extended ductwork runs, the cross-sectional  
!
area of the ductwork can only be increased to an  
extent. When the ductwork approaches the maximum  
limits as noted in this manual, a professional HVAC firm  
should be consulted for proper venting information.  
If it is not feasible to provide separate exhaust ducts for each  
dryer, ducts from individual dryers may be channeled into a  
“common main duct.” The individual ducts should enter the  
bottom or side of the main duct at an angle not more than 45º  
in the direction of airflow. The main duct should be tapered,  
with the diameter increasing before each individual duct is  
added.  
14  
Maytag Co.  
113430-10  
 
Important  
No more than 4 dryers should be connected to 1  
main common duct.  
Electrical Information _________________  
Electrical Requirements  
!
All electrical connections must be made by a properly licensed  
and competent electrician. This is to ensure that the electrical  
installation is adequate and conforms to local, state, and  
national regulations or codes of the country of origin. In the  
absence of such codes, all electrical connections, materials,  
and workmanship must conform to the applicable  
requirements of 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.  
The illustration below shows the minimum cross-sectional  
area for multiple dryer round or square venting. These figures  
must be increased if the main duct run from the last dryer to  
where it exhausts to the outdoors is longer than 12 feet (3.66  
meters) or has more than 1 elbow in it.  
A = MDG31 6-inch (15.24 cm)  
MDG51 8-inch (20.32 cm)  
MDG77 8-inch (20.32 cm)  
B = 12 feet (3.66 meters)  
Important  
Failure to comply with these codes or ordinances,  
and/or the requirements stipulated in this manual  
can result in personal injury or component failure.  
!
Note  
Component failure due to improper installation will  
void the warranty.  
!
Each dryer should be connected to an independently protected  
branch circuit. The dryer must be connected with copper  
wire only. Do not use aluminum wire, which could cause a  
fire hazard. The copper conductor wire/cable must be of proper  
ampacity and insulation in accordance with electric codes  
for making all service connections.  
NOTE 1 Opening from combustible materials must be 2-inches (5.08 cm)  
larger than the duct (all the way around). The duct must be centered  
within this opening.  
Note  
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest  
obstruction.  
The use of aluminum wire will void the warranty.  
!
An individual ground circuit must be provided to  
each dryer, do not daisy chain.  
Multiple Dryer Venting with 6-Inch (15.24 cm) Diameter  
Component failure due to improper voltage application will  
void the warranty.  
360 cfm (10.19 cmm) Exhaust Connections at Common Duct  
NUMBER OF DRYERS  
4
3
2
54  
1
30  
The manufacturer reserves the right to make changes in  
specifications at any time without notice or obligation.  
SQ IN  
80  
80  
MINIMUM CROSS-  
SECTIONAL AREA  
SQ CM  
IN  
516.1  
10  
516.1  
10  
348.4  
8
193.55  
6
MINIMUM ROUND  
DUCT DIAMETER  
Important  
CM  
25.4  
25.4  
20.32  
15.24  
A separate protected circuit must be provided to  
each dryer.  
!
Multiple Dryer Venting with 8-Inch (20.32 cm) Diameter  
525 cfm (14.87 cmm) Exhaust Connections at Common Duct  
The dryer must be connected to the electric supply shown  
on the data label. In the case of 208 VAC or 240 VAC, the  
supply voltage must match the electric service  
specifications of the data label exactly.  
NUMBER OF DRYERS  
4
3
2
1
54  
SQ IN  
120  
120  
80  
MINIMUM CROSS-  
SECTIONAL AREA  
SQ CM  
IN  
774.2  
12  
774.2  
12  
516.1  
10  
348.4  
8
MINIMUM ROUND  
DUCT DIAMETER  
CM  
30.48  
30.48  
25.4  
20.32  
Important  
The wire size must be properly sized to handle the  
related current.  
!
Multiple Dryer Venting with 8-Inch (20.32 cm) Diameter  
560 cfm (15.86 cmm) Exhaust Connections at Common Duct  
Warning  
NUMBER OF DRYERS  
4
3
2
1
54  
SQ IN  
120  
120  
80  
MINIMUM CROSS-  
SECTIONAL AREA  
208 VAC and 240 VAC are not the same. Any  
!
SQ CM  
IN  
774.2  
12  
774.2  
12  
516.1  
10  
348.4  
8
damage done to dryer components due to  
improper voltage connections will automatically void the  
warranty.  
MINIMUM ROUND  
DUCT DIAMETER  
CM  
30.48  
30.48  
25.4  
20.32  
113430-10  
Telephone: (641) 787-7000  
15  
 
 
Warning (Gas Models Only)  
Grounding  
Dryers built for use with a voltage between 200  
and 240 must verify the input voltage during  
A ground (earth) connection must be provided and installed  
in accordance with local, state, and national regulations or  
codes of the country of origin. In the absence of these codes,  
grounding must conform to applicable requirements of the  
National Electrical CodeANSI/NFPANO. 70-LATEST EDITION,  
or in Canada, the installation must conform to applicable  
Canada Standards: Canadian Electrical Codes Parts 1 & 2  
CSAC22.1-1990 or LATEST EDITION. The ground connection  
may be to a proven earth ground at the location service panel.  
!
installation. If the nominal voltage is outside of the  
medium tolerances shown on the diagram below, adjust  
the autotransformer, located near the burner assembly. To  
adjust the autotransformer wiring, place the red wire on the  
appropriate tap (HIGH, MED, LOW) of the autotransformer.  
For additional wiring details, refer to the electrical diagram  
located on the inside of the control panel.  
For added personal safety, when possible, it is suggested  
that a separate ground wire (size per local codes) be  
connected from the ground connection of the dryer to a  
grounded cold water pipe. Do not ground to a gas pipe or hot  
water pipe. The grounded cold water pipe must have  
metal-to-metal connection all the way to the electrical ground.  
If there are any nonmetallic interruptions, such as, a meter,  
pump, plastic, rubber, or other insulating connectors, they  
must be jumped out with a wire (size per local codes) and  
securely clamped to bare metal at both ends.  
LINE VOLTAGE  
TERM  
50 Hz  
60 Hz  
260  
226  
283  
249  
HIGH  
MED  
LOW  
239  
208  
260  
230  
217  
189  
236  
208  
Important  
For personal safety and proper operation, the dryer  
must be grounded.  
!
Electrical Service Specifications  
Gas Models Only  
Provisions are made for ground connection in each dryer at  
the electrical service connection area.  
ELECTRICAL SERVICE SPECIFICATIONS  
IMPORTANT: 208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering,  
Warning  
specify exact voltage.  
Electrical Grounding Instructions – This dryer is  
equipped with a 3-prong (grounding) plug for your  
protection against shock hazard and should be plugged  
directly into a properly grounded 3-prong receptacle. Do  
not cut or remove the grounding prong from this plug.  
NOTES: A.  
When fuses are used they must be dual element, time delay, current  
limiting, class RK1 or RK5 ONLY. Calculate/determine correct fuse  
value, by applying either local and/or National Electrical Codes to  
listed appliance amp draw data.  
!
B. Circuit breakers are thermal-magnetic (industrial) motor curve type  
ONLY. For others, calculate/verify correct breaker size according to  
appliance amp draw rating and type of breaker used.  
C. Circuit breakers for 3-phase (3ø) dryers must be 3-pole type.  
Electrical Connections  
A wiring diagram is located behind the control panel for  
connection data.  
APPROX.  
AMP DRAW  
SERVICE  
VOLTAGE  
WIRE  
SERVICE  
CIRCUIT  
BREAKER  
PHASE  
60 Hz  
10.3  
15.6  
15.6  
50 Hz  
MDG31  
2
If local codes permit, power to the dryer can be made by the  
use of a flexible UL listed power cord/pigtail (wire size must  
conform to rating of dryer), or the dryer can be hard wired  
directly to the service breaker panel. In both cases, a strain  
relief must be installed where the wiring enters the dryer.  
120  
120  
120  
1ø  
1ø  
1ø  
15  
20  
20  
MDG51  
2
MDG77  
2
For CE Models Only  
12/18/08  
The means for disconnection from the supply must be  
incorporated into wiring having a minimum contact separation  
of 3.0 mm in all poles.  
Single-Phase (1ø)  
Wiring Connections/Hookup  
The electrical input connections are made into the rear service  
box located at the upper right area of the dryer. The ground  
connection is made to the copper lug, also provided in this  
box. To gain access, the service box cover must be removed.  
16  
Maytag Co.  
113430-10  
 
Important  
Gas Models Only  
For ease of service, the individual gas supply line  
of each dryer must have its own manual shutoff  
120-240V Application with Neutral  
!
valve.  
The dryer and its individual shutoff valve must be  
disconnected from the gas supply piping system during any  
pressure testing of that system at test pressures in excess  
of 1/2 psig (3.5 kPa) for non-CE dryers or 50 mb for CE  
dryers.  
Failure to isolate or disconnect the dryer from supply as  
noted can cause irreparable damage to the gas valve,  
voiding the warranty.  
Note  
The dryer must be isolated from the gas supply  
!
200-240V Application without Neutral  
piping system by closing its individual manual  
shutoff valve during any pressure test of the gas supply  
system at test pressures equal to or less than 1/2 psig (3.5  
kPa) for non-CE dryers or 50 mb for CE dryers.  
Warning  
Fire or explosion could result due to failure of  
isolating or disconnecting the gas supply as noted.  
!
Note  
Undersized gas piping will result in ignition  
problems, slow drying, increased use of energy,  
and can create a safety hazard.  
!
Caution  
The dryer must be connected to the type of heat/gas indicated  
on the data label and pressure must be confirmed. If this  
information does not agree with the type of gas available, do  
not operate the dryer. Contact the distributor who sold the  
dryer or contact the manufacturer.  
The dryer must be grounded. A ground lug has  
been provided for this purpose.  
!
Input connection wiring must be sized properly to handle the  
dryer’s current draw. This information is printed on the dryer’s  
data label.  
The input ratings shown on the data label are for elevations  
up to 2,000 feet (610 meters), unless elevation requirements  
of over 2,000 feet (610 meters) were specified at the time the  
dryer order was placed with the factory. The adjustment or  
conversion of dryers in the field for elevations over 2,000 feet  
(610 meters) is made by changing each burner orifice. If this  
conversion is necessary, contact the distributor who sold the  
dryer or contact the manufacturer.  
Important  
A strain relief must be used where the input wiring  
!
enters the oven assembly.  
Gas Information _______________________  
Important  
It is your responsibility to have all plumbing connections,  
materials, and workmanship conform to local and state  
regulations or codes of the country of destination. In the  
absence of such codes, all plumbing connections, materials,  
and workmanship must conform to the applicable local  
requirements. In the USA this is the National Fuel Gas Code  
ANSI Z223.1-LATEST EDITION, or in Canada, the Canadian  
Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or  
CAN/CGAB149.2-M91 (L.P. Gas) or LATEST EDITION.  
If connection to this appliance is made with a  
!
flexible hose, it must be suitable for the appliance  
category in accordance with national installation  
regulations of the country of destination, and if in doubt the  
installer must contact the supplier. The manufacturer of  
this appliance does not recommend the use of flexible gas  
supply line/hose. An external gas supply shutoff must be  
provided.  
In Australia, the fuel gas code is AS 5601/AG 601, local  
authority, gas, electricity, and any other relevant statutory  
regulations.  
CE Dryers  
There is an N.P.T. to B.S.P.T. adaptor included with each dryer,  
which must be installed to the gas inlet. The adaptor is  
shipped in the tumbler.  
It is important that gas pressure regulators meet applicable  
pressure requirements, and that gas meters be rated for the  
total amount of all the appliance Btu being supplied.  
Important  
Pipe joint compounds that resist the action of  
Important  
Failure to comply with these codes or ordinances,  
and/or the requirements stipulated in this manual,  
can result in personal injury and improper operation of the  
dryer.  
!
natural, propane, and butane gases must be used.  
!
113430-10  
Telephone: (641) 787-7000  
17  
 
 
Heat Input/Gas Consumption/Orifice (Injector) Data (For Non-CE [European] Models Only)  
Gas Specifications for Non-CE Approved Dryers**  
Nominal  
Heating Value  
Supply  
Pressure  
Gross  
Heat Input  
Burner  
Pressure  
Orifice  
(Injector)  
Quantity  
Orifice Size  
Gas  
Type  
Model  
Btu/ft3  
1,000  
2,500  
1,000  
2,500  
1,000  
2,500  
in WC  
7.0-13.0  
11.0  
Btu/hr  
55,000  
55,000  
90,000  
90,000  
110,000  
110,000  
kW  
DMS  
mm  
in WC  
3.0  
16.12  
16.12  
26.38  
26.38  
32.24  
32.24  
4.089  
2.184  
3.454  
2.994  
3.988  
2.184  
Natural  
20  
44  
29  
47  
22  
44  
1
1
2
2
2
2
MDG31  
MDG51  
MDG77  
10.0  
3.0  
*Liquid Propane  
Natural  
7.0-13.0  
11.0  
10.0  
3.0  
*Liquid Propane  
Natural  
7.0-13.0  
11.0  
10.0  
*Liquid Propane  
Shaded areas are stated in metric equivalents  
*
Gas valve’s internal regulator disabled.  
** Consult factory for elevations over 2,000 feet (610 meters) for correct orifice size.  
Heat Input/Gas Consumption/Orifice (Injector) Data (For CE [European] Models Only)  
Gas Specifications for CE Approved Dryers**  
Nominal  
Heating Value  
Supply  
Pressure  
Gross  
Heat Input  
Burner  
Pressure  
Orifice  
(Injector)  
Quantity  
Orifice Size  
mm  
Gas  
Type  
Fuel  
Consumption  
Model  
Btu/ft3  
1,000  
830  
mb  
Btu/hr  
55,000  
55,000  
55,000  
55,000  
55,000  
55,000  
55,000  
55,000  
55,000  
90,000  
90,000  
90,000  
90,000  
90,000  
90,000  
90,000  
90,000  
90,000  
110,000  
110,000  
110,000  
110,000  
110,000  
110,000  
110,000  
110,000  
110,000  
kW  
DMS  
22  
22  
22  
31  
31  
48  
48  
44  
44  
29  
29  
29  
35  
35  
50  
50  
47  
47  
22  
22  
22  
31  
31  
48  
48  
44  
44  
mb  
6.9  
9.5  
15-30  
20-35  
16.12  
16.12  
16.12  
16.12  
16.12  
16.12  
16.12  
16.12  
16.12  
26.38  
26.38  
26.38  
26.38  
26.38  
26.38  
26.38  
26.38  
26.38  
32.24  
32.24  
32.24  
32.24  
32.24  
32.24  
32.24  
32.24  
32.24  
1.557 M3/H  
1.876 M3/H  
1.876 M3/H  
1.557 M3/H  
1.876 M3/H  
1.162 kg/H  
1.162 kg/H  
1.162 kg/H  
1.162 kg/H  
2.549 M3/H  
3.071 M3/H  
3.071 M3/H  
2.549 M3/H  
3.071 M3/H  
1.901 kg/H  
1.901 kg/H  
1.901 kg/H  
1.901 kg/H  
3.115 M3/H  
3.753 M3/H  
3.753 M3/H  
3.115 M3/H  
3.753 M3/H  
2.324 kg/H  
2.324 kg/H  
2.324 kg/H  
2.324 kg/H  
3.988  
3.988  
3.988  
3.048  
3.048  
1.930  
1.930  
2.184  
2.184  
3.454  
3.454  
3.454  
2.794  
2.794  
1.778  
1.778  
1.994  
1.994  
3.988  
3.988  
3.988  
3.048  
3.048  
1.930  
1.930  
2.184  
2.184  
Natural (I2H/I2E  
)
)
)
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Natural (I2L  
)
15-30  
20  
9.5  
Natural (I2ELL  
)
830  
1,000  
830  
*Natural (I2E+  
)
25  
28-30  
37  
*Butane (I3+  
*Propane (I3+  
Butane (I3B/P  
Propane (I3P  
Natural (I2H/I2E  
Natural (I2L  
Natural (I2ELL  
)
3,175  
2,500  
3,175  
2,500  
1,000  
830  
)
28-30/50  
28-30/50  
15-30  
20-35  
15-30  
20  
18.1  
24.9  
7.2  
8.9  
8.9  
)
)
)
)
830  
1,000  
830  
*Natural (I2E+  
)
25  
28-30  
37  
*Butane (I3+  
*Propane (I3+  
Butane (I3B/P  
Propane (I3P  
Natural (I2H/I2E  
Natural (I2L  
Natural (I2ELL  
)
3,175  
2,500  
3,175  
2,500  
1,000  
830  
)
28-30/50  
28-30/50  
15-30  
20-35  
15-30  
20  
18.1  
24.9  
6.9  
9.5  
9.5  
)
)
)
)
830  
1,000  
830  
*Natural (I2E+  
)
25  
28-30  
37  
*Butane (I3+  
*Propane (I3+  
Butane (I3B/P  
Propane (I3P  
)
3,175  
2,500  
3,175  
2,500  
)
28-30/50  
28-30/50  
18.1  
24.9  
)
)
Shaded areas are stated in metric equivalents  
*
Gas valve’s internal regulator disabled.  
** Consult factory for elevations over 2,000 feet (610 meters) for correct orifice size.  
18  
Maytag Co.  
113430-10  
 
 
Important  
Piping/Connections  
Pipe joint compounds that resist the action of  
natural, L.P., and butane gases must be used.  
!
MDG31  
MDG51  
MDG77  
Test all connections for leaks by brushing on a soapy water  
solution (liquid detergent works well).  
1
1//22”  
1/2”  
1/2”  
CE dryer connections will be B.S.P.T., all others will be N.P.T.  
Warning  
There should be a minimum 6-inch (15.24 cm) clearance  
between the back guard and the first bend in the gas piping  
for ease of servicing. It is recommended that a gas shutoff  
valve be provided to the gas supply line of each dryer for ease  
in servicing.  
!
Never test for leaks with a flame!!!  
Converting from One Family  
of Gas to Another ______________________  
The size of the main gas supply line (header) will vary  
depending on the distance this line travels from the gas meter  
or, in the case of L.P. gas, the supply tank, other gas-operated  
appliances on the same line, etc. Specific information  
regarding supply line size should be determined by the gas  
supplier.  
Warning (CE Dryers)  
This appliance must only be operated with the gas  
!
type indicated on the dryer’s data plate. If the  
appliance is converted (gas type changed), a data plate  
amendment must be obtained from Maytag (dryer’s serial  
number is required to purchase a conversion kit).  
Note  
Important  
Any burner changes or conversions must be  
Undersized gas supply piping can create a low or  
inconsistent pressure, which will result in erratic  
operation of the burner ignition system.  
!
!
made by a qualified professional.  
The dryers manufactured for Belgium, Luxemburg, Greece,  
Estonia, Slovak Republic, Iceland, Malta, Poland and Cyprus  
cannot be converted from one family of gas to another.  
TYPICAL NATURALGAS INSTALLATION  
Conversion from Natural Gas  
to Propane or Butane Gas  
The following conversion allows the dryer to be operated with  
either propane, butane, or LPG. The use of gas valve kit (P/N  
140414) disables the internal regulator of the gas valve.  
Therefore, the gas supply is ungoverned and an external  
regulator must be provided at the source of the supply  
(example L.P. tank) or the gas supply line to the dryer. The  
type of L.P. kit supplied will depend on the country the dryer is  
installed in.  
Parts Required for Conversion:  
Description  
TYPICAL L.P. GAS INSTALLATION  
P/N  
Qty  
Unregulated Gas Conversion Kit**  
OR  
140414  
***  
Regulated L.P. Gas Conversion Kit****  
Burner Orifice (Injector)  
L.P. Conversion Label  
140416  
*
114515  
***  
***  
1
*
** Required for unregulated propane or butane only.  
*** MDG31 will require 1; MDG51 and MDG77 will require 2.  
**** Required for regulated LPG or propane only.  
Instructions  
Disconnect electrical power to the dryer.  
Close all shutoff valves in dryer’s gas supply line.  
Consistent gas pressure is essential at all gas connections.  
It is recommended that a 3/4-inch (19.05 mm) pipe gas loop  
be installed in the supply line servicing a bank of dryers. An  
in-line pressure regulator must be installed in the gas supply  
line (header) if the (natural) gas pressure exceeds 13.0 in wc  
(32.34 mb) pressure.  
Important  
The MDG51 and MDG77 will require that the  
following procedures be performed on both  
burner assemblies.  
!
A plugged tap, accessible for a pressure gauge connection,  
must be installed in the main gas supply line immediately  
upstream of the dryers.  
Open the panel located just below the loading door.  
113430-10  
Telephone: (641) 787-7000  
19  
 
 
Locate the gas train and disconnect the union, 3 electrical  
plugs, and the gas train mounting screws from the burner.  
Carefully slide the gas train out of the gas train enclosure.  
(The carbon ignitor located at the far end of the gas train is  
very fragile.)  
Unregulated Gas Valve  
Regulate (govern) gas externally (refer to “Supply Pressure”  
being used. Operate dryer through 1 complete cycle to ensure  
proper operation.  
Remove 2 burner tube mounting screws and remove burner  
tube in order to gain access to the orifice.  
Regulated Gas Valve  
Using a 3/8” wrench or socket, remove the existing orifice  
and replace it with an orifice from the kit.  
Refer to “Gas Pressure Adjustment” on the following page to  
adjust the gas valve to the appropriate burner pressure listed  
Important  
Use extreme care when removing and replacing  
orifice (injector). This orifice (injector) is made of  
brass, which is easily damaged.  
!
Important  
Conversions done improperly can result in a fire or  
!
explosion!  
Reinstall the burner tube onto the burner base.  
Conversion from Propane or Butane Gas  
to Natural Gas  
Use a flat screwdriver to remove the regulator vent cap.  
For unregulated L.P. gas (most countries): install  
The following conversion allows the dryer to be operated with  
natural gas.  
blocking pin (P/N 140414).  
For regulated L.P. gas (some countries): remove the  
white plastic regulator adjustment screw (under vent  
cap). Remove spring under screw and replace with  
spring from kit (P/N 140416). Replace regulator  
adjustment screw.  
Parts Required for Conversion:  
Description  
Vent Cap and Spring  
Burner Orifice (Injector)  
P/N  
140415  
*
Qty  
**  
**  
Install the gas train back into the dryer gas train enclosure.  
Be sure the tab at the rear of the gas train engages into the  
mounting slot.  
*
** MDG31 will require 1; MDG51 and MDG77 will require 2.  
Connect the union and the 3 electrical plugs.  
Instructions  
Disconnect electrical power to the dryer.  
Affix L.P. Conversion Label (P/N 114515) to the dryer’s data  
label.  
Close all shutoff valves in dryer’s gas supply line.  
Complete L.P. Kit Conversion Confirmation Label (P/N  
114083) and affix this label as close as possible to the dryer’s  
existing dryer rating (data) label/plate.  
Important  
The MDG51 and MDG77 will require that the  
following procedures be performed on both  
burner assemblies.  
!
Non-CE Dryers  
Affix L.P. Conversion Rating Label Addendum (P/N 114090)  
as close as possible to the dryer’s existing dryer rating (data)  
label/plate.  
Open the panel located just below the loading door.  
Locate the gas train and disconnect the union, 3 electrical  
plugs, and the gas train mounting screws from the burner.  
Carefully slide the gas train out of the gas train enclosure.  
(The carbon ignitor located at the far end of the gas train is  
very fragile.)  
CE Dryers  
Affix new data plate label that came with the conversion kit.  
Open all shutoff valves, reconnect electrical power to the dryer,  
and test for leaks.  
Remove 2 burner tube mounting screws and remove burner  
tube in order to gain access to the orifice.  
Important  
Using a 3/8” wrench or socket, remove the existing orifice  
and replace it with an orifice from the kit.  
Never test for leaks with an open flame!!! Use a  
soapy water solution or product intended for that  
purpose.  
!
Important  
Use extreme care when removing and replacing  
orifice (injector). This orifice (injector) is made of  
brass, which is easily damaged.  
!
Reinstall the burner tube onto the burner base.  
Select from the following 3 options, the conversion to be  
performed:  
Converting from unregulated L.P. to regulated natural  
gas: use a flat screwdriver to remove the cap with  
blocking pin and install the regulator vent cap from the kit  
(P/N 140415).  
20  
Maytag Co.  
113430-10  
 
 
Warning (CE Dryers)  
This appliance must only be operated with the gas  
type indicated on the dryer’s data plate. If the  
Converting from unregulated L.P. to unregulated  
natural gas: no change to the regulator is required.  
!
Converting from regulated L.P. to regulated natural gas:  
remove the white plastic regulator adjustment screw  
(under vent cap). Remove spring under screw and  
replace with spring from kit (P/N 140415). Replace  
regulator adjustment screw.  
appliance is converted (gas type changed), a data plate  
amendment must be obtained from Maytag.  
Conversions done improperly can result in a fire or  
explosion!  
Install the gas train back into the dryer gas train enclosure.  
Be sure the tab at the rear of the gas train engages into the  
mounting slot.  
Gas Pressure Testing _________________  
Connect the union and the 3 electrical plugs.  
For proper operation, the gas pressure must be correct,  
consistent and maintained at the gas pressure rates shown  
gas pressure readings.  
Open all shutoff valves, reconnect electrical power to the dryer,  
and test for leaks.  
Operate the dryer through 1 complete cycle to ensure proper  
operation.  
There are 2 types of devices used to measure gas pressure.  
They are the spring/mechanical type gauge and the  
manometer. The use of the spring/mechanical type gauge is  
not recommended because they are very easily damaged  
and are not always accurate. The preferred type of gauge is  
the manometer because it is a simple device to use and is  
highly accurate. A manometer is simply a glass or transparent  
plastic tube with a scale graduated in inches or mb. When it  
is filled with water and pressure is applied, the water in the  
tube rises, showing the exact gas pressure.  
With dryer operating, check the manifold (burner) pressure  
at the tap on the gas valve to ensure proper operating pressure  
Gas Pressure Adjustment  
Disconnect electrical power to the dryer.  
Important  
The MDG51 and MDG77 will require that the  
following procedures be performed on both  
burner assemblies.  
!
Gas Pressure Test Procedure  
Turn gas cock in gas supply line to “OFF” position.  
50 Hz dryers: Back out miniature screw inside pressure tap  
To adjust gas valve’s internal regulator, remove the regulator  
vent cap with the regulator adjustment tool, which is located  
on the back guard between the gas inlet and exhaust outlet  
(refer to the illustration below for proper use of adjustment  
tool). Be sure to use one of the wide ends of the adjustment  
tool for removal of the vent cap. Once vent cap is removed,  
the narrow end of the adjustment tool can be used to turn the  
plastic adjustment screw in the valve. Turn the screw  
clockwise to raise pressure and counterclockwise to lower  
pressure.  
60 Hz dryers: Install pressure tap and attach manometer (refer  
Turn gas cock to “ON” position.  
Start the dryer in Heat Mode and wait for ignition. Gas manifold  
If the gas pressure needs to be adjusted, refer to “Gas  
Pressure Adjustment” on this page.  
Gas (burner) pressures are measured with the burner in  
operation for all burner adjustment conditions. Therefore  
once the necessary adjustments have been made, the dryer  
must be operated in a heating cycle to verify that the pressure  
is correct. If it is not correct, you must discontinue the power  
to the unit and make further adjustments. Repeat these steps  
as many times as necessary to achieve the correct burner  
pressure. Once the adjustment of the valve is complete, the  
vent cap must be replaced and sealed with, for example,  
paint to prevent maladjustment by the user.  
Once test is complete, turn gas cock to “OFF” position.  
Remove manometer. Tighten screw inside the pressure tap  
or install plug.  
Turn gas cock to “ON” position and check for leaks with soap  
solution with main burner “ON.”  
Water Information _____________________  
Before You Start  
Check Local Codes and Permits  
Call your local water company or the proper municipal  
authority for information regarding local codes.  
Important  
It is your responsibility to have all plumbing  
!
connections made by a qualified professional to  
ensure that the plumbing installation is adequate and  
conforms to local, state, and federal regulations or codes.  
Edge #1 for vent cap  
Edge #2 for adjustment screw  
It is the installer’s or owner’s responsibility to see that the  
required water pressure, pipe size, or connections are  
provided. The manufacturer assumes no responsibility if  
the fire suppression system is not connected, installed, or  
maintained properly.  
113430-10  
Telephone: (641) 787-7000  
21  
 
   
Warning  
Installation  
Electrical power must be provided to the dryer at  
all times. If the main electrical power supply to the  
dryer is disconnected, the fire suppression system is  
inoperative!!  
Water Supply  
!
The fire suppression system must be supplied with a  
minimum water pipe size of 1/2-inch (12.7 mm) and be  
provided with 40 psi +/- 20 psi (2.75 bar +/- 1.37 bar) of  
pressure.  
Preparation for Operation/Start-Up ___  
The following items should be checked before attempting to  
operate the dryer:  
If the rear area of the dryer or the water supply is located in an  
area where it will be exposed to cold/freezing temperatures,  
provisions must be made to protect these water lines from  
freezing.  
• Read all “CAUTION,” “WARNING,” and “DIRECTION”  
labels attached to the dryer.  
Warning  
• Check incoming supply voltage to be sure that it is the  
same as indicated on the data label. In the case of  
208 VAC or 240 VAC, the supply voltage must match  
the electric service exactly.  
If the water in the supply line or water solenoid  
valve freezes, the fire suppression system will be  
inoperative!!  
!
• GAS MODELS – Check to ensure that the dryer is  
connected to the type of heat/gas indicated on the dryer  
data label.  
Water Connections  
The water connection is made to the 3/4”-11.5 NH hose  
adaptor, which is shipped in the tumbler and must be installed  
to the 1/2” N.P.T. water connection, located at the upper rear  
of the dryer. A flexible supply line/coupling must be used in  
an effort to avoid damaging the electric water solenoid valve.  
• GAS MODELS – Be sure that all gas shutoff valves are  
in the open position.  
• Be sure all back panels (guards) and electric box  
covers are in place.  
Note  
• Be sure the service doors are closed and securely in  
place.  
The 3/4”-11.5 NH is a standard hose coupling  
!
• Be sure the lint door/drawer is securely in place.  
screw thread. It is not to be confused with 3/4”  
N.P.T. The sealing of an NH connection is made with a  
washer opposed to the mating threads of an N.P.T.  
assembly. The 2 thread designs are not compatible.  
• Rotate the tumbler (drum) by hand to be sure it moves  
freely.  
• Check bolts, nuts, screws, terminals, and fittings for  
tightness and security.  
It is recommended that a filter or strainer be installed in the  
water supply line.  
• Check that the vent is connected to the dryer and is  
exhausted to the outdoors.  
Important  
Flexible supply line/coupling must be used.  
Solenoid valve failure due to hard plumbing  
connections will void warranty.  
Preoperational Test ___________________  
!
All dryers are thoroughly tested and inspected before leaving  
the factory. However, a preoperational test should be  
performed before the dryer is publicly used. It is possible  
that adjustments have changed in transit or due to marginal  
location (installation) conditions.  
The dryer is to be connected to the water mains using a  
new hose set and the old hose set should not be reused.  
Optional Manual Bypass  
Turn on electric power to the dryer.  
Provisions are made in the dryer’s fire suppression system  
for the installation of an optional manual bypass. The  
connections for the manual bypass are made at the “tee” or  
“three way” fitting located in the outlet supply side of the water  
solenoid valve. The manual ball cock shutoff valve must be  
located outside of the dryer at a distance from the dryer where  
it is easily accessible. The use and connection of this manual  
bypass is at the option or discretion of the owner.  
Refer to the Operating Instructions for starting your particular  
model dryer.  
Gas Dryers  
Open all shutoff valves.  
When a gas dryer is first started (during initial start-up), it has  
a tendency not to ignite on the first ignition attempt. This is  
because the gas supply piping is filled with air, so it may take  
a few minutes for the air to be purged from the lines.  
The water connection for the manual bypass is made to the  
“tee” or “three way” fitting, which has a 3/8” F.N.P.T. and a  
coupling must be used to provide the minimum 1/2-inch (12.7  
mm) supply (feed) line.  
Note  
During the purging period, check to be sure that  
all gas shutoff valves are open.  
!
Electrical Requirements  
No independent external power source or supply connection  
is necessary. The 24-volt power to operate the fire  
suppression system is accomplished internally in the dryer  
(from the dryer controls).  
A gas pressure test should be taken at the gas valve pressure  
tap of each dryer to ensure that the water column pressure is  
correct and consistent.  
22  
Maytag Co.  
113430-10  
 
   
Note  
Non-Coin Models  
Microprocessor Controller (Computer)  
Water column pressure requirements (measured  
at the pressure tap of the gas valve body) must be  
!
The L.E.D. display reads “READY” (no cycle in progress).  
verified.  
Press the letter on the keypad corresponding to the cycle  
desired (e.g. key “D”).  
Important  
In most cases there is no regulator provided in an  
L.P. dryer. The water column pressure must be  
regulated at the source (L.P. tank), or an external regulator  
must be added to each dryer.  
The dryer will then start (i.e. blower, tumbler, and heat).  
!
The L.E.D. display will read MANUAL DRYING CYCLE D,  
___MIN REMAIN.  
Note  
Safety Related Circuits  
The dryer can be stopped at any time by pressing  
!
Make a complete operational check of all safety related  
circuits:  
the “STOP/CLEAR” key, at this time the dryer will  
go into a cycle pause. If the “STOP/CLEAR” key is pressed  
again at this point, the cycle that was in progress will be  
cancelled and returned to the “READY” state.  
• Door Switch(es)  
• Hi-Limit Thermostats  
• Sail Switch  
When the programmed drying time has expired, the non-coin  
microprocessor controller (computer) will proceed into the  
Cool Down Cycle.  
Make a complete operational check of all operating controls.  
Tumbler Coating  
Once the Cool Down Cycle begins at the end of the heat  
cycle, the L.E.D. display will read COOL DOWN TEMP __/__  
MINUTES remaining. At the end of the heat cycle, the dryer  
will shut off the heat and continue the fan and tumbler until  
the Cool Down Time or temperature is reached.  
The tumbler is treated with a protective coating. We suggest  
dampening old garments or cloth material with a solution of  
water and nonflammable mild detergent and tumbling them  
in the tumbler to remove this coating.  
Microprocessor Programs/Selections  
Shutdown Instructions ________________  
If the dryer is to be shutdown (taken out of service) for a  
period of time, the following must be performed:  
Each microprocessor controller (computer) has been  
preprogrammed by the factory with the most commonly used  
parameter (program) selections. If computer program  
changes are required, refer to the computer programming  
manual, which was shipped with the dryer.  
Discontinue power to the dryer either at the external disconnect  
switch or the circuit breaker.  
Discontinue the heat supply:  
Preoperational Instructions __________  
Gas Models – Discontinue the gas supply.  
Shut off external gas supply shutoff valve.  
Important  
Shut off internal gas supply shutoff valve located in the gas  
valve burner area.  
For more detailed information regarding the  
microprocessor controller (computer), refer to the  
microprocessor user’s manual included with the dryer.  
!
Service/Parts Information ____________  
Service  
Service must be performed by a qualified trained technician,  
service agency, or gas supplier. If service is required, contact  
the Maytag distributor from whom the equipment was  
purchased. If the distributor cannot be contacted or is  
unknown, contact the Maytag Co. for a distributor in your area.  
Coin Models  
Microprocessor Controller (Computer)  
When the microprocessor controller (computer) is in the ready  
state, the L.C.D. screen will display “Ready, Insert $XX.XX  
(amount) to Start”.  
Insert coin(s). Once the correct “Amount to Start” has been  
inserted, the L.C.D. will display “Select Temperature”.  
Note  
Select temperature by pressing “HI,” “MED,” or “LO.” The  
cycle will start and the L.C.D. will display the Dry Cycle selected  
and the remaining time.  
When contacting the Maytag Co., be sure to give  
them the correct model number and serial number  
so that your inquiry is handled in an expeditious manner.  
!
The dryer will continue through the drying and cooling cycles,  
until the vended time has expired.  
Parts  
Note  
Replacement parts should be purchased from the distributor  
from whom the Maytag equipment was purchased. If the  
distributor cannot be contacted or is unknown, contact the  
Maytag Co. for a distributor in your area.  
To stop the dryer, open main door. Continuation of  
!
the cycle will resume only after the door has been  
closed and any one of the 3 temperature selections is  
pressed.  
113430-10  
Telephone: (641) 787-7000  
23  
 
         
Note  
Note  
When ordering replacement parts from the Maytag  
distributor or the Maytag Co. be sure to give them  
the correct model number and serial number so that your  
parts order can be processed in an expeditious manner.  
Suggested time intervals shown are for average  
usage which is considered 6 to 8 operational  
(running) hours per day.  
!
!
Important  
Dryer produces combustible lint and must be  
exhausted to the outdoors. Every 6 months,  
inspect the exhaust ducting and remove any lint buildup.  
!
Warranty Information _________________  
Returning Warranty Cards  
Before any dryer leaves the manufacturer’s test area, a  
warranty card is placed on the back side of the main door  
glass. These warranty cards are intended to serve the  
customer where we record the individual installation date  
and warranty information to better serve you should you file a  
warranty claim.  
Suggested Cleaning Schedule  
Every Third or Fourth Load  
Clean the lint screen every third or fourth load. A clogged lint  
screen will cause poor dryer performance. The lint door/  
drawer is located just below the loading door of the dryer.  
Open the lint door/drawer, brush the lint off the lint screen,  
and remove the lint. Inspect lint screen and replace if torn.  
Important  
A separate warranty card must be completed and  
returned for each individual dryer.  
!
Note  
To remove the lint drawer from the dryer, pull  
drawer out approximately halfway. Press the lint  
door/drawer stop downward and pull the drawer out.  
!
Note  
Be sure to include the installation date when  
!
returning the warranty card(s).  
Important  
The frequency of cleaning the lint screen can best  
Warranty  
!
be determined from experience at each location.  
For a copy of the manufacturer’s commercial warranty  
covering your particular dryer(s), contact the Maytag distributor  
from whom you purchased the equipment and request a dryer  
warranty form. If the distributor cannot be contacted or is  
unknown, warranty information can be obtained from the  
Maytag Co.  
Weekly  
Clean lint accumulation from lint chamber, thermostat, and  
microprocessor temperature sensor area.  
Warning  
To avoid the hazard of electrical shock,  
Note  
!
Whenever contacting the Maytag Co. for warranty  
!
discontinue electrical supply to the dryer.  
information, be sure to have the dryer’s model  
number and serial number available so that your inquiry  
can be handled in an expeditious manner.  
90 Days  
Remove lint from gas valve burner area with a dusting brush  
or vacuum cleaner attachment.  
Routine Maintenance _________________  
Cleaning  
Clean any lint accumulation in and around the motor(s) casing  
opening.  
A program and/or schedule should be established for  
periodic inspection, cleaning, and removal of lint from various  
areas of the dryer, as well as throughout the ductwork system.  
The frequency of cleaning can best be determined from  
experience at each location. Maximum operating efficiency  
is dependent upon proper airflow. The accumulation of lint  
can restrict this airflow. If the guidelines in this section are  
met, the dryer will provide many years of efficient, trouble  
free, and most importantly, safe operation.  
Note  
To prevent damage, avoid cleaning and/or  
touching ignitor/flame-probe assembly.  
!
Every 6 Months  
Inspect and remove lint accumulation in customer furnished  
exhaust ductwork system and from dryer’s internal exhaust  
ducting.  
Warning  
Note  
Lint from most fabrics is highly combustible. The  
!
The accumulation of lint in the exhaust ductwork  
can create a potential fire hazard.  
!
accumulation of lint can create a potential fire  
hazard. Keep dryer area clear and free from combustible  
materials, gasoline, and other flammable vapors and  
liquids.  
24  
Maytag Co.  
113430-10  
 
         
Note  
7 Days After Installation  
and Every 12 Months Thereafter  
Do not obstruct the flow of combustion and  
ventilation air. Check back draft dampers in the  
exhaust ductwork. Inspect and remove any lint  
accumulation, which can cause the damper to bind or stick.  
!
A competent professional should inspect bolts, nuts, screws,  
setscrews, grounding connections and nonpermanent gas  
connections (unions, shutoff valves, and orifices). Belts  
should be examined. Cracked or seriously frayed belts  
should be replaced. Complete an operational check of  
controls and valves. Complete an operational check of all  
safety devices (lint door/drawer switch, door switches, sail  
switch, and hi-limit thermostats).  
A back draft damper that is sticking partially closed can  
result in slow drying and shutdown of heat circuit safety  
switches or thermostats.  
When cleaning the dryer cabinet(s), avoid using harsh  
abrasives. A product intended for the cleaning of  
appliances is recommended.  
Data Label Information _____________________________________________________________  
CE Label  
Standard Label  
When contacting Maytag, the information on the data label is required to ensure proper service/parts assistance. The data label  
is located at the upper left rear of the dryer behind the back guard.  
1. Model Number – This describes the style of dryer and type of heat (gas, electric, or steam).  
2. Serial Number – Allows the manufacturer to gather information on your particular dryer.  
3. Type of Heat – This describes the type of heat for your particular dryer, gas (either natural gas or L.P. gas), electric, or steam.  
4. Heat Input (For Gas Dryers) – This describes the heat input in British thermal units per hour (Btu/hr) or kilowatts (kW).  
5. Orifice Size (For Gas Dryers) – Gives the number drill size used.  
6. Electric Service – This describes the voltage and current rating for a particular model.  
7. Gas Manifold Pressure (For Gas Dryers) – This describes the manifold pressure taken at the gas valve tap.  
113430-10  
Telephone: (641) 787-7000  
25  
 
 
Part No. 113430  
10 - 12/18/08 - 25  
 

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