American Dryer Corp. AD-385 User Manual
WARNING: For your safety the
information in this manual must be
followed to minimize the risk of fire or
explosion or to prevent property damage,
personal injury or death.
AVERTISSEMENT : Assurez-vous de bien
suivre les instructions données dans cette
notice poiff réduire au minimiim le risque
d’incendie ou d’explosion ou pour éviter tout
dommage matériel, toute blessure ou la mort.
-Do not store or use gasoline or other flammable
vapor and liquids in the vicinity of this or any
other appliance.
■WHAT DO YOU DO IF YOU SMELL GAS
* Do not try to light any appliance.
* Do not touch any electrical switch; 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 supplier, call the
fire department.
- Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
■Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inflammables dans
le voisinage de cet appareil ou de tout autre
appareil.
■ QUE FAIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
* Ne pas tenter d’allumer d’appareil.
* Ne touchez à aucun interrupteur. Ne pas
vous servir des téléphones se trouvant dans
le bâtiment où vous vous trouvez..
* Évacuez la pièce, le bâtiment ou la zone.
* Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions
du fournisseur.
* Si vous ne pouvez rej oindre le fournisseur
de gaz, appelez le service des incendies.
- L’installation et l’entretien doivent être assurés
par un installateur ou un service d’entretien
qualifié ou par le fournisseur de gaz.
111298SL/abe
American Dryer Corp.
For replacement parts, contact the distributor from which the dryer
was purchased or
^ American Dryer Corporation
JOC
Telephone: (508)678-9000 / Fax: (508)678-9447
E-mail: techsupport@amdry.com
88 Currant Road
FaU River MA 02720-4781
ADC Part No. 112188
Retain This Manual In A Safe Place For Future Reference
American Dryer Corporation products embody 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/operator's manual
included with the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
FOR YOUR SAFETY
Do not store or use gasoline or
other flammable vapors or liquids
in the vicinity of this or any other
appliance.
We have tried to make this manual as complete as possible and hope you will find it useful. ADC 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.
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables dans le voisinage de cet
appareil ou de yout autre appareil.
POUR VOTRE SÉCURITÉ
Important
For your convenience, log the following information:
DATE OF PURCHASE
DISTRIBUTORS NAME
Serial Number(s)
______
MODEL NO.
AD-385
Replacement parts can be obtained from your distributor or the ADC factory. When ordering replacement parts from the
factory, you can FAX your order to ADC at (508) 678-9447 or telephone your orders directly to the ADC Parts Department at
(508) 678-9000. Please specify the dryer model number and serial number in addition to the description and part number, so
that your order is processed accurately and promptly.
The illustrations on the following pages may not depict your particular dryer exactly. The illustrations are a composite of the
various dryer models. Be sure to check the descriptions of the parts thoroughly before ordering.
“IMPORTANTNOTE TO PURCHASER”
Inforaiation must be obtained from your local gas supplier on the instructions
to be followed if the user smells gas. These instructions must be posted in a
prominent location near the dryer.
IMPORTANT
YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS
SUPPLY or THE STEAM SUPPLY BEFORE ANY COVERS or GUARDS ARE
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUST
ING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational
Safety and Health Administration) STANDARDS.
«Attention: Lor des opérations d’entretien
“Caution: Label all wires prior to
diseonnection when servicing controls. Wiring
errors can cause improper operation.”
des commandes étiqueter tous fils avant
de les déeonneeter. Toute erreur de
câblage peut être une source de danger et
dépanné.»
CAUTION
DRYER(S) SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON ORNEARTHE DRYER(S).
CHILDREN SHOULD M SUPERVISED IF NEAR DRYER(S) IN OPERATION.
FOR YOUR SAFETY
DO NOT DRYMOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
]
WARNING
UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices
ever be disabled.
WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panels removed. PERSONAL INJURY or FIRE COULD RESULT.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN
PLACE...EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.
IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or
specified in the installation/operator's manual included with the dryer.
Dryer(s) 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 bc№
area.
J
SECTION I
Table of Contents
IMPORTANT INFORMATION
A. RECEIVING and HANDLING................................................................................................................... 3
B. SAFETY PRECAUTIONS...........................................................................................................................4
..................................................................................
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION........................................... 6
A. SPECIFICATIONS.....................................................................................................................................6
SECTION III
INSTALLATION PROCEDURES............................................................................ 8
A. LOCATION REQUIREMENTS...................................................................................................................8
B. UNPACKING/SETTING UP........................................................................................................................9
C DRYER ENCLOSURE REQUIREMENTS.................................................................................................10
D. FRESH AIR SUPPLY................................................................................................................................ 11
E. EXHAUST REQUIREMENTS...................................................................................................................13
F. ELECTRICAL INFORMATION............................................................................................................... 18
G. GAS INFORMATION............................................................................................................................... 23
H. PREPARATION FOR OPERATION/START-UP....................................................................................26
I. PREOPERATIONAL TESTS......................................................................................................................27
J. PREOPERATIONAL INSTRUCTIONS..................................................................................................... 29
K. SHUT DOWN INSTRUCTIONS...............................................................................................................31
3
SECTION IV
SERVICE/PARTS INFORMATION
A. SERVICE................................................................................................................................................... 32
B. PARTS........................................................................................................................................................32
........................................................................
32
SECTION V
WARRANTY INFORMATION................................................................................33
A. RETURNING WARRANTY CARD(S)...................................................................................................33
B. PARTS....................................................................................................................................................... 33
C RETURNING WARRANTY PARTS......................................................................................................... 33
SECTION VI
ROUTINE MAINTENANCE....................................................................................35
A. CLEANING...............................................................................................................................................35
B. ADJUSTMENTS........................................................................................................................................36
C. LUBRICATION......................................................................................................................................... 36
SECTION VII
TROUBLESHOOTING............................................................................................. 37
Microprocessor (Coin) Models........................................................................................................................ 38
Mechanical (Coin) Meter Models...............................................................................................................42
(OPL) Microprocessor (Computer) Models.....................................................................................................47
Dual Timer (OPL) Models..........................................................................................................................55
SECTION VIII
TECHNICAL INFORMATION............................................................................... 60
SECTION IX
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS
................................
62
SECTION I
IMPORTANT INFORMATION
A. RECEIVING and HANDLING
The dryer is shipped in a protective stretch wrap cover with protective cardboard comers and top
cover (or optional box) as a means of preventing damage in transit. Upon delivery, the dryer
and/or packaging, and wooden skid should be visually inspected for shipping damage. If any
damage whatsoever is noticed, inspect further before delivering carrier leaves.
Dryers damaged in shipment.
1. ALL dryers should be inspected upon receipt and before they are signed for.
2. If there is suspected damage or actual damage, the trucker's receipt should be so noted.
3. If the dryer is damaged beyond repair, it should be refused. Those dryers which were not
damaged in a damaged shipment should be accepted, but the number received and the
number refused must be noted on the receipt.
4. If you determine that the dryer was damaged after the trucker has left your location, you
should call the delivering carrier's freight terminal immediately and file a claim. The freight
company considers this concealed damage. This type of freight claim is very difficult to get
paid and becomes extremely difficult when more than a day or two passes after the freight was
delivered. It is your responsibility to file freight claims. Dryer/parts damaged in transit
cannot be claimed under warranty
5. Freight claims are the responsibility of the consignee, and ALL claims must he filed at the
receiving end. ADC assumes no responsibility for freight claims or damages.
6. If you need assistance in handling the situation, please contact the ADC Traffic Manager at
(508) 678-9000.
IMPORTANT; The dryer must he transported and handled in an upright position at all
times.
B. SAFETY PRECAUTIONS
WARNING: For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion or to prevent property damage,
personal injury, or loss of life.
WARNING: The dryer must never be operated with any of the back guards, outer
tops, or service panels removed. PERSONAL INJURY or FIRE COULD
____________
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
2. Purchaser/user should consult the local gas supplier for proper instructions to be followed in
the event the user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
RESULT.
________________________________________________________
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 he preformed by a qualified installer, service agency, or gas
supplier.
5. Dryer(s) must be exhausted to the outdoors.
6. Although ADC produces a very versatile machine, there are some articles that, due to fabric
composition or cleaning method, should not be dried in it.
WARNING; Dry only water-washed fabrics. DO NOT dry articles spotted or washed
in dry cleaning solvents, a combustible detergent, or "all purpose" cleaner.
EXPLOSION COULD RESULT.
WARNING; DO NOT dry rags or articles coated or contaminated with gasoline,
______________kerosene, oil, paint, wax. EXPLOSION COULD RESULT.
WARNING; DO NOT dry mop heads. Contamination by wax or flammable solvents
will create a fire hazard.
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge
rubber, or similarly textured rubber materials. Drying in a heated basket
______________
7. A program should be established for the inspection and cleaning of lint in the heating unit area,
exhaust duct work, and inside the dryer. The frequency of inspection and cleaning can best be
determined from experience at each location.
WARNING: The collection of lint in the burner area and exhaust duct work can create a
8. For personal safety, the dryer must he electrically grounded in accordance with local codes
and/or the National Electric Code ANSI/NFPA NO. 70-LATEST EDITION.
NOTE: Faüure to do so will VOID THE WARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switches, heat safety circuit, ever be
disabled.
WARNING: PERSONAL INJURY or FIRE COULD RESULT.
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
(tumbler) may damage plastics or rubber and also may be a fire hazard.
potential fire hazard.
11. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articles left in the dryer after the drying and cooling cycles have been completed
can create a fire hazard.
12. READ and FOLLOW ALL CAUTION and DIRECTION LABELS ATTACHED TO THE
DRYER.
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 (Occupational Safety and Health
Administration) STANDARDS.
SPECIFICATIONS/COMPONENT IDENTIFICATION
A. SPECIFICATIONS
SECTION II
MAXIMUM CAPACITY (dry weight)
BASKET (tumbler) DIAMETER
BASKET (tumbler) DEPTH
BASKET (tumbler) MOTOR
DOOR OPENING (Diameter)
BASKET (tumbler) VOLUME
DRYERS PER 20V40' CONTAINER
DRYERS PER 45748' TRUCK
VOLTAGE AVAILABLE
APPROX WEIGHT (uncrated)
tn
APPROX WEIGHT (crated)
o
HEAT INPUT
AIRFLOW
INLET PIPE CONNECTION
Shaded areas are in metric equivalents
30 lbs. 13.6 kg
27-1/4"
69.22 cm
30" 76.2 cm
1 HP .746 kw
21-1/2"
10.12 cu. ft.
54.61 cm
.286 cum.
14/30
36/38
120-230V / 10/ 50/60 Hz
450 lbs.
204 kg
500 lbs. 227 kg
110,000 btuh
27,721 kcal/hr
750 cfin 21.22 cmm
3/4" 1.91 cm
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
Specifications
ADG-385
FRONT VIEW
lSPEC<5f|
SECTION III
INSTALLATION PROCEDURES
Installation should be performed by competent technicians in accordance with local and state
codes. In the absence of these codes, the installation must conform to applicable American
National Standards: National Fuel Gas Code ANSI.Z223.1-LATEST EDITION and/or National
Electric Code ANSI/NFPA NO. 70-LATEST EDITION.
A. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the
absence-of such codes or ordinances the location must conform with the National Fuel Gas Code
ANSI.Z223.1-LATEST EDITION.
1. The dryer must be installed on a sound level floor capable of supporting its weight. It is
recommended that carpeting be removed from the floor area that the dryer is to rest on.
2. The dryer must not he installed or stored in an area where it will be exposed to water and/or
weather.
3. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh
Air Supply in Section Dl.
4. Clearance provisions must be made from combustible construction as noted in this manual
(refer to Dryer Enclosure Requirements in Section O.
5. Provisions must be made for adequate clearances for servicing and for operation as noted in
this manual (refer to Dryer Enclosure Requirements in Sectiom O.
6. Dryer must be exhausted to the outdoors (refer to Exhaust Requirements in Section EL
7. Dryer must be located in an area where correct exhaust venting can be achieved as noted in
the manual (refer to Exhaust Requirements in Section EL
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will
________________
be necessary.
___________________________________
B. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from dryer.
LOCKS/KEYS
Coin Models: The access keys to the control (service) door, and lint door are included inside the
information package shipped in the dryer tumbler (basket) and should be
removed and put in a safe place. The keys should be made accessible because they
will be needed throughout various phases in the installation of the unit.
OPL Models: For models equipped with locks, the lock used is a dummy lock and no key is
supplied or needed. The lock can be turned with any key, a screwdriver, a small
coin, or any small sharp object.
The dryer can be moved to its final location while still attached to the skid or with the skid
removed. To un-skid 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, and for better automatic closure of the main door
the dryer should be tilted slightly to the rear.
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a
minimum of twelve (12) inches (18-inches or more is recommended for ease of installation,
maintenance, and service) above the dryer outer top, except along the front of the dryer which may
be partially closed in if desired.
X= 12", 24" is recommended for ease of maintenance.
NOTE: Allowances must be made for opening the control door.
Dryers may be positioned side wall to side wall. However, a 1/16" minimum allowance must be
made for opening and closing of the control door and the lint door. It is suggested that the dryer be
positioned about two (2) feet away from the nearest obstruction for ease of installation,
maintenance, and service (to be measured from the back guard). Refer to the illustration above for
details.
NOTE: Air considerations are important for proper and efficient operation.
10
D. FRESH AIR SUPPLY
When the dryer is operating, it draws in room air, heats it, passes this air through the basket
(tumbler), and exhausts it out of the building. Therefore, the room air must be continually
replenished front the outdoors. If the make-up air is inadequate, drying time and drying efficiency
will be adversely affected. Ignition problems and sail switch "fluttering" problems may result, as
well as premature motor failure from overheating.
Air supply (make-up air) must be given careful consideration to assure proper performance of each
dryer. An unrestricted source of air is necessary for each dryer. As a general rule, an unrestricted air
entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet is required for each
dryer. To compensate for the use of registers or louvers used over the openings, this make-up air
must be increased by approximately thirty-three percent (33%). It is not necessary to have a sepa
rate make-up air opening for each dryer. Common make-up air openings are acceptable. However,
they must be set up in such a manner that the make-up air is distributed equally to ALL the dryers.
EXAMPLE: For a bank of four (8) dryers, two (2) unrestricted openings measuring 2 feet by
3 feet (6 square feet each) is acceptable.
1
2‘
)
MAKE UP AIR OPENINGS
2'
1
— 3'^
TYPICAL INSTALLATION SHOWING MAKE - UP AIR OPENINGS
11
NOTE: 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
excessive altitudes or predominantly low pressure areas.
IMPORTANT: Make-up air must be provided from a source free of dry cleaning
solvents fumes. Make-up air that is contaminated by dry cleaning
solvent fumes will result in irreparable damage the motors and other
dryer components.
NOTE; Component failure due to dry cleaning solvent fumes will VOID THE
WARRANTY.
12
E. EXHAUST REQUIREMENTS
Exhaust duct work should be designed and installed by a qualified professional. Improperly
sized duct work will create excessive back pressure which results in slow drying, increased use
of energy, overheating of the dryer, and shutdown of the burner by the airflow (sail) switches,
burner hi-limits, or basket (tumbler) hi-heat thermostats.
CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCT WORK CAN
CREATE A POTENTIAL FIRE HAZARD.
The duct work should be laid out in such a way that the duct work travels as directly as
possible to the outdoors with as few turns as possible. Single or independent dryer venting is
recommended.
The dryer is manufactured with an 8" exhuast duct outlet. When single drying venting is used
an 8" exhaust duct can be used providing that the duct work from the dryer to the outside
exhaust outlet does not exceed ten (10) feet and there is no more than one (1) elbow (which is
the outside exhaust outlet protection). See illustraion A on page 14 for details. For exhaust
ducting which exceeds ten (10) feet, the minimum diameter of this duct must be at least 10
inches (even though the dryer exhaust duct outlet is only 8"). See illustrations B and C on page
15 for examples. In the case of multiple (common) dryer venting, the distance from the last
dryer to the outside exhaust duct outlet should not exceed twenety (20) feet. The shape of the
duct work is not critical so long as the minimum cross-sectional area is provided. It is sug
gested that the use of 90 degree turns be avoided; use 30 degree and/or 45 degree angles in
stead. The radius of the elbows should prefereably be 1-1/2 times the diameter of the duct.
Including basket (tumbler)/dryer elbow connections or elbows used for outside protection
from the weather, no more than two (2) elbows should be used in the exhaust run. If more than
two (2) elbows are used, the cross sectional area of the duct work must be increased.
ALL duct work should be smooth inside with no projections from sheet metal screws or other
obstructions which will collect lint. When adding ducts, the duct to be added should overlap
the duct to which it is to be connected. ALL duct work joints must be taped to prevent
moisture and lint from escaping into the building. Inspection door should be installed at
strategic points in the exhaust duct work for periodic inspection and clean-out of lint from the
duct work.
IMPORTANT; Exhaust back pressure measured by a manometer in the exhaust duct
should not exceed 0.3 inches of water column.
IMPORTANT: For exhaust runs over 10 feet, minimum duct work diameter is 10-inches.
NOTE: Where the exhaust duct work passes through a wail, ceiling, or roof made of
combustible materials, the opening must be 2-inches larger (all the way around)
than the duct. The duct must be centered within this opening.
13
To protect the outside end of horizontal duct work from the weather, a 90° elbow bent downweird
should be installed where the exhaust exits the building. If the duct work travels vertically up
through the roof, it should be protected from the weather by using a 180° turn to point the opening
downward. In either case, allow at least twice the diameter of the duct between the duct opening
and the nearest obstruction.
IMPORTANT: DO NOT use screens or caps on the outside of opening of exhaust duct
work.
IMPORTANT: Exhaust back pressure measured by a manometer at each basket
(tumbler) exhaust duct area should not exceed 0.3 inches of water column.
SINGLE DRYER VENTING
IMPORTANT: For exhaust duct runs of over 10 feet a minimum duct size of 10-inches
must be used.
When single 8-inch venting is used, the duct work from the dryer to the outside outlet cannot
exceed 10 feet (refer to Ulus. A below). This calculation of 10 feet compensates or allows for the use
of a maximum of only one (1) elbow (which is the outside outlet protection).
Ilus. A.
HORIZONTAL SINGLE DRYER
VENTING 8 INCH DUCTING
10 FEET MAXIMUM-
MAN1571
MOTE A: OPEMII^ ttlST BE ЛУ0 <21 INCHES LARGER THAN THE OUCT lALL THE WAY AROUND)
THE ШСТ MUST BE CENTERED WITHIN THIS OPENING.
14
2x0
When single 10-inch vertical venting is used( refer to Ulus. B. below), the duct work from the
dryer to the outside outlet cannot exceed 20 feet. This calculation of 20 feet compensates or allows
for the use of a maximum of only two (2) elbows creating the 180® (turned downward) outside
outlet.
VERTICAL SINGLE DRYER VENTING
lUus. B.
Ulus. C.
Uo-X
Л • и
J
яттнАот
see vewv mw
isecTVH mn
-голтоист
ноте Лг OPSHNQ MUST К TWO 01 HCt€5 LAWCB9 ГНАМ OUCT <AU Tf€ W*f ЛтЛЯ»
OUCT wtat ae СЕНтЕяео гнв опша
For a 10-inch horizontal run where a maximum of one (1) elbow is used (refer to Ulus. C
below); the duct work from the dryer outlet should not exceed 50 feet. A 10-inch horizontal
duct where (3) elbows (including outside outlet protection) are used cannot exceed 30 feet in
length.
HORIZONTAL SINGLE DRYER
VENTING 10 INCH DUCTING
sofeer HAxHjH^
ноте A.- OPSHNO MUST ae TWO Ф ic>cs lmgep than rw duct mu way ллемо
»c OUCT MUST ee сентеко witmn ths okunq.
If the length of the duct run or quantity of elbows used exceeds the above noted specifications, the
cross area of the duct work must be increased in proportion to the number of elbows or duct run
added.
IMPORTANT: For extended duct work runs, the cross section area of the duct work can
only be increased to an extent. When the duct work approaches the
maximum limits noted in this manual, a professional heating venting
air conditioning (HVAC) firm should be consulted for proper venting
information.
15
MULTIPLE DRYER (Common) VENTING
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 45° in the direction of air flow and
should be spaced at least 28-1/2 inches apart. The main duct should be tapered, with the
diameter increasing before each individual duct (10-inch minimum) is added.
The main duct may be any shape so long as the minimum cross section is provided. The main
duct should be tapered with the diameter increasing before each individual 10-inch duct is added
(refer to Ulus. D below).
Illus. D.
WITH AH -A- OlAHETER EXHAUST COHHECTIOHS AT COMHOH DUCT
"Rffomfuss
JSSjumBBum
• SHOULD HOT •
EXCEED X"
MULTPLE DRYER VENTH6
HO. OF DRYERS
--------------------
_____________
S
8 0
C E a
HOTE A-
-1
HQRIZOUTM.
2*0 CLEARAHCE
-----------
wall
HPORTMT: no none TMN I ORTERS CAH K CIHeCTeO ro OW COMEW oucr I Y0ir I WITH A HOnaonrAi M
^ AW NO NDRE THAN 6 OTrim CAN B£ COteCTEO WITH A fiRTKAi RIM
NOTE /»; OPEHNO Husr BE TWO ffl NO€S LARGER THAN OUCT lALL THE WAY AROUNDL TW DUCT
----------
HUST BE CENTERED WITHM THS OPEHNG.
NOTE B: AD-3B5 2B VJ- WVE XSO CFH
M. aiowns
B=400
C=22 G=20
D=324
E=20 1=18
M* iMMOJ
TOHXyOJAL tumblers
J
nmSR EXHAUST MUST ENTER MAH
EXHAUST DUCT AT A US* AMGLE
F=324 J=256
H=256
7
A s
F
H
J
1 K M
3
L
K=18
L=210 P=80
M=16 Q=10
2
H
0 0
i
R
MOTE A -
L-y
H V.«v*
HSPECWH
ODORS
MR iSiSJ asTAHces
aermn oucrs
NAN2»»
N=164
0=14
J£RT£^
U.
* DU
t
The maximum length of venting from the last dryer to where it exhausts...
Vertical venting run must not exceed 20 feet. This calculation compensates for the use of a
maximum of three (3) elbows including the two (2) elbows creating 180° (turned downward) outside
outlet.
IMPORTANT: No more than six (6) dryers maximum should be converted to one (1) main
common duct with a venical run.
Horizontal venting must not exceed 20 feet. This calculation compensates for the use of a
maximum of only one (1) elbow which is the outside outlet protection.
IMPORTANT: No more than eight (8) dryers maximum should be converted to one (1) main
common duct with a horizontal run.
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NOTE; Distance between dryer single ducts being connected to the main common duct must be
a minimum of 28-1/2" (dryer width).
Duct work should be laid out in such in a manner where allowances are made at rear area
of dryer for removal of rear service panels/guards.
Illustration D (refer to page 16) shows 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: For extended duct work runs, the cross section area of the duct work can
only be increased to an extent. When the duct work approaches the maxi
mum limits as noted in this manual, a professional HVAC firm should be
consulted for proper venting HVAC from should be consulted for proper
venting information.
IMPORTANT VENTING REMINDERS
1. Duct work size and installation should be done by a qualified professional.
2. The dryer must be exhausted to the outdoors.
3. Duct work should be routed as short as possible to the outdoors with as few elbows as possible.
4. Avoid 90° turns ... use 30° or 45° turns instead.
5. The size of the duct work must be a minimum of 10-inches if the exhaust length exceeds 10 feet.
6. The inside of the duct work should be as smooth as possible ... with no projections from sheet
metal screws.
Ducts added should overlap the duct to which it is to be connected.
7. ALL ducts should be taped to prevent moisture and lint from escaping into the building.
8. Inspection/clean out doors should be installed throughout strategic points in the duct work for
periodic inspection and cleaning.
9. Wherever the duct passes throughout combustible materials, the opening must be 2-inches larger
(all the way around) than the duct. The duct must be centered within this opening.
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