American Dryer Corp AD-115ES II User Manual
AD-115ES II
Installation Manual
W ARNING: 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.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHA T TO 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.
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.
— Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.
— QUE F AIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
• 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 zone.
• 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.
— L ’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualifié
ou par le fournisseur de gaz.
For replacement parts, contact the reseller from which the dryer
was purchased or
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781
T elephone: (508) 678-9000 / Fax: (508) 678-9447
E-mail: techsupport@amdry.com
062800JEV/tcosta ADC Part No. 113155
www.amdry.com
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 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 and
liquids in the vicinity of this or
any other appliance.
W e 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. The illustrations included in this manual may not depict your particular dryer exactly.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
Important
For your convenience, log the following information:
DA TE OF PURCHASE________________________________ MODEL NO. __________________________________________
RESELLER’S NAME ________________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
AD-115ES II
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the factory ,
you can F AX your order to ADC at (508) 678-9447 or telephone your order 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.
“IMPORT ANT NOTE TO PURCHASER”
Information 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 SUPPL Y AND THE GAS
SUPPLY OR THE STEAM SUPPLY BEFORE ANY COVERS OR GUARDS ARE
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING,
ADJUSTING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA
(Occupational Safety and Health Administration) STANDARDS.
«Attention: Au moment de l’entretien des
“Caution: Label all wires prior to
disconnection when servicing controls. W iring
errors can cause improper operation.”
commandes, étiquetez tous les fils avant de
les débrancher. Des erreurs de câblage
peuvent entraîner un fonctionnement
inadéquat et dangereux.»
CAUTION
DR YERS SHOULD NEVER BE LEFT UNA TTENDED WHILE IN OPERA TION.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLA Y ON OR NEAR THE DRYER(S).
CHILDREN
SHOULD BE SUPER VISED IF NEAR DRYERS IN OPERA TION.
FOR YOUR SAFETY
DO NOT DR Y MOP HEADS IN THE DRYER.
DO NOT USE DR YER IN THE PRESENCE OF DR Y CLEANING FUMES.
WARNING
UNDER NO CIRCUMSTANCES should the dryer door switch, lint door switch, or the
heat safety circuit 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 RESUL T .
WARNING
DRYER MUST NEVER BE OPERA TED WITHOUT THE LINT FIL TER/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 manual included with the dryer.
Dryer must not be installed or stored in an area where it
The wiring diagram for the dryer is located in the front electrical control box area.
will be exposed to water or weather.
IMPORTANT
Dryer must be installed in a location/environment, which the ambient temperature
remains between 40° F (4.44° C) and 130° F (54.44° C).
Table of Contents
SECTION I
IMPORTANT INFORMATION ............................................................................... 3
A. Receiving and Handling ............................................................................................................... 3
B. Safety Precautions ...................................................................................................................... 4
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION .....................................6
A. Specifications ............................................................................................................................. 6
B. Component Identification ............................................................................................................ 8
SECTION III
INSTALLATION PROCEDURES .........................................................................1 0
A. Location Requirements ............................................................................................................. 10
B. Unpacking and Setting Up ........................................................................................................ 11
C. Dryer Enclosure Requirements .................................................................................................. 14
D. Fresh Air Supply Requirements ................................................................................................. 15
E. Exhaust Requirements ............................................................................................................... 16
F. Electrical Information ................................................................................................................ 24
G . Gas Information ........................................................................................................................ 30
H. Steam Information .................................................................................................................... 34
I. Preparation For Operation and Start-Up ................................................................................... 38
J. Preoperational T ests ................................................................................................................. 39
K. Shutdown Instructions............................................................................................................... 41
SECTION IV
SERVICE/PARTS INFORMATION ...................................................................... 4 2
A. Service ..................................................................................................................................... 42
B. Parts ........................................................................................................................................ 42
SECTION V
WARRANTY INFORMATION ............................................................................... 43
A. Returning W arranty Cards......................................................................................................... 43
B. Warranty .................................................................................................................................. 43
C. Returning Warranty Parts .......................................................................................................... 43
SECTION VI
ROUTINE MAINTENANCE .................................................................................. 4 5
A. Cleaning ................................................................................................................................... 45
B. Adjustments ............................................................................................................................. 47
C. Lubrication ............................................................................................................................... 47
SECTION VII
TROUBLESHOOTING ...........................................................................................48
SECTION VIII
DATA LABEL INFORMATION .............................................................................5 5
A. Data Label ............................................................................................................................... 55
SECTION IX
REVERSING TIMER SPIN/DWELL ADJUSTMENTS..................................... 5 7
SECTION X
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS........................................................................................................58
SECTION XI
BURNER AND BASKET (TUMBLER)/LINT CHAMBER
MANUAL RESET HI-LIMIT INSTRUCTIONS..................................................6 1
Gas Models Only ........................................................................................................................... 61
Electric or Steam Models Only ....................................................................................................... 62
SECTION I
IMPORTANT INFORMA TION
A. RECEIVING AND HANDLING
The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or
optional box) as a means of preventing damage in transit. Upon delivery , the dryer and/or packaging, and wooden
skid should be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect further
before delivering carrier leaves.
Dryers damaged in shipment:
1.
ALL dryers should be inspected upon receipt and before they are signed for.
2. If there is suspected damage or actual damage, the trucker ’s receipt should be so noted.
3. If the dryer is damaged beyond repair, it should be refused. Those dryers which were not damaged in a
damaged shipment should be accepted, but the number received and the number refused must be noted
on the receipt.
4. If you determine that the dryer was damaged after the trucker has left your location, you should call the
delivering carrier’s freight terminal immediately and file a claim. The freight company considers this concealed
damage. This type of freight claim is very difficult to get paid and becomes extremely difficult when more
than a day or two passes after the freight was delivered. It is your responsibility to file freight claims.
Dryer/parts damaged in transit cannot be claimed under warranty.
5. Freight claims are the responsibility of the consignee, and ALL claims must be filed at the receiving end.
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 be transported and handled in an upright position at ALL times.
3
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 RESUL T .
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. Purchaser and user should consult the local gas supplier for proper instructions to be followed in the event
the user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of
e. Immediately call your gas supplier from a neighbor’ s phone. Follow the gas supplier’s instructions.
f. If you cannot reach your gas supplier, call the fire department.
4. Installation and service must be performed by a qualified installer, service agency , or gas supplier.
5. Dryers must be exhausted to the outdoors.
6. Although ADC produces a very versatile dryer, there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
ALL occupants.
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 RESUL T .
WARNING: DO NOT dry rags or articles coated or contaminated with gasoline, kerosene, oil, paint,
or wax.
EXPLOSION COULD RESUL T .
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a
fire hazard.
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or
similarly textured rubber materials. Drying in a heated basket (tumbler) may damage
plastics or rubber and may be a fire hazard.
4
7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust
ductwork, and inside the dryer. The frequency of inspection and cleaning can best be determined from
experience at each location.
WARNING: The collection of lint in the burner area and exhaust ductwork can create a potential fire
hazard.
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the
National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
NOTE: Failure to do so will VOID THE WARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint door switch, or the heat safety
circuit ever be disabled.
W ARNING: PERSONAL INJURY OR FIRE COULD RESUL T .
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
11. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articles left in the dryer after the drying and cooling cycles have been completed can
create a fire hazard.
12. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
13. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%), 75 lbs (34 kg) of its rated capacity .
W ARNING: YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND
THE GAS SUPPL Y OR THE STEAM SUPPL Y BEFORE ANY COVERS OR
GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS
FOR CLEANING, ADJUSTING , INST ALLA TION, OR TESTING OF ANY
EQUIPMENT PER OSHA (Occupational Safety and Health Administration)
STANDARD.
IMPORTANT: Dryer must be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).
5
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION
A. SPECIFICATIONS
MAXIM UM C AP ACITY (DRY W EIGHT) 115 lbs 52.2 kg
BAS K ET (T UM BLER) DIA METE R 42 ” 106.7 cm
BASKET (TUMBLER) DEPTH 42”
BASKET
BLO W ER M OTO R 3 H P
DO O R OPENIN G
BAS K ET (T UM BLER) VO LUM E 33 . 7 c u. ft.
DRYERS PER 20’/40’ CONTAINER 4/8
DRYERS PER 45’/48’ TRUCK 9/10
Shaded areas are stat ed in metric equival ents
(TUMBLER) MOTOR 3/4 HP 0.560 kw
(DIAMETER) 31-3/8” 79.7 cm
VOLTAGE AVAILABLE 120-575v 1ø - 3ø 3, 4w 50/60 Hz
APPROX. WEIGHT (UNCRATED) 1,260 lbs
APPROX. WEIGHT (CRATED) 1,400 lbs
HEAT IN PUT 343,000 btuh
GasElectric
AIRF LO W 2, 1 0 0 c fm
IN LET P I P E C ON NEC TION 1” F. P.T.
OVEN SIZE
KW
60 205,000
72 246,000
KW
60 178 -- 157 161 -- 99 -- 92 82 -- 68 --
72 212 -- 186 189 -VOLTAGE AVAILABLE* 208-575v 3ø 3, 4w 50/60 Hz
APP ROX. WEIGHT
APP ROX. WEIGHT ( C RA TED) 1, 8 7 5 lbs
AIRFLOW 2,100 cfm
C O MP RES S ED AIR VO LUM E 0. 7 5 c fh
AIR CONNECTION 1/8” F.P.T.
STEAM C ON S UM P TION BOI LER HP N ORMAL LOAD
Steam
O P ERATING P RE S S UR E *SUPPLY C ON NEC TI O N RETURN C ON NEC TI O N
125 PSI max
BTUH
(60
375 lbs/hr
HZ
KCAL/HR
)
(50 Hz)
51,600
61,900
APP LIED VO LTAGE/P HAS E/AP P RO X. AM P DRAW**
208/3ø 240/3ø 380/3ø 416/3ø 460/3ø 575/3ø
60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
(UNC RATED ) 1, 7 35 lbs 787 kg
170.1 kg/hr 11
8.6 bar 1-1/4” F.P.T. 1-1/4” F.P.T.
106.7 cm
2.239 kw
0.98 cu.m.
572 kg
635 kg
86,436 kcal/hr
59.5 cmm
50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz
117 -- 108 97 -- 80 --
850.5 kg
59.5 cmm
0.02 cmh
* Refer to the Electrical Service Specification chart on page 25 for detailed electrical information.
** Refer to the Electrical Service Specification chart on page 26 (60 Kw oven), page 27 (72 Kw oven).
IMPORTANT: Steam dryers must be provided with a clean, dry, regulated 80 PSI ± 10 PSI (5.51
bar ± 0.69 bar) air supply .
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
6
Specifications
ADG-1 15ES II (Gas)
ADE-1 15ES II (Electric)
ADS-115ES II (S team)
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
7
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No. Description
1 Microprocessor Control and Keyboard (touch pad) Panel Assembly (controls)
2 Control (top access) Door Assembly
3 Main Door Assembly
4 Lint Door Assembly
5 Lint Drawer
6 Wire Diagram (located behind control door)
7 T op Console (module) Assembly
8
Dryer Rear View
2.
Illus. No. Description
1 Basket (tumbler) Drive Motor Assembly
2 Blower Motor Mount Assembly
3 Impellor (fan/blower) Assembly
4 Idler Bearing Mount Assembly
5 Basket (tumbler) Bearing Mount Assembly
6* Electric Service Relay Box
7 Heating Unit
8 Data Label and Installation Label
* Electric service connections are made in this box.
9
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 S tandards: ANSI Z223.1LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST EDITION (National Electrical
Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91
(Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION
(for Electrical Connections).
A. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 LATEST EDITION,
or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Natural
Gas) or CAN/CGA-B149.2-M91 (L.P . Gas) or LATEST EDITION (for General Installation and Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on noncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. This dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in Section D).
5. Clearance provisions must be made from combustible construction as noted in this manual (refer to Dryer
Enclosure Requirements in Section C).
6. Provisions must be made for adequate clearances for servicing and for operation as noted in this manual
(refer to Dryer Enclosure Requirements in Section C).
7. Dryer must be exhausted to the outdoors as noted in this manual (refer to Exhaust Requirements in
Section E).
8. Dryer must be located in an area where correct exhaust venting can be achieved as noted in this manual
(refer to Exhaust Requirements in Section E).
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be necessary.
9. The dryer must be installed with a proper exhaust duct connection to the outside.
10 The dryer must be installed with provisions for adequate combustion and make-up air supply .
10
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint build up.
IMPORTANT: Dryer must be installed in a location/environment, which the ambient
temperature remains between 40º F (4.44º C) and 130º F (54.44º C).
B. UNPACKING AND SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in an upright position at ALL times.
The dryer can be moved to its final location while still attached to the skid or with the skid removed. T o unskid the
dryer, locate and remove the four (4) lag bolts securing the base of the dryer to the wooden skid. Two (2) are
located at the rear base (remove the back panel for access), and two (2) are located in the bottom of the lint
chamber. T o remove the two (2) lag bolts located in the lint chamber area, remove the lint drawer and the two (2)
Phillips head screws securing the lint door in place.
NOTE: Lint door cannot be removed totally from dryer due to a safety chain. The chain is secured to
the dryer and door with special tamperproof screws. The safety chain must not be removed
or cut from the lint door. Once these lag bolts are of f, remove the eight (8) nuts and bolts
holding the skid together and take the skid apart. The dryer can now be removed from the
skid and set into place.
1. Leveling Dryer
a. To level dryer, place 4-inch (10.16 cm) square metal shims (refer to the illustration above) or other
suitable material under the base pads. It is suggested that the dryer be tilted slightly to the rear.
11
2. The V-belts are disconnected from the basket drive motor for shipping. Reconnect V-belts before starting
the dryer.
a. To reconnect V-belts
1) Remove hardware holding back (belt) guard and remove guard from dryer.
2) Lay one (1) belt into motor sheave (pulley) groove and wind belt into corresponding groove of the
idler pulley by rotating the idler pulley by hand. Rotate the idler pulley an extra turn or two (2) to
insure that the belt is tracking properly in the motor sheave (pulley) and idler pulley grooves without
twisting.
3) Repeat procedure to reconnect the remaining belt.
4) Replace back (belt) guard and hardware.
3. If more headroom is needed when moving dryer into position, the top console (module) may be removed.
a. To remove top console (module)
1) Disconnect the ground wire (A) at the rear upper left hand corner of dryer.
2) Remove the eight (8) sets of nuts and washers (B) holding the console (module) to base.
3) Open the control door and control panel, and disconnect the white 15-pin plug connector (C) located
in the base of the control box.
4) Disconnect white plug connector located outside backside of the control box (provides power to
heat circuit).
5) Lift the console (module) off of the dryer base.
IMPORTANT: The dryer must be transported and handled in an upright position at ALL times.
12
4.
Exhaust Transition Piece
WARNING
An exhaust duct transition piece is shipped inside of the dryer’s
tumbler and MUST be installed on the dryer’s
exhaust duct, with the hardware provided, BEFORE
location venting is connected to the dryer.
THIS EXHAUST DUCT TRANSITION PIECE
MUST BE INSTALLED FIRST!
Failure to observe this installation requirement may result in
damage to the dryer, create a FIRE HAZARD and will VOID
the manufacturer’s warranty.
012999JEV-GS/cj P/N: 114092
a. Inside the basket (tumbler) of this dryer is an
exhaust transition piece that must be installed on
the outlet of the exhaust before any further venting
is connected:
1) Remove the exhaust transition piece from the
basket (tumbler) and place it on the exhaust
outlet.
2) Using the screws provided, secure the exhaust
transition piece to the dryer.
NOTE: It is recommended that this joint be taped
as well as ALL other duct joints to prevent
moisture and lint from escaping into the
building.
13
C. DRYER ENCLOSURE REQUIREMENTS
It is recommended that the rear of the dryer be positioned approximately 3 feet (0.91 meters) from the nearest
obstruction (i.e., wall) for ease of installation, maintenance, and service. Bulkheads and partitions should be
made of noncombustible materials. The bulkhead facing must not be closed in
dryer. A 2-inch (5.08 cm) clearance is required.
NOTE: Bulkhead facing should not be installed until after dryer is in place. Ceiling area must be
located a minimum of 12-inches (30.48 cm) above the top of the dryer.
IMPORTANT: Even though a minimum of only 12-inches (30.48 cm) is required, 18-inches (45.72
cm) or more is suggested for steam dryers and especially in cases where sprinkler
heads are over the dryers.
NOTE: When fire sprinkler systems are located above the dryers, a minimum of 18-inches (45.72 cm)
above the dryer console (module) is suggested. Dryers may be positioned sidewall to
sidewall, however, 1 or 2-inches (2.54 or 5.08 cm) is suggested between dryers (or wall) for
ease of installation and maintenance. Allowances must be made for the opening and closing of
the control and lint doors.
ALL the way to the top of the
14
D. FRESH AIR SUPPLY REQUIREMENTS
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and
exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the
make-up air is inadequate, drying time and drying efficiency
switch “fluttering” problems may result, as well as premature motor failure from overheating.
Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An airflow of 2,100 cfm (cubic feet per minute) (59.5 cmm
[cubic meters per minute]) must be supplied to each dryer. As a general rule, an unrestricted air entrance from
the outdoors (atmosphere) of a minimum of 3 square feet (0.28 square meters) is required for each dryer.
To compensate for the use of registers or louvers used over the openings, this make-up air area must be
increased by approximately thirty-three percent (33%). Make-up air openings should not be located in an area
directly near where exhaust vents exit the building.
is not necessary to have a separate make-up air opening for each dryer. Common make-up air openings are
It
acceptable. However, they must be set up in such a manner that the make-up air is distributed equally to ALL
the dryers. The dryer must be installed with provisions for adequate combustion and make-up air supply.
EXAMPLE: For a bank of six (6) gas dryers, two (2) openings measuring 3 feet by 3 feet (9 square feet) (0.91
meters by 0.91 meters [0.84 square meters]) are acceptable.
will be adversely affected. Ignition problems and sail
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 solvent fumes.
Make-up air that is contaminated by dry cleaning solvent fumes will result in
irreparable damage to the motors and other dryer components.
NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.
15
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork
will create excessive back pressure which results in slow drying, increased use of energy , overheating of the
dryer, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler) hi-heat
thermostats. The dryer must be installed with a proper exhaust duct connection to the outside.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors.
CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCTWORK CAN
CREA TE A POTENTIAL FIRE HAZARD.
NOTE: When a dryer is exhausted separately, it is recommended that a back draft damper be
installed.
NOTE: When dryers are exhausted into a multiple (common) exhaust line, each dryer must be
supplied with a back draft damper.
The exhaust ductwork should be laid out in such a way that the ductwork travels as directly as possible to
the outdoors with as few turns as possible. Single or independent dryer venting is recommended.
When single dryer venting is used, the ductwork from the dryer to the outside exhaust outlet must not
exceed 20 feet (6.1 meters). In the case of multiple (common) dryer venting, the distance from the last
dryer to the outside exhaust outlet must not exceed 20 feet (6.1 meters). The shape of the ductwork is not
critical so long as the minimum cross section area is provided. It is suggested that the use of 90º turns in
ducting be avoided; use 30º or 45º angles instead. The radius of the elbows should preferably be 1-1/2
times the diameter of the duct. Excluding basket (tumbler) and dryer elbow connections or elbows used for
outside protection from the weather, no more than two (2) elbows should be used in the exhaust duct run.
If more than two (2) elbows are used, the cross section area of the ductwork must be increased in proportion
to number of elbows added.
ALL ductwork should be smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is
connected. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the building.
Additionally, inspection doors should be installed at strategic points in the exhaust ductwork for periodic
inspection and cleaning of lint from the ductwork.
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must
be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column
(W.C.).
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.
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a. Outside Ductwork Protection
1) To protect the outside end of the horizontal ductwork from the weather , a 90° elbow bent downward
should be installed where the exhaust exits the building. If the exhaust ductwork travels vertically
up through the roof, it should be protected from the weather by using a 180° turn to point the
opening downward. In either case, allow at least twice the diameter of the duct between the duct
opening and the nearest obstruction.
IMPORTANT: DO NOT use screens, louvers, or caps on the outside opening of the exhaust
ductwork.
2. Single Dryer Venting
a. Horizontal V enting
When possible, it is suggested to provide a separate exhaust duct for each dryer. The exhaust duct
should be laid out in such a way that the ductwork travels as directly as possible to the outdoors with as
few turns as possible. It is suggested that the use of 90° turns in ducting be avoided; use 30° or 45°
angles instead. The shape of the exhaust ductwork is not critical so long as the minimum cross section
area is provided.
IMPORTANT: Minimum duct size for a gas, electric, or steam dryer is 14-inches (35.56 cm) for a
round duct or 12-1/2” by 12-1/2” (31.75 cm by 31.75 cm) for a square duct.
DUCT SIZE MUST NOT BE REDUCED ANYWHERE DOWNSTREAM
OF THE DRYER.
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must
be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column
(W.C.).
IMPORTANT: It is recommended that exhaust or booster fans not be used in the exhaust ductwork
system.
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