American Dryer D30 User Manual
D30 Installation Manual
Phase 7
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.
JLA Limited
Meadowcroft Lane, Halifax Road
Ripponden
West Yorkshire, England
HX6 4AJ
T elephone: 01422 822282 / Fax: 01422 824390
JLA Part No. 113239 -5
Retain This Manual In A Safe Place For Future Reference
This product embodies advanced concepts in engineering, design, and safety. If this product is properly maintained, it will
provide many years of efficient, trouble free, and most importantly , safe 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. The manufacturer reserves the
right to make changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to
change or discontinue models. The illustrations included in this manual may not depict your particular dryer exactly.
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. ____________________________
DISTRIBUTOR’S NAME ____________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
D30 Phase 7
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your distributor or JLA. When ordering replacement parts from JLA, you can F AX
your order to JLA at 01422 824390 or telephone your order directly to the JLA Parts Department at 01422 822282. 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 ina-
déquat 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 drawer switch, or
the heat safety 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 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).
T able of Contents
SECTION I
SAFETY PRECAUTIONS ..............................................................................................................................6
SECTION II
SPECIFICATIONS ..........................................................................................................................................8
SECTION III
INSTALLATION PROCEDURES ..............................................................................................................10
A. Unpacking/Setting Up........................................................................................................................................... 10
B . Location Requirements .........................................................................................................................................11
C . Dryer Enclosure Requirements .............................................................................................................................12
D . Fresh Air Supply Requirements ............................................................................................................................ 13
E . Exhaust Requirements ........................................................................................................................................... 14
F . Electrical Information ............................................................................................................................................19
G. Gas Information ..................................................................................................................................................... 24
H . Steam Information ................................................................................................................................................. 28
I. Water Information .................................................................................................................................................33
J. Preparation for Operation/Start-Up....................................................................................................................... 36
K . Preoperational Test ............................................................................................................................................... 37
L. Preoperational Instructions ................................................................................................................................... 39
M. Shutdown Instructions .........................................................................................................................................41
SECTION IV
SERVICE/PARTS INFORMATION ...........................................................................................................42
A. Service ................................................................................................................................................................... 42
B. Parts....................................................................................................................................................................... 42
SECTION V
WARRANTY INFORMATION ...................................................................................................................43
A. Returning W arranty Cards .................................................................................................................................... 43
B. Warranty................................................................................................................................................................ 43
SECTION VI
ROUTINE MAINTENANCE ......................................................................................................................44
A. Cleaning................................................................................................................................................................. 44
B. Adjustments.......................................................................................................................................................... 45
C. Lubrication ............................................................................................................................................................ 45
D. Lint Drawer Removal ............................................................................................................................................. 46
SECTION VII
DATA LABEL INFORMATION .................................................................................................................47
SECTION VIII
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ...................48
SECTION IX
MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS ..................................................................51
A. Phase 7 .................................................................................................................................................................. 51
B . Dual Timer ............................................................................................................................................................. 51
SECTION I
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/user should consult the local gas supplier for proper instructions to be followed in the event the
user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS:
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of ALL occupants.
e. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
f. If you cannot reach your gas supplier, call the fire department.
4. Installation and service must be performed by a qualified installer, service agency , or gas supplier.
5. Dryer(s) must be exhausted to the outdoors.
6. 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: 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.
6 JLA Limited 113239-5
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.
7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork,
and area around the back of the dryer. The frequency of inspection and cleaning can best be determined
from experience at each location.
WARNING: 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 electrically ground the dryer properly will VOID THE WARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or the heat safety
circuit devices ever be disabled.
W ARNING: PERSONAL INJURY OR FIRE COULD RESUL T should the dryer door switch,
lint drawer switch, or heat safety circuit ever be disabled.
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%), 16 lb (7 kg) of its rated capacity.
W ARNING: YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPL Y 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)
STANDARDS.
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).
113239-5 01422 822282 7
SECTION II
SPECIFICATIONS
MAXIMUM CAPACITY (DRY WEIGHT) 25 lb
TUMBL ER DIAMETER 32-3/ 4”
TUMBL ER DEPTH 19”
TUMB L E R VOL UM E 9 . 26 c u f t
TUMBL ER/ DRIVE M OTOR 1/ 2 hp*
BLOWER/FAN MOTOR N / A
DOOR OPE NING (DIAMETER) 2 1-1/2”
DOOR SILL HEIGHT 31”
WATER CONNEC TION 3 /4 ” - 1 1 . 5 N H
3/4” B.S.P.T.
DRYERS PE R 2 0’/40’ CONTAINER 1 4 / 30
DRYERS PE R 4 8’/53’ TRUCK 4 5 / 51
VOLTAGE AVAILABLE 100-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 407 lb
APPROXIMATE SHIPPING WEIGHT 44 6 l b
AIRFLOW
HEAT INPUT 78,000 Btu/ hr
EX HAUST CONNE CTION (DIAME TER) 8 ”
COMPRESSED AIR CONNE CTION N / A
COMPRESSED AIR VOLUME N / A
INLET PIPE CONNECTION 1 /2” F.B.S.P. T.**
VOLTAGE AVAILABLE 208-460V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 407 lb
APPROXIMATE SHIPPING WEIGHT 44 6 l b
AIRFLOW
EX HAUST CONNE CTION (DIAME TER) 8 ”
COMPRESSED AIR CONNE CTION N / A
COMPRESSED AIR VOLUME N / A
OVEN SIZE
kW Btu/hr
15 51,200
20 68,200
24 81,900
VOLTAGE AVAILABLE 100-480V 1,3ø 2,3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 435 lb
APPROXIMATE SHIPPING WEIGHT 474 lb
AIRFLOW
STEAM CONSUMPTION 98 .8 lb / hr
OPERATING STEAM PRESSURE 12 5 psi max
EX HAUST CONNE CTION (DIAME TER) 8 ”
COMPRESSED AIR CONNE CTION 1 /8” F.N .P.T.
COMPRESSED AIR VOLUME 0.75 cf h
Steam*** GasElectric
BOILER HORSEPOWER (NORMAL LOAD) 2.9 Bhp
SUPPLY CONNECTION 1” F.N.P.T.
RETURN CONNECTION 1” F.N.P.T.
Shaded areas are stated in metric equivalents 2/13/04
* Reversing dryer available with 3-phase (3ø) 1/2 hp (0.373 kW) motors standard.
** Size of piping to dryer varies with installation conditions. Contact factory for assistance.
*** Specify air-operated or electromechanical steam damper system. Air-operated steam damper system must be provided with clean, dry, and
regulated 80 psi ± 10 psi (5.51 bar ± 0.68 bar) air supply.
kcal/hr
12,900
17,200
20,600
60 Hz
50 Hz
60 Hz
50 Hz
60 Hz
50 Hz
460 cfm
383 cfm
1/2” B.S.P.T.
460 cfm
383 cfm
460 cfm
383 cfm
(Outside North America)
(CE and Australia Only)
11.3 k g
83.2 cm
48.3 cm
262.21 L
0.373 kW
54.61 cm
78.74 cm
(North America)
184.6 kg
202.1 kg
13 cmm
10.85 cmm
19,656 kcal/hr
20.32 cm
184.6 kg
202.1 kg
13 cmm
10.85 cmm
20.32 cm
197.3 kg
214.8 kg
13 cmm
10.85 cmm
44.8 kg/hr
8.6 bar
20.32 cm
0.02 cmh
NOTE: The manufacturer reserves the right to make changes in specifications at any time without
notice or obligation.
8 JLA Limited 113239-5
Specifications
NOTE: The manufacturer reserves the right to make changes in specifications at any time without
notice or obligation.
113239-5 01422 822282 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. UNPACKING/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) 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 drawer.
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.
Leveling Dryer
The dryer is equipped with four (4) leveling legs, one (1) at each corner of the base. Two (2) are located at the
rear of the dryer base, and two (2) are located in the lint chamber (coop). To increase bearing life and improve
efficiency, the dryer should be tilted slightly to the rear.
10 JLA Limited 113239-5
B. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 LATEST
EDITION, or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P .] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “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. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in
5. Clearance provisions must be made from noncombustible construction as noted in this manual (refer to
Dryer Enclosure Requirements in Section C).
Section D).
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. The dryer must be installed with a proper exhaust duct connection to the outside 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 adequate clearance for air openings into the combustion chamber.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint buildup.
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).
113239-5 01422 822282 11
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of
12-inches (30.48 cm) above the dryer’s outer top; 18-inches (45.72 cm) for steam dryers, except along the front
of the dryer, which may be closed if desired.
NOTE: Allowances must be made for opening the control door .
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease of maintenance.
* 1-inch (2.54 cm) maximum for electric dryers.
** 18-inch (45.72 cm) minimum for steam dryers.
NOTE: Air considerations are important for proper and efficient operation.
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. It is suggested that the dryer be positioned about 2 feet
(0.61 meters) away from the nearest obstruction for ease of installation, maintenance, and service (to be measured
from the back guard). Refer to the illustration above for details.
12 JLA Limited 113239-5
D. FRESH AIR SUPPLY REQUIREMENTS
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.
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 (atmosphere) measuring a minimum size of
8-inches by 10-inches (20.32 cm by 25.4 cm) is required for each dryer. (Based on 1 inch
1,000 Btu [251.9958 kcal].)
To compensate for the use of registers or louvers used over the openings, this area must be increased by
approximately thirty-three percent (33%). Make-up air openings should not be located in an area directly near
where exhaust vents exit the building.
It is not necessary to have a separate make-up air opening for each dryer. Common make-up air openings are
acceptable. However, they must be set up in such a manner that the make-up air is distributed equally to all the
dryers.
EXAMPLE: For a bank of 4 dryers, 2 unrestricted openings measuring 12-inches by 13-inches (30.5 cm by 33.1
cm) are acceptable.
2
[6.4516 cm2] per
A = 12-inches (30.5 cm) B = 13-inches (33.1 cm)
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.
113239-5 01422 822282 13
E. 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-limit, or lint chamber hi-heat protector thermostat. 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.
When possible, it is suggested to provide a separate (single) exhaust duct for each dryer.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCTWORK CAN
CREA TE A POTENTIAL FIRE HAZARD.
The exhaust ductwork should be laid out in such a way that the ductwork travels as directly as possible to the
outdoors with as few turns as possible. The shape of the ductwork is not critical as long as the minimum cross
section area is provided. Single or independent dryer venting is recommended.
It is suggested that the use of 90° turns
The ductwork should be smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is connected.
ALL ductwork joints must be taped to prevent moisture and lint from escaping into the building. Additionally,
inspection doors should be installed at strategic points in the exhaust ductwork for periodic inspection and
cleaning.
be avoided; use 30° or 45° angles instead.
IMPORTANT: When connecting ductwork to the dryer exhaust duct, be sure that when screws are
used they DO NOT restrict the operation (both opening and closing) of the damper.
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.
T o 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 (i.e., roof or ground level).
IMPORTANT: DO NOT use screens, louvers, or caps on the outside opening of the exhaust
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.).
IMPORTANT: It is recommended that exhaust or booster fans not be used in the exhaust ductwork
system.
14 JLA Limited 113239-5
NOTE: As per the National Fuel Gas Code, “Exhaust ducts for Type 2 clothes dryers shall be
constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in
strength and corrosion resistance to ducts made of galvanized sheet steel not less than 26
gauge (0.0195-inches [0.50 mm]) thick.”
SINGLE DRYER VENTING
IMPORTANT: For exhaust duct runs over 85 feet (25.9 meters) a minimum size of 10-inches (25.4
cm) must be used.
HORIZONTAL VENTING
When a single 8-inch (20.32 cm) horizontal vent is used, the ductwork to the outlet cannot exceed 85 feet
(25.9 meters), refer to Illus. A below. This calculation of 85 feet (25.9 meters) compensates or allows for the
use of a maximum of only one (1) elbow (which is the outside outlet protection).
Illus. A
113239-5 01422 822282 15
VERTICAL VENTING
When vertical single 8-inch (20.32 cm) venting is used (refer to Illus. B below), the ductwork from the dryer to
the outside outlet
of three (3) elbows including the two (2) elbows creating the 180° (turned downward) outside outlet.
cannot exceed 55 feet (16.7 meters). This calculation compensates for the use of a maximum
Illus. B
If the length of the ductwork run or quantity of elbows used exceeds the above noted specifications, the
cross-sectional area of the ductwork must be increased in proportion to the number of elbows or duct run
added.
IMPORTANT: For extended ductwork runs, the cross section area of the duct can only be increased
to an extent. For extended ductwork runs, a professional heating, ventilating, and
air-conditioning (HVAC) firm must be consulted for proper venting information.
16 JLA Limited 113239-5
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