JLA D120 User manual

D120 Installation Manual
Phase 7 / Non-Coin / Dual Timer / S.A.F.E. System
Part No. 113375-16
JLA Limited
Meadowcroft Lane, Halifax Road
Ripponden
West Yorkshire, England
HX6 4AJ
Telephone: [phone] / Fax: [phone]
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 FAIRE 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.
WARNING: For your safety the
information in this manual must be
followed to minimize the risk of fire or
explosion and to prevent property
damage, personal injury or death.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT 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.

2 JLA Limited 113375-16
“IMPORTANT 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.
FOR YOUR SAFETY
Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this or any other appliance.
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.
We have tried to make this manual as complete as possible and hope you will find it useful. The
manufacturer reserves the right to make changes from time to time, without notice or obligation, in
prices, specifications, colors, and material, and to change or discontinue models. The illustrations included
in this manual may not depict your particular dryer exactly.
IMPORTANT
For your convenience, log the following information:
DATE OF PURCHASE ________________________________________________________ MODEL NO. _____________
DISTRIBUTOR’S NAME _______________________________________________________________________________
SERIAL NUMBER(S) __________________________________________________________________________________
___________________________________________________________________________________________________
___________________________________________________________________________________________________
Replacement parts can be obtained from your distributor or JLA. When ordering replacement parts from JLA, you
can FAX 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.
These instructions are only valid if the following country code is on the appliance… If this code is not present on the
appliance, it is necessary to refer to the technical instructions which will provide the necessary information concerning
the modification of the appliance to the condition of use for the country.
In accordance with EN ISO 3166-1, the names of countries shall be represented by the following codes:
GB United Kingdom
IE Ireland
D120
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 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.

113375-16 Telephone [phone]
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,
adjusting, installation, or testing of any
equipment per OSHA standards.
Please observe all safety precautions
displayed on the equipment and/or specified
in the installation manual included with the
dryer.
CAUTION
Dryer(s) should never be left unattended while
in operation.
“Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper operation.”
«Attention: Lor des opérations d’entretien des
commandes étiqueter tous fils avant de les
déconnecter. Toute erreur de câblage peut
étre une source de danger et de panne.»
WARNING
Children should not be allowed to play on or
near the dryer(s). Children should be
supervised if near dryer(s) in operation.
Under no circumstances should the dryer door
switch(es), lint door/drawer switch(es), or heat
safety circuit(s) ever be disabled.
Do not modify this appliance.
The dryer must never be operated with any of
the back guards, outer tops, or service panels
removed. Personal injury or fire could result.
The dryer must never be operated without the
lint filter/screen in place, even if an external
lint collection system is used.
If the hi-limit switch trips, a service call is
required to investigate the reason and resolve
the issue.
FOR YOUR SAFETY
Do not dry mop heads in the dryer. Do not
use dryer in the presence of dry cleaning
fumes.
The dryers must not be installed or stored in
an area where it will be exposed to water
and/or weather.
The wiring diagram for the dryer is located in
the front electrical control box area.
Table of Contents ____________________
List of Acronyms _____________________
D.M.S. Drill Measurement Size
DSI Direct Spark Ignition
HSI Hot Surface Ignition
HVAC Heating, Ventilating, and Air-Conditioning
in WC Inches of Water Column
L.E.D. Light Emitting Diode
L.P. Liquid Propane
OSHA Occupational Safety and Health Administration
S.A.F.E. Sensor Activated Fire Extinguishing
UL Underwriters Laboratory
Safety Precautions .................................... 4
Mechanical Specifications ........................ 6
Installation Procedures ............................. 8
Location Requirements .................................................. 8
Unpacking / Setting Up .................................................. 8
Dryer Enclosure Requirements ..................................... 9
Fresh Air Supply Requirements ..................................... 9
Exhaust Requirements................................................. 10
Electrical Information ................................................... 12
Gas Information ........................................................... 13
Steam Information ........................................................ 15
Preparation for Operation / Start-Up ............................ 17
Preoperational Test ...................................................... 17
Compressed Air Requirements.................................... 18
Shutdown Instructions.................................................. 19
Service / Parts Information ..................... 19
Service ......................................................................... 19
Parts ............................................................................. 19
Warranty Information .............................. 19
Returning Warranty Cards ........................................... 19
Warranty ....................................................................... 19
Routine Maintenance............................... 19
Adjustments ................................................................. 20
Lubrication.................................................................... 20
Manual Reset
Burner Hi-Limit Instructions ................... 20
Phase 7 ........................................................................ 20
Dual Timer .................................................................... 20
Data Label Information............................ 21
Procedure for Functional Check
of Replacement Components .................. 21
Water Information .................................... 22

4 JLA Limited 113375-16
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.
The dryer must never be operated with any of the
back guards, outer tops, or service panels removed.
Personal injury or fire could result.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Do not spray aerosols in the vicinity of this appliance while
it is in operation.
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.
What 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 gas supplier.
Dryer(s) must be exhausted to the outdoors.
Although JLA 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, industrial chemicals, or “all
purpose” cleaner. Explosion could result.
Do not dry rags or articles coated or contaminated
with gasoline, kerosene, oil, paint, or wax.
Explosion could result.
Do not dry mop heads. Contamination by wax or
flammable solvents will create a fire hazard.
Do not use heat for drying articles that contain
plastic, foam, sponge rubber, or similarly textured
rubberlike materials. Drying in a heated tumbler may
damage plastics or rubber and may be a fire hazard.
The possible presence of residual quantities of aggressive
or decomposed chemicals in the load may produce damage
to the machine and harmful fumes.
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.
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.
Under no circumstances should the dryer door switch, the
lint drawer switch, or the heat safety circuit ever be disabled.
!WARNING
Personal injury or fire could result.
This dryer is not to be used in the presence of dry cleaning
solvents or fumes.
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.
Read and follow all caution and direction labels attached to
the dryer.
For safety, proper operation, and optimum performance, the
dryer must not be operated with a load less than sixty-six
percent, 79 lb (35.83 kg) of its rated capacity.
!WARNING
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, adjusting, installation, or
testing of any equipment per OSHA standards.
IMPORTANT: The dryer must be installed in a location/
environment, which the ambient temperature remains
between 40° F (4.44° C) and 130° F (54.44° C).
!WARNING
Disconnect power before resetting the hi-limit. The
hi-limit is located on the left side of the burner box,
looking at the burner from the back of the dryer.
Press and release and the hi-limit will reset.

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IMPORTANT: This appliance must only be installed and operated in the country of destination indicated on the dryer’s data
plate. If the appliance is to be installed and operated in a country other than the one indicated on the data plate, a data
plate amendment must be obtained from JLA Limited.
IEC335 applies.
NOTES ________________________________________________________________________________________________________________________
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_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________

6 JLA Limited 113375-16
MAXIMUM CAPACITY (DRY WEIGHT) 120 lb 54.43 kg
TUMBLER DIAMETER 44-1/8” 112.09 cm
TUMBLER DEPTH 40-9/16” 103.02 cm
TUMBLER VOLUME 35.90 cu ft 1,016.57 L
TUMBLER / DRIVE MOTOR 1 hp 0.75 kW
BLOWER / FAN MOTOR 3 hp 2.24 kW
DOOR OPENING (DIAMETER) 31-3/8” 79.71 cm
DOOR SILL HEIGHT 26-5/8” 67.64 cm
WATER CONNECTION 3/4”-11.5 NH (North America)
3/4” B.S.P.T. (Outside North America)
DRYERS PER 20’/40’ CONTAINER 3 / 7
DRYERS PER 48’/53’ TRUCK 9 / 10
VOLTAGE AVAILABLE 208-480v 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,370 lb 621.42 kg
APPROXIMATE SHIPPING WEIGHT 1,430 lb 648.64 kg
AIRFLOW 60 Hz 2,800 cfm 79.29 cmm
50 Hz 2,333 cfm 66.06 cmm
HEAT INPUT 375,000 Btu/hr 94,498 kcal/hr
EXHAUST CONNECTION (DIAMETER) 16 ” 40.64 cm
COMPRESSED AIR CONNECTION 1/4” Quick Connection
COMPRESSED AIR VOLUME 2.50 cfh 0.07 cmh
INLET PIPE CONNECTION 1” F.B.S.P.T.
1” B.S.P.T. (CE and Australia Only)
VOLTAGE AVAILABLE 208-480v 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,370 lb 621.42 kg
APPROXIMATE SHIPPING WEIGHT 1,430 lb 648.64 kg
AIRFLOW 60 Hz 2,800 cfm 79.29 cmm
50 Hz 2,333 cfm 66.06 cmm
EXHAUST CONNECTION (DIAMETER) 16 ” 40.64 cm
COMPRESSED AIR CONNECTION 1/4” Quick Connection
COMPRESSED AIR VOLUME 2.50 cfh 0.07 cmh
OVEN SIZE
kW Btu/hr kcal/hr
72 245,729 61,923
VOLTAGE AVAILABLE 208-480v 3ø 3,4w 50/60 Hz
APPROXIMATE NET WEIGHT 1,450 lb 657.71 kg
APPROXIMATE SHIPPING WEIGHT 1,500 lb 680.39 kg
AIRFLOW 60 Hz 2,800 cfm 79.29 cmm
50 Hz 2,333 cfm 66.07 cmm
STEAM CONSUMPTION 450 lb/hr 204.12 kg/hr
OPERATING STEAM PRESSURE 125 psi max 8.62 bar
EXHAUST CONNECTION (DIAMETER) 16 ” 40.64 cm
COMPRESSED AIR CONNECTION 1/4” Quick Connection
COMPRESSED AIR VOLUME 3.25 cfh 0.09 cmh
BOILER HORSEPOWER (NORMAL LOAD) 13 Bhp
SUPPLY CONNECTION (1) 1-1/4” N.P.T. (Female)
RETURN CONNECTION (1) 1-1/4” N.P.T. (Female)
ELECTRIC
Mechanical Specifications _______________________________________________________
GAS
STEAM
IMPORTANT: Dryer requires a clean, dry and regulated 80 PSI +/- 10 PSI (5.51 bar +/- 0.68 bar) air supply.
NOTE:
The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.
Shaded areas are stated in metric equivalents 1/9/15

113375-16 Telephone [phone]
Mechanical Specifications _______________________________________________________
NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.

8 JLA Limited 113375-16
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: ANSI Z223.1-LATEST
EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-
LATEST EDITION (National Electrical Code) or in Canada,
the installation must conform to applicable Canadian
Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/
CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for
General Installation and Gas Plumbing) or Canadian
Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST
EDITION (for Electrical Connections).
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).
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.”
The dryer must not be installed or stored in an area where it
will be exposed to water and/or weather.
The dryer is for use in noncombustible locations.
Provisions for adequate air supply must be provided as noted
in this manual (refer to Fresh Air Supply Requirements
section).
Clearance provisions must be made from combustible
construction as noted in this manual (refer to Dryer Enclosure
Requirements section).
Provisions must be made for adequate clearances for
servicing and for operation as noted in this manual
(refer to Dryer Enclosure Requirements section).
The dryer must be installed with a proper exhaust duct
connection to the outside as noted in this manual (refer to
Exhaust Requirements section).
The dryer must be located in an area where correct exhaust
venting can be achieved as noted in this manual (refer to
Exhaust Requirements section).
IMPORTANT: The dryer should be located where a
minimum amount of exhaust ducting will be necessary.
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: The dryer must be installed in a location/
environment, which the ambient temperature remains
between 40° F (4.44° C) and 130° F (54.44° C).
Unpacking / Setting Up ______________
Remove protective shipping material (i.e., plastic wrap and
optional shipping box) from the dryer.
IMPORTANT: The dryer must be transported and handled
in an upright position at all times.
The dryer can be moved to its final location while still
attached to the skid or with the skid removed. To remove
the skid from the dryer, locate and remove the four lag bolts
securing the base of the dryer to the wooden skid. Two are
at the rear base, and two are located in the bottom of the lint
chamber. To remove the two lag bolts located in the lint
chamber area, remove the front panel.
Leveling Dryer
To level the dryer, place 4-inch (10.16 cm) square metal
shims or other suitable material under the base pads. It is
suggested that the dryer be tilted slightly to the rear.
If more headroom is needed when moving the dryer into
position, the top console (module) may be removed.
To Remove Top Console (Module)
• Disconnect the ground wire (A in the illustration below)
located at the rear upper left corner of the dryer.
• Remove the six sets of nuts and washers (B in the
illustration below) holding the console (module) to the
base.
• Disconnect the white plug connector (C in the
illustration below) located on the top of the rear electric
service/relay box (provides power to the heat circuit).
• Disconnect air connection from the 3-way micro valve.
• Lift the console (module) off of the dryer base.
IMPORTANT: The dryer must be transported and handled
in an upright position at all times.

113375-16 Telephone [phone]
Dryer Enclosure Requirements ______
Even though a 12-inch (30.48 cm) clearance is acceptable,
it is recommended that the rear of the dryer be positioned
approximately 24-inches (60.96 cm) from the nearest
obstruction (i.e., wall) for ease of installation, maintenance,
and service. Bulkheads and partitions should be made from
noncombustible materials. The clearance between the
bulkhead header and the dryer must be a minimum of
4-inches (10.16 cm) and must not extend more than 4-inches
(10.16 cm) to the rear of the front. A 2-inch (5.08 cm)
clearance is required between the bulkhead facing and the
top of the dryer.
Air supply (make-up air) must be given careful consideration
to assure proper performance of each dryer. As a general
rule, an unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1.4 feet2(0.13 meters2) is
required for each dryer. (Based on 1 inch2per 1,000 Btu.)
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. Make-up air openings
should not be located in an area directly near where exhaust
vents exit the building.
NOTE: Bulkhead facing should not be installed until after
the dryer is in place. Ceiling area must be located a
minimum of 12-inches (30.48 cm) above the dryer top
console (module) and 18-inches (45.72 cm) for steam
models.
When fire sprinkler systems are located above the dryers,
a minimum of 18-inches (45.72 cm) above the dryer
console (module) is required. Dryers may be positioned
sidewall to sidewall, however, 1 or 2-inches (2.54 or 5.08
cm) is suggested for ease of installation and
maintenance. Allowances must be made for the opening
and closing of the control door and the lint door.
Fresh Air Supply Requirements ______
This appliance may only be installed in a room that meets
the appropriate ventilation requirements specified in the
national installation regulations.
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.
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 four dryers, two unrestricted
openings measuring 27.7-inches by 30-inches (70.358 cm
by 76.2 cm), (11.5 feet2[1.068385 meters2]) are acceptable.
Allowances must be made for remote or constricting
passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
A = 27.7-inches (70.358 cm)
B = 30-inches (76.2 cm)

10 JLA Limited 113375-16
NOTE 1 Opening must be 2-inches (5.08 cm) larger than the duct (all the
way around). The duct must be centered within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest
obstruction.
Outside Ductwork Protection
To protect the outside end of the horizontal ductwork from
the weather, a 90° elbow bent downward should be installed
where the exhaust exits the building. If the ductwork travels
vertically up through the roof, it should be protected from
the weather by using a 180° turn to point the opening
downward. In either case, allow at least twice the diameter
of the duct between the duct opening and the nearest
obstruction.
IMPORTANT: Do not use screens, louvers, or caps on the
outside opening of the exhaust ductwork.
Single Dryer Venting
Where 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 the ducting be
avoided; use 30° and/or 45° angles instead. The shape of
the exhaust ductwork is not critical so long as the minimum
cross section area is provided.
NOTE: It is recommended that exhaust or booster fans
not be used in the exhaust ductwork system except where
necessary to maintain exhaust back pressure (in the
exhaust duct) between zero and 0.3 inch water column.
Where employed, booster fans must not activate the dryer
airflow proving switch (sail switch) when the dryer is not in
operation.
When the exhaust ductwork passes through a wall,
ceiling, or roof made of combustible materials, the
opening must be 2-inches (5.08 cm) larger than the duct
(all the way around). The duct must be centered within
this opening.
As per the National Fuel Gas Code, “Exhaust ducts for
type 2 clothes dryers shall be constructed of sheet metal
or other noncombustible material. Such ducts shall be
equivalent in strength and corrosion resistance to ducts
made of galvanized sheet steel not less than 26 gauge
(0.0195-inches [0.50 mm]) thick.”
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.
Exhaust Requirements _______________
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 shut
down of the burner by the airflow (sail) switches, burner
hi-limits, or tumbler hi-heat thermostats. The dryer must be
installed with a proper exhaust duct connection to the
outside.
The design of the flue system shall be such that any
condensate formed when operating the appliance from cold
shall either be retained and subsequently re-evaporated or
discharged.
CAUTION: This dryer produces combustible lint and
must be exhausted to the outdoors.
Improperly sized or installed exhaust ductwork can
create a potential fire hazard.
NOTE: When dryers are exhausted into a multiple
(common) exhaust line, each dryer must be supplied with
a back draft damper.
The ductwork should be laid out in such a way that the
ductwork travels as directly as possible to the outdoors with
as few turns as possible. Single or independent dryer venting
is recommended.
When single dryer venting is used, the ductwork from the
dryer to the outside exhaust outlet should not exceed 20
feet (6.09 meters). In the case of multiple (common) dryer
venting, the distance from the last dryer to the outside
exhaust outlet should not exceed 20 feet (6.09 meters). The
shape of the ductwork is not so critical so long as the
minimum cross-sectional area is provided. It is suggested
that the use of 90° turns be avoided; use 30° and/or 45°
bends/angles instead. The radius of the elbows should
preferably be 1-1/2 times the diameter of the duct. Excluding
tumbler/dryer elbow connections or elbows used for outside
protection from the weather, no more than two elbows should
be used in the exhaust duct run. If more than two elbows
are used, the cross-sectional area of the ductwork must be
increased in proportion to the number of elbows used.
All ductwork 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 ductwork
joints must be taped to prevent moisture and lint from
escaping into the building. 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/magnehelic in the exhaust duct must be no
less than 0 and must not exceed 0.3 in WC (0.74 mb).

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IMPORTANT: For extended ductwork runs, the cross
section area of the ductwork can only be increased to an
extent. Maximum proportional ductwork runs cannot
exceed 20 feet (6.09 meters) more than the original
limitations of 20 feet (6.09 meters) with two elbows.
When the ductwork approaches the maximum limits as
noted in this manual, a professional HVAC firm should be
consulted for proper venting information.
All ductwork 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 ductwork
joints must be taped to prevent moisture and lint from
escaping into the building. Inspection doors should be
installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning of lint from the ductwork.
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.
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 the flow and should be
spaced at least 48-3/4” (123.82 cm) apart. The main duct
should be tapered, with the diameter increasing before each
individual 16-inch (40.54 cm) duct is added.
IMPORTANT: When exhausted into a multiple (common)
exhaust line, a back draft damper must be installed at
each dryer duct.
No more than four dryers should be connected to one
main common duct.
The main duct may be any shape or cross-sectional area,
so long as the minimum cross section area is provided. The
illustration on the next page shows the minimum cross
section area for multiple dryer round or square venting.
These figures must be increased 10 inches2(64.52
centimeters2) when rectangular main ducting is used, and
the ratio of duct width to depth should not be greater than
3-1/2 to 1. These figures must be increased in proportion if
the main duct run to the last dryer to where it exhausts to
the outdoors is unusually long (over 20 feet [6.09 meters])
or has numerous elbows (more than two) in it. In calculating
ductwork size, the cross-sectional area of a square or
rectangular duct must be increased twenty percent for each
additional 20 feet (6.09 meters). The diameter of a round
exhaust must be increased ten percent for each additional
20 feet (6.09 meters). Each 90° elbow is equivalent to an
additional 40 feet (12.19 meters) and each 45° elbow is
equivalent to an additional 20 feet (6.09 meters).
NOTE 1 Opening from combustible materials must be 2-inches (5.08 cm)
larger than the duct (all the way around). The duct must be centered
within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest
obstruction.
A = 20 feet (6.09 meters)
B = 16-inches (40.64 cm) C = 20 feet (6.09 meters)
D = 16-inches (40.64 cm)
IMPORTANT: The minimum duct size is 16-inches (40.64
cm) for a round duct and 14-1/4” x 14-1/4” (36.2 cm x 36.2
cm) for a square duct. The duct size must not be reduced
anywhere downstream of the dryer.
Exhaust back pressure measured by a manometer/
magnehelic in the exhaust duct must be no less than 0
and must not exceed 0.3 in WC (0.74 mb).
NOTE: It is recommended that exhaust or booster fans
not be used in the exhaust ductwork system except where
necessary to maintain exhaust back pressure (in the
exhaust duct) between zero and 0.3 inch water column.
Where employed, booster fans must not activate the dryer
airflow proving switch (sail switch) when the dryer is not in
operation.
It is suggested that the ductwork from each dryer not exceed
20 feet (6.09 meters) with no more than two elbows
(excluding dryer connections). If the ductwork exceeds 20
feet (6.09 meters) or has numerous elbows, the cross-
sectional area of the ductwork must be increased in
proportion to the length and number of elbows in it. In
calculating duct size, the cross-sectional area of a square
or rectangular duct must be increased twenty percent for
each additional 20 feet (6.09 meters). The diameter of a
round exhaust duct should be increased ten percent for each
additional 15 feet (4.57 meters). Each 90° elbow is
equivalent to an additional 40 feet (12.19 meters), and each
45° elbow is equivalent to an additional 20 feet (6.09 meters).

12 JLA Limited 113375-16
NUMBER OF DRYERS 4 3 2 1
MINIMUM CROSS-
SECTIONAL AREA
SQ IN 615 455 315 200
SQ CM 3967 2935 2032 1290
MINIMUM ROUND
DUCT DIAMETER
IN 28 24 20 16
CM 71 61 50 40
Electrical Information _______________
Electrical Requirements
It is your responsibility to have all electrical connections
made by a properly licensed and competent electrician to
assure that the electrical installation is adequate and
conforms to local and state regulations or codes. In the
absence of such codes, all electrical connections, material,
and workmanship must conform to the applicable
requirements of the National Electrical Code ANSI/NFPA
NO. 70-LATEST EDITION or in Canada, the Canadian
Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or
CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION.
IMPORTANT: Failure to comply with these codes or
ordinances, and/or the requirements stipulated in this
manual can result in personal injury or component failure.
NOTE:
Component failure due to improper installation will
void the warranty.
Each dryer should be connected to an independently
protected branch circuit. The dryer must be connected with
copper wire only. Do not use aluminum wire, which could
cause a fire hazard. The copper conductor wire/cable must
be of proper ampacity and insulation in accordance with
electric codes for making all service connections.
NOTE: The use of aluminum wire will void the warranty.
Wiring diagrams are affixed to the inside at the top front
control door and the rear upper back guard/panel.
Electrical Service Specifications
Gas and Steam Models Only
NOTE 1 Opening must be 2-inches (5.08 cm) larger than the duct (all the
way around). The duct must be centered within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest
obstruction.
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 duct.
IMPORTANT: For extended ductwork runs, the cross
section area of the ductwork can only be increased to an
extent. Maximum proportional ductwork runs cannot
exceed 20 feet (6.09 meters) more than the original
limitations of 20 feet (6.09 meters) with two elbows.
When the ductwork approaches the maximum limits as
noted in this manual, a professional HVAC firm should be
consulted for proper venting information.
Exhaust back pressure measured by a manometer/
magnehelic in the exhaust duct must be no less than 0
and must not exceed 0.3 in WC (0.74 mb).
NOTE: It is recommended that exhaust or booster fans
not be used in the exhaust ductwork system except where
necessary to maintain exhaust back pressure (in the
exhaust duct) between zero and 0.3 inch water column.
Where employed, booster fans must not activate the dryer
airflow proving switch (sail switch) when the dryer is not in
operation.
The ductwork 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 ductwork
joints must be taped to prevent moisture and lint from
escaping into the building. Inspection doors should be
installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning of lint from the ductwork.
Multiple Dryer Venting 16-Inch (40.64 cm)
Diameter Minimum Exhaust Connections at Common Duct
A = 48-3/4” (123.82 cm)
B = 20 feet (6.09 meters)
* 3-Wire is available. 3/26/15
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)
IMPORTANT:
NOTES: A.
B.
C.
208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering,
specify exact voltage.
When fuses are used they must be dual element, time delay, current
limiting, class RK1 or RK5 ONLY. Calculate/determine correct fuse
value, by applying either local and/or National Electrical Codes to
listed appliance amp draw data.
Circuit breakers are thermal-magnetic (industrial) motor curve type
ONLY. For others, calculate/verify correct breaker size according to
appliance amp draw rating and type of breaker used.
Circuit breakers for 3-phase (3ø) dryers must be 3-pole type.
SERVICE
VOLTAGE PHASE WIRE SERVICE
APPROX.
AMP DRAW CIRCUIT
BREAKER
60 Hz 50 Hz
208 3ø 3 14 — 20
220 3ø 3 — 11 15
230 3ø 3 13 — 15
240 3ø 3 12 11 15
380 3ø 4*—6 15
400 3ø 4*—6 15
416 3ø 4*—6 15
440 3ø 3 7 — 15
460 3ø 3 7 — 15
480 3ø 3 7 — 15

113375-16 Telephone [phone]
* 3-Wire is available. 3/26/15
IMPORTANT: The dryer must be connected to the electric
supply shown on the data label. In the case of 208 VAC
or 230/240 VAC, the supply voltage must match the
electric service specifications of the data label exactly.
!WARNING
208 VAC and 230/240 VAC are not the same. Any
damage done to dryer components due to improper
voltage connections will automatically void the
warranty.
NOTE: The manufacturer reserves the right to make
changes in specifications at any time without notice or
obligation.
Electrical Connections
NOTE: A wire diagram is included with each dryer and is
affixed to the back side of the top control (access) door.
Electric Models Only
All electrically heated dryers must be connected to the
electric service shown on the dryer’s data label. The
connecting wires must be properly sized to handle the rated
current.
The only electrical input connections to the dryer are the
3-phase (3ø) power leads (L1, L2, and L3), ground, and in
the case of 4 wire service, the neutral. These electrical
connections are made at the terminal block located in the
service/relay box at the rear, upper left hand corner of the
dryer. To gain access into this service box, the service cover
must be removed.
The “line power” and the “ground” connections to the dryer
must be made through the knockout hole at the top of the
electric service/relay box. A strain relief must be used where
the line power ground wires go into the electric service/relay
box.
Providing local codes permit, power connections to the dryer
can be made by use of a flexible UL listed power cord/pigtail
(wire must conform to ratings of the dryer), or the dryer can
be hard wired directly to the service breaker. In all cases, a
strain relief must be used where the wire(s) enter the dryer
electrical service (relay) box.
NOTE: A circuit servicing each dryer must be provided.
Grounding
A ground (earth) connection must be provided and installed
in accordance with state and local codes. In the absence of
these codes, grounding must conform to applicable
requirements of the National Electrical CodeANSI/NFPA NO.
70-LATEST EDITION, or in Canada, the installation must
conform to applicable Canada Standards: Canadian
Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST
EDITION. The ground connection may be to a proven earth
ground at the location service panel.
NOTE: A grounding connection (terminal lug) is provided
in the dryer’s electrical service/relay box at the rear, upper
left hand corner of the dryer.
For added personal safety, when possible, it is suggested
that a separate ground wire (sized per local codes) be
connected from the ground connection of the dryer to a
grounded cold water pipe. Do not ground to a gas pipe or
hot water pipe. The grounded cold water pipe must have
metal-to-metal connection all the way to the electrical ground.
If there are any nonmetallic interruptions, such as a meter,
pump, plastic, rubber, or other insulating connectors, they
must be jumped out with no. 4 copper wire and securely
clamped to bare metal at both ends.
IMPORTANT: For personal safety and proper operation,
the dryer must be grounded. For proper operation of the
microprocessor controller (computer), an earth (zero)
ground is required.
NOTE:
Grounding via metallic electrical conduit (pipe) is
not recommended.
Gas Information ______________________
It is your responsibility to have all plumbing connections
made by a qualified professional to assure that the gas
plumbing installation is adequate and conforms to local and
state regulations or codes. In the absence of such codes,
all plumbing connections, materials, and workmanship must
conform to the applicable requirements of the National Fuel
Gas Code ANSI Z223.1-LATEST EDITION, or in Canada,
the Canadian Installation Codes CAN/CGA-B149.1-M91
(Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or
LATEST EDITION.
ELECTRICAL SERVICE SPECIFICATIONS
IMPORTANT:
NOTES: A.
B.
C.
208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering,
specify exact voltage.
When fuses are used they must be dual element, time delay, current
limiting, class RK1 or RK5 ONLY. Calculate/determine correct fuse
value, by applying either local and/or National Electrical Codes to listed
appliance amp draw data.
Circuit breakers are thermal-magnetic (industrial) type ONLY. For
others, calculate/verify correct breaker size according to appliance amp
draw rating and type of breaker used.
Circuit breakers for 3-phase (3ø) dryers must be 3-pole type.
SERVICE
VOLTAGE PHASE WIRE SERVICE OVEN kW
APPROX.
AMP DRAW CIRCUIT
BREAKER
60 Hz 50 Hz
208 3ø 3 72 214 —300
230 3ø 3 66 178 —250
380 3ø 3 72 115 —150
440 3ø 3 60 86 87 125
460 3ø 3 66 90 —125
480 3ø 3 72 94 —125
600 3ø 3 72 76 —100
380 3ø 4*60.5 —98 125
380 3ø 4*72 —116 150
400 3ø 4*66 —102 150
416 3ø 4*72 —106 150

14 JLA Limited 113375-16
TYPE OF GAS
Btu/hr
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.* Part No. Qty. D.M.S.* Part No.
375,000 94,498 3 #4 140832 3 #31 140818
Liquid Propane Conversion Kit Part Number 883118
IMPORTANT: Failure to comply with these codes or
ordinances, and/or the requirements stipulated in this
manual, can result in personal injury and improper
operation of the dryer.
The dryer and its individual shutoff valves must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of
1/2 psig (3.5 kPa). The dryer must be isolated from the gas
supply piping system by closing its individual manual shutoff
valve during any pressure test of the gas supply system at
test pressures equal to or less than 1/2 psig (3.5 kPa).
IMPORTANT: Failure to isolate or disconnect dryer from
supply as noted can cause irreparable damage to the gas
valve, which will void the warranty.
!WARNING
Fire or explosion could result.
Gas Supply
The gas dryer installation must meet the American National
Standard … National Fuel Gas Code ANSI Z223.1-LATEST
EDITION, or in Canada, the Canadian Installation Codes
CAN/CGA-B149.1 M91 (Natural Gas) or CAN/CGA-B149.2-
M91 (L.P. Gas) or LATEST EDITION, as well as local codes
and ordinances and must be done by a qualified professional.
NOTE: Undersized gas piping will result in ignition
problems, slow drying, increased use of energy, and can
create a safety hazard.
The dryer must be connected to the type of heat/gas
indicated on the dryer data label. If this information does
not agree with the type of gas available, do not operate the
dryer. Contact the distributor who sold the dryer or contact
the factory.
IMPORTANT: Any burner changes or conversions must
be made by a qualified professional.
The input ratings shown on the dryer data label are for
elevations up to 2,000 feet (609.6 meters), unless elevation
requirements of over 2,000 feet (609.6 meters) were
specified at the time the dryer order was placed with the
factory. The adjustment or conversion of dryers in the field
for elevations over 2,000 feet (609.6 meters) is made by
changing each burner orifice. If this conversion is necessary,
contact the distributor who sold the dryer or contact the
factory.
IMPORTANT: This gas dryer is not provided with an
internal gas supply shutoff and an external gas supply
shutoff must be provided.
Technical Data
Gas Specifications
Gas Connections
Inlet connection ........................ 1” F.B.S.P.T.
Inlet supply size ........................ 1-1/4” N.P.T. (minimum)
Btu/hr input ............................... 375,000 (94,498 kcal/hr)
Natural Gas
Regulation is controlled by the dryer’s gas valve’s internal
regulator. Incoming supply pressure must be consistent
between a minimum of 6.0 inches (14.92 mb) and a
maximum of 12.0 in WC (29.9 mb) pressure.
L.P. Gas
Dryers made for use with L.P. gas have the gas valve’s
internal pressure regulator blocked open so that the gas
pressure must be regulated upstream of the dryer. The
pressure measured at each gas valve pressure tap must be
a consistent 10.5 in WC (26.1 mb). There is no regulator or
regulation provided in an L.P. dryer. The water column
pressure must be regulated at the source (L.P. tank) or an
external regulator must be added to each dryer.
Shaded area is stated in metric equivalent
* D.M.S. equivalents are as follows:
Natural Gas..................... #4 = 0.2090” (5.3086 mm).
L.P. Gas .......................... #31 = 0.1200” (3.048 mm).
Piping / Connections
All components/materials must conform to National Fuel Gas
Code Specifications ANSI Z223.1-LATEST EDITION, or in
Canada, 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), as well as local codes and
ordinances and must be done by a qualified professional. It
is important that gas pressure regulators meet applicable
pressure requirements, and that gas meters be rated for
the total amount of all the appliance Btu being supplied.
The dryer is provided with a 1” F.B.S.P.T. inlet pipe
connection extending out the back area of the burner box.
The minimum pipe size (supply line) to the dryer is 1-1/4”
N.P.T. For ease in servicing, the gas supply line of each
dryer must have its own shutoff valve.
The size of the main gas supply line (header) will vary
depending on the distance this line travels from the gas
meter or, in the case of L.P. gas, the supply tank, other gas-
operated appliances on the same line, etc. Specific
information regarding supply line size should be determined
by the gas supplier.
NOTE: Undersized gas supply piping can create a low or
inconsistent pressure, which will result in erratic operation
of the burner ignition system.
Shaded areas are stated in metric equivalents
* Measured at the gas valve pressure tap when the gas valve is on.
Type of Gas
Manifold Pressure*In-Line Pressure
Natural
3.5 in WC 6.0-12.0 in WC
8.7 mb 14.92 - 29.9 mb
Liquid Propane
10.5 in WC 11.0 in WC
26.1 mb 27.4 mb

113375-16 Telephone [phone]
Operating Steam Pressure
Maximum 125 psig* 862 kPa
Heat Input (Normal Load) 13
Bhp
Consumption (Approximate) 450 lb/hr 204 kg/hr
TYPICAL L.P. GAS INSTALLATION
Steam Information ___________________
It is your responsibility to have all plumbing connections
made by a qualified professional to assure that the gas
plumbing installation is adequate and conforms to local and
state regulations or codes.
IMPORTANT: Failure to comply with the requirements
stipulated in this manual can result in component failure,
which will void the warranty.
NOTE:
In standard format this dryer is manufactured with
a pneumatic (piston) damper system, which requires an
external supply of clean, dry, regulated air 80 psi +/- 10
psi (5.51 bar +/- 0.69 bar). This dryer may be provided
with an optional steam solenoid valve in which case, no
pneumatic steam damper system is provided. Refer to
Steam Damper Air System Connections on the following
page.
Steam Coil pH Level
The normal pH level for copper type steam coils must be
maintained between a value of 8.5 to 9.5. For steel type
steam coils the pH level must be maintained between a value
of 9.5 to 10.5. These limits are set to limit the acid attack of
the steam coils.
IMPORTANT: Coil failure due to improper pH level will
void the warranty.
Steam Requirements – High Pressure
Inlet _______ 1-1/4” N.P.T. supply line connections –
qty. two (2) at first (top) and third manifold.
Return _____ 1” N.P.T. return line connections –
qty. two (2) at second and fourth
(bottom) manifold.
Shaded areas are stated in metric equivalents
* The minimum operating pressure for optimum results is 100 psig (689.47
kPa).
Installation Instructions
To ensure an adequate supply of steam is provided, be sure
that the steam supply lines and steam return lines are sized
and laid out as stipulated in this manual. Inadequate steam
supply lines and steam return lines or improper steam
plumbing will result in poor performance and can cause
component failure. Clean, dry steam must be provided to
the dryer.
IMPORTANT: Steam coil failure due to water hammer by
wet steam will void the warranty.
Consistent gas pressure is essential at all gas connections.
It is recommended that a 1-inch (2.54 cm) pipe gas loop be
installed in the supply line servicing a bank of dryers. An in-
line pressure regulator must be installed in the gas supply
line (header) if the (natural) gas pressure exceeds 12.0 in
WC (29.9 mb) pressure.
NOTE: A consistent water column test pressure of 3.5 in
WC (8.7 mb) for natural gas and 10.5 in WC (26.1 mb) for
L.P. dryers is required at the gas valve pressure tap of
each dryer for proper and safe operation.
A 1/8” N.P.T. plugged tap, accessible for a test gauge
connection, must be installed in the main gas supply line
immediately upstream of each dryer.
IMPORTANT: Pipe joint compounds that resist the action
of natural gas and L.P. gas must be used.
Test all connections for leaks by brushing on a soapy
water solution (liquid detergent works well).
The dryer and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig (3.5 kPa).
!WARNING
Never test for leaks with a flame!!!
NOTE: The dryer must be isolated from the gas supply
piping system by closing its individual manual shutoff
valve during any pressure test of the gas supply system at
test pressures equal to or less than 1/2 psig (3.5 kPa).
TYPICAL NATURAL GAS INSTALLATION

16 JLA Limited 113375-16
The presence of condensate in the steam supply line will
cause water hammer and subsequent heat exchanger
(steam coil) failure. The steam supply connection into the
main supply line must be made with a minimum 12-inch
(30.48 cm) riser. This will prevent any condensate from
draining towards the dryer.
The steam supply line to the dryer must include a 12-inch
(30.48 cm) riser along with a drip trap and check valve. This
will prevent any condensate from entering the steam coil.
Flexible hoses or couplings must be used. The dryer vibrates
slightly when it runs and this will cause the steam coil
connections to crack if they are hard piped to the supply
and return mains.
Shutoff valves for each dryer should be installed in the supply
line, return line, and drip trap return line. This will allow the
dryer to be isolated from the supply main and the return
main if the dryer needs maintenance work.
Install an inverted bucket steam trap and check valve at
least 12-inches (30.48 cm) below each steam coil return
manifold as close to the coil as possible. Two traps, each
with a capacity of 600 lb (272 kg) of condensate per hour at
125 psi (8.62 bar), are needed for each unit.
Dryers with optional steam solenoid valve: valve must be
mounted with coil positioned directly above the valve body.
The supply line and the return line should be insulated. This
will save energy and provide for the safety of the operator
and maintenance personnel.
Water pockets in the supply lines, caused by low points, will
provide wet steam to the coil possibly causing steam coil
damage. All horizontal runs of steam supply piping should
be pitched 1/4-inch (6.35 mm) for every 1 foot (0.31 meters)
back towards the steam supply header causing the
condensate in the line to drain to the header. Install a bypass
trap in any low point to eliminate wet steam.
Steam Damper Air System Connections
In standard format, this dryer is manufactured with a
pneumatic (piston) damper system, which requires an
external supply of compressed air. The air connection is
made to the steam damper solenoid valve, which is located
at the rear of the top console.
Air Requirements
Compressed Air Supply Air Pressure
Normal 80 psi 5.51 bar
Minimum Supply 70 psi 4.82 bar
Maximum Supply 90 psi 6.21 bar
Shaded areas are stated in metric equivalents
Air Connection
Air connection to system — 1/4” Quick Connection
No air regulator or filtration is provided with the dryer.
External regulation/filtration of 80 psi (5.51 bar) must be
provided. It is suggested that a regulator/filter gauge
arrangement be added to the compressed air line just before
the dryer connection. This is necessary to ensure that correct
and clean air pressure is achieved.

113375-16 Telephone [phone]
Diagram 1 shows the damper in the heating (open) mode,
allowing heat into the tumbler.
Diagram 2 shows the damper in the cool down (closed)
mode, pulling ambient air directly into the tumbler without
passing through the coils.
NOTE: With the dryer off or with no air supply, the steam
damper is in cool down mode as shown in Diagram 2.
Steam Damper Air Piston (Flow Control)
Operation Adjustment
Although the steam damper operation was tested and
adjusted prior to shipping at 80 psi (5.51 bar), steam damper
operation must be checked before the dryer is put into
operation. Refer to the following page to check steam
damper operation. If steam damper adjustment is necessary,
locate the flow control valve and make the necessary
adjustments as noted below.
Preparation for Operation / Start-Up
The following items should be checked before attempting
to operate the dryer:
• Read all “CAUTION,” “WARNING,” and “DIRECTION”
labels attached to the dryer.
• Check incoming supply voltage to be sure that it is the
same as indicated on the dryer data label. In the case
of 208 VAC or 230/240 VAC, the supply voltage must
match the electric service exactly.
• GAS MODELS – check to assure that the dryer is
connected to the type of heat/gas indicated on the dryer
data label.
• GAS MODELS – the sail switch damper assembly was
installed and pre-adjusted at the factory prior to
shipping. However, each sail switch adjustment must
be checked to assure that this important safety control
is functioning.
• GAS MODELS – be sure that all gas shutoff valves are
in the open position.
• Be sure that all electric box covers have been replaced.
• Check all service doors to assure that they are closed
and secured in place.
• Be sure the lint drawer is securely in place.
NOTE: Lint drawer must be closed to activate the safety
switch otherwise the dryer will not start.
• Rotate the tumbler (drum) by hand to be sure it moves
freely.
• Check bolts, nuts, screws, terminals, and fittings for
security.
• STEAM MODELS – check to ensure air supply (80 psi
[5.51 bar]) is on all dryers equipped with standard
pneumatic steam damper system.
• STEAM MODELS – check to ensure all steam shutoff
valves are open.
• STEAM MODELS with Standard Pneumatic Damper –
check steam damper operation.
• STEAM MODELS with Optional Steam Solenoid Valve –
Check steam solenoid valve connections.
• Check tumbler bearing setscrews to ensure they are all
tight.
Preoperational Test __________________
All dryers are thoroughly tested and inspected before leaving
the factory. However, a preoperational test should be
performed before the dryer is publicly used. It is possible
that adjustments have changed in transit or due to marginal
location (installation) conditions. Installer must instruct the
user on how to correctly operate the dryer before leaving.
Turn on electric power to the dryer.
Make sure the main door is closed and the lint drawer is
securely in place.
Refer to the Operating Instructions for starting your particular
model dryer.
Steam Damper System Operation
The steam damper, as shown in the illustration below
(Diagram 1), allows the coil to stay constantly charged
eliminating repeated expansion and contraction. When the
damper is opened, the air immediately passes through the
already hot coil, providing instant heat to start the drying
process. When the damper is closed, ambient air is drawn
directly into the tumbler, allowing a rapid cool down.

18 JLA Limited 113375-16
Compressed Air Supply Air Pressure
Normal 80 psi 5.51 bar
Minimum Supply 70 psi 4.82 bar
Maximum Supply 90 psi 6.21 bar
Check to ensure that the tumbler starts in the clockwise
direction. Additionally, check the direction of the motorized
impellor to ensure that the motorized impellor rotates in the
clockwise direction as viewed from the front. If it is, the
phasing is correct. If the phasing is incorrect, reverse two
of the leads at L1, L2, or L3 of the power supply connections
made to the dryer.
IMPORTANT: Motorized impellor as viewed from the front
must turn in the clockwise direction, otherwise the dryer
efficiency will be drastically reduced and premature
component failure can result.
Heat Circuit Operational Test
Gas Models
When the dryer is first started (during initial start-up), the
burner has a tendency not to ignite on the first attempt. This
is because the gas supply piping is filled with air, so it may
take a few minutes for this air to be purged from the lines.
The dryer is equipped with a DSI system, which has internal
diagnostics. If ignition is not established after three attempts,
the heat circuit DSI module will LOCKOUT until it is manually
reset. To reset the DSI system, open and close the main
door and restart the dryer (press the “START” key).
NOTE: During the purging period, check to be sure that
all gas shutoff valves are open.
Once ignition is established, a gas pressure test should be
taken at the gas valve pressure tap of each dryer to assure
that the water column pressure is correct and consistent.
NOTE: The water column pressure requirements
(measured at the gas valve pressure tap)…
Natural Gas............. 3.5 in WC (8.7 mb)
L.P. Gas .................. 10.5 in WC (26.1 mb)
IMPORTANT: There is no regulator provided in an L.P.
dryer. The water column pressure must be regulated at
the source (L.P. tank) or an external regulator must be
added to each dryer.
Steam Models
Check to ensure that the (standard) steam damper or
(optional) steam solenoid valve is functioning properly
The steam damper should not “slam” (open or closed) when
it reaches the end of (piston) travel. Additionally, the steam
damper should not bind and/or stop during travel. If either
of these conditions occur, the flow control must be adjusted.
Refer to the bottom illustration on the previous page for air
adjustment instructions.
Make a complete operational check of all safety-related
circuits (i.e., lint drawer switch and sail switch on gas
models).
NOTE: To check for proper sail switch operation, open the
main door and while holding main door switch plunger in,
start the dryer. The dryer should start but the heat circuit
should not be activated (on). If the heat (burner) does
activate, shut the dryer off and make the necessary
adjustments.
Reversing tumbler dryers should never be operated with less
than a 79 lb (35.83 kg) load (dry weight), since the load’s
weight affects tumbler coast time during a direction reversal
command. It is important that the tumbler come to a
complete stop prior to starting in opposite direction.
Microprocessor Controller (Computer)
Dryer Models
Spin and stop times are not adjustable in theAutomatic Mode
and have been preprogrammed into the microprocessor
controller (computer) for 150-seconds spin time in the
forward direction and 120-seconds in the reverse direction
with a 5-second dwell (stop) time.
Spin and stop times are adjustable in the Manual (timed)
Mode.
Tumbler Coating
The tumbler is treated with a protective coating. We suggest
dampening old garments or cloth material with a solution of
water and nonflammable mild detergent and tumbling them
in the tumbler to remove this coating.
Each dryer should be operated through one complete cycle
to assure that no further adjustments are necessary and
that all components are functioning properly.
Make a complete operational check of all operating
controls…
Microprocessor controller (computer)
programs / selections…
Each computer has been preprogrammed by the factory with
the most commonly used parameter (program) selections.
If computer program changes are required, refer to the
computer programming manual, which was shipped with the
dryer.
Compressed Air Requirements _______
The dryer requires an external supply of compressed air
(2.50 cfh at 80 psi [0.07 cmh at 5.51 bar] for gas models
and 3.25 cfh at 80 psi [0.09 cmh at 5.51 bar] for steam
models). For steam models, compressed air is necessary
for the standard air operated steam damper. On both the
steam models as well as the gas models, compressed air is
necessary/required for blower air jet operation to clean lint
from the impellor/fan (squirrel cage).
Air Requirements
Microprocessor Controller (Computer) Dryers…
Shaded areas are stated in metric equivalents
Air Regulation
No air regulation or air filtration is provided with the dryer.
External regulation/filtration of 80 psi (5.51 bar) must be
provided. It is suggested that a filter/regulator/gauge
arrangement be added to the compressed air line just before
the dryer connection. This is necessary to ensure that correct
and clean air pressure is achieved.

113375-16 Telephone [phone]
Air Connection
Air connection to this system is a 1/4” quick connection as per
the illustration below.
Warranty Information ____________
Returning Warranty Cards
Before any dryer leaves the factory test area, a
warranty card is placed on the back side of the main
door glass. These warranty cards are intended to serve
the customer where we record the individual installation
date and warranty information to better serve you,
should you file a warranty claim.
If a warranty card did not come with your dryer, contact
the JLA Warranty Department.
IMPORTANT: A separate warranty card must be
completed and returned for each individual dryer.
NOTE:
Be sure to include the installation date when
returning the warranty card(s).
Warranty
For a copy of the JLA commercial warranty covering
your particular dryer(s), contact the distributor from
whom you purchased the equipment and request a
dryer warranty form. If the distributor cannot be
contacted or is unknown, warranty information can be
obtained from JLA by contacting the JLA Warranty
Department.
NOTE: Whenever contacting the JLA factory for
warranty information, be sure to have the dryer’s
model number and serial number available so that
your inquiry can be handled in an expeditious
manner.
Routine Maintenance _____________
A program and/or schedule should be established for
periodic inspection, cleaning, and removal of lint from
various areas of the dryer, as well as throughout the
ductwork system. The frequency of cleaning can best
be determined from experience at each location.
Maximum operating efficiency is dependent upon
proper air circulation. The accumulation of lint can
restrict this airflow. If the guidelines in this section are
met, a JLA dryer will provide many years of efficient,
trouble free, and most importantly, safe operation.
!WARNING
Lint from most fabrics is highly combustible.
The accumulation of lint can create a potential
fire hazard.
Keep dryer area clear and free from
combustible materials, gasoline, and other
flammable vapors and liquids.
NOTE: Remove power from the dryer before
performing any maintenance in the dryer.
Suggested time intervals shown are for average
usage which is considered six to eight operational
(running) hours per day.
IMPORTANT: The dryer produces combustible lint
and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any
lint build up.
Shutdown Instructions __________________
If the dryer is to be shut down (taken out of service) for a period of
time, the following must be performed:
Discontinue power to the dryer either at the external disconnect
switch or the circuit breaker.
Discontinue the heat supply:
GAS MODELS … discontinue the gas supply.
SHUT OFF external gas supply shutoff valve.
STEAM MODELS … discontinue the steam supply.
SHUT OFF external (location furnished) shutoff valve.
Service / Parts Information ______________
Service
Service must be performed by a qualified trained technician,
service agency, or gas supplier. If service is required, contact
the distributor from whom the JLA equipment was purchased. If
the distributor cannot be contacted or is unknown, contact the
JLA Service Department for a distributor in your area.
NOTE: When contacting the JLA Service Department, be sure
to give them the correct model number and serial number so
that your inquiry is handled in an expeditious manner.
Parts
Replacement parts should be purchased from the distributor from
whom the JLA equipment was purchased. If the distributor cannot
be contacted or is unknown, contact the JLA Parts Department
for a distributor in your area. Parts may also be purchased directly
from the factory by calling the JLA Parts Department at 01422
822282 or you may FAX in your order at 01422 824390.
NOTE: When ordering replacement parts from the distributor or
JLA be sure to give them the correct model number and serial
number so that your parts order can be processed in an
expeditious manner.

20 JLA Limited 113375-16
Adjustments
7 Days After Installation
and Every 6 Months Thereafter
Inspect bolts, nuts, screws, (bearing setscrews), grounding
connections, and nonpermanent gas connections (i.e.,
unions, shutoff valves, and orifices). Motor and drive belts
should be examined. Cracked or seriously frayed belts
should be replaced. Tighten loose V-belts when necessary.
Complete operational check of controls and valves.
Complete operational check of all safety devices (i.e., door
switch, lint drawer switch, sail switch, burner and hi-limit
thermostat).
Lubrication
The drive shaft bearings and idler shaft bearings should be
lubricated every 3 months. Use a #2 grease or its equivalent.
Lubrication is necessary.
The motor bearings and under normal/most conditions the
tumbler bearing are permanently lubricated. It is physically
possible to relubricate the tumbler bearing if you choose to
do so even though this practice may not be necessary. Use
Industrial Chevron ball or roller bearing SRI grease NLGI2
or its equivalent, which has a broad operating temperature
range of -22° F (-30° C) to 350° F (177° C).
Manual Reset
Burner Hi-Limit Instructions __________
Phase 7
This dryer was manufactured with a manual reset burner
hi-limit thermostat, which is monitored by the Phase 7
computer. If the burner hi-limit is open prior to the start of
the drying cycle, the dryer will start momentarily and then
shut down, the Phase 7 computer will display “BURNER
HIGH LIMIT FAULT” with an audio indication.
If the burner hi-limit opens during a drying cycle, the Phase
7 computer will also display the same error code described
above, along with an audio indication. If the drum
temperature is above 100° F (38° C), the dryer will continue
to run with no heat for 3 minutes or until the drum temperature
has dropped below 100° F (38° C). The CLEAR/STOP button
on the Phase 7 keypad must be pressed to clear the error
condition. The open burner hi-limit must be reset “manually”
prior to the start of the next cycle.
Dual Timer
This dryer was manufactured with a manual reset burner
hi-limit thermostat. If the burner hi-limit is open prior to the
start of the drying cycle, or during the cycle, the dryer will
not recognize the open state of the burner hi-limit and will
start or continue through the drying cycle with no heat.
Manual reset hi-limit must be reset manually.
This hi-temperature condition may be caused due to a
restricted exhaust, poor airflow, or improper burner operation.
The location of the burner hi-limit is on the left side of the
burner box, looking at the burner from the back of the dryer.
!WARNING
Discontinue power to dryer before attempting to
reset hi-limit.
Clean lint from lint drawer/screen every third or fourth load.
NOTE: The frequency of cleaning the lint screens can best
be determined from experience at each location.
Weekly
Clean lint accumulation from the lint chamber, thermostat, and
microprocessor temperature sensor (sensor bracket) area.
!WARNING
To avoid hazard of electrical shock, discontinue
electrical power supply to the dryer.
Steam Dryers
Clean the steam coil fins. Compressed air and a vacuum
cleaner with brush attachment are suggested.
NOTE: When cleaning steam coil fins, be careful not to
bend the fins. If fins are bent, straighten by using a fin
comb, which is available from local air-conditioning supply
houses.
90 Days
Remove lint from around tumbler, drive motors, and
surrounding areas. Remove lint from the gas valve burner
area with a dusting brush or vacuum cleaner attachment.
Remove lint accumulation from inside the control box and
at rear area behind the control box.
6 Months
Inspect and remove lint accumulation in customer furnished
exhaust ductwork system and from dryer’s internal exhaust
ducting.
NOTE: The accumulation of lint in the exhaust ductwork
can create a potential fire hazard.
Do not obstruct the flow of combustion and ventilation air.
Check customer furnished back draft dampers in the
exhaust ductwork. Inspect and remove any lint
accumulation, which can cause the damper to bind or
stick.
A back draft damper that is sticking partially closed can
result in slow drying and shut down of the heat circuit
safety switches or thermostats.
If the hi-limit trips due to a high temperature occurrence,
you must disconnect power before resetting. To reset,
press and release the reset button, which is located on
the left side of the burner box, looking at the burner from
the back of the dryer.
When cleaning the dryer cabinet(s), avoid using harsh
abrasives. A product intended for the cleaning of
appliances is recommended.
Check all V-belts for tightness and wear. Retighten, realign,
or replace V-belt if required.
NOTE: Replace in matched sets (both belts).