Dean SM20 GM User manual

Dean, a member of the Commercial Food Equipment Service Association, recommends using
CFESA Certified Technicians.
24-Hour Service Hotline [phone] DECEMBER 2003
PRINTED IN THE USA *8196001*
NON-CE &
Super Marathon Series
Gas Fryers
Installation & Operation Manual
Series SM20, SM35, SM40, SM50,
SM60 & SM80

Please read all sections of this manual and retain for future reference.
NOTICE
This appliance is intended for professional use only and is to be operated by qualified
personnel only. A Dean Factory Authorized Service Center (FASC) or other qualified
professional should perform installation, maintenance, and repairs. Installation, maintenance,
or repairs by unqualified personnel may void the manufacturer’s warranty.
NOTICE
This equipment must be installed in accordance with the appropriate national and local codes of
the country and/or region in which the appliance is installed. See NATIONAL CODE
REQUIREMENTS in Chapter 3 of this manual for specifics.
NOTICE
Drawings and photos used in this manual are intended to illustrate operational, cleaning and
technical procedures and may not conform to onsite management operational procedures.
NOTICE
IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART FOR THIS ENODIS
EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED
DIRECTLY FROM FRYMASTER/DEAN, OR ANY OF ITS AUTHORIZED SERVICE CENTERS,
AND/OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL CONFIGURATION, THIS
WARRANTY WILL BE VOID. FURTHER, FRYMASTER/DEAN AND ITS AFFILIATES WILL NOT BE
LIABLE FOR ANY CLAIMS, DAMAGES OR EXPENSES INCURRED BY THE CUSTOMER WHICH
ARISE DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, DUE TO THE INSTALLATION OF
ANY MODIFIED PART AND/OR PART RECEIVED FROM AN UNAUTHORIZED SERVICE CENTER.
DANGER
Improper installation, adjustment, maintenance or service, and unauthorized alterations or
modifications can cause property damage, injury, or death. Read the installation, operating and
service instructions thoroughly before installing or servicing this equipment. Only qualified
service personnel may convert this appliance to use a gas other than that for which it was
originally configured.
DANGER
Adequate means must be provided to limit the movement of this appliance without depending
upon the gas line connection. Single fryers equipped with legs must be stabilized by installing
anchor straps. All fryers equipped with casters must be stabilized by installing restraining
chains. If a flexible gas line is used, an additional restraining cable must be connected at all
times when the fryer is in use.

DANGER
The front ledge of the fryer is not a step. Do not stand on the fryer. Serious injury can result
from slips or contact with the hot oil.
DANGER
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other cooking appliance.
DANGER
Instructions explaining procedures to be followed MUST be posted in a prominent location in
the event the operator detects a gas leak. This information can be obtained from the local gas
company or gas supplier.
DANGER
The crumb tray in fryers equipped with a filter system must be emptied into a fireproof container
at the end of frying operations each day. Some food particles can spontaneously combust if left
soaking in certain shortening material. Additional information can be obtained in the filtration
manual included with the system.
WARNING
No structural material on the fryer should be altered or removed to accommodate placement of
the fryer under a hood. Questions? Call the Dean Service Hotline at 1-800-551-8633.
WARNING
Do not bang fry baskets or other utensils on the fryer’s joiner strip. The strip is present to seal
the joint between the frypot. Banging fry baskets on the strip to dislodge shortening will distort
the strip, adversely affecting its fit. It is designed for a tight fit and should only be removed for
cleaning.
IMPORTANT
Safe and satisfactory operation of Dean equipment depends upon its proper installation.
Installation MUST conform with local codes, or in the absence of local codes, to European
Union (CE) Standards.

Super Marathon Series Gas Fryers
Installation & Operation Manual
TABLE OF CONTENTS
Page #
1. INTRODUCTION 1-1
1.1 Applicability and Validity 1-1
1.2 Ordering Parts 1-1
1.3 Service Information 1-1
1.4 Safety Information 1-2
1.5 Service Personnel 1-2
2. IMPORTANT INFORMATION 2-1
2.1 Receiving and Unpacking Equipment 2-1
2.2 General 2-1
2.3 Principles of Operation 2-2
2.4 Rating Plate 2-2
2.5 Pre-Installation 2-3
2.6 Equipment Installed at High Altitudes 2-4
2.7 Air Supply and Ventilation 2-5
2.8 Conversion of Units 2-6
3. INSTALLATION INSTRUCTIONS 3-1
3.1 Installing the Fryer 3-1
3.2 Leg and Caster Installation 3-1
3.3 Leveling the Fryer 3-2
3.4 Gas Connections 3-4
3.5 Adjustments/Adaptation to Different Gases 3-9
3.6 Gas Inputs 3-10
3.7 Gas Conversion Procedures 3-12
3.8 Gas Conversion Components 3-15
3.9 Electrical Connections 3-16

Super Marathon Series Gas Fryers
Installation & Operation Manual
TABLE OF CONTENTS (CONT.)
Page #
4. FRYER OPERATIONS 4-1
4.1 Initial Start-up 4-1
4.2 Boil-Out Procedure 4-4
4.3 Final Preparation 4-6
5. PREVENTATIVE MAINTENANCE 5-1
5.1 General 5-1
6. TROUBLESHOOTING 6-1
6.1 General 6-1
6.2 Pilot Burner Malfunction 6-1
6.3 Main Burner Malfunctions 6-2
6.4 Wiring Diagrams 6-3
6.5 Recommended Spare Parts 6-4

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 1: INTRODUCTION
1-1
1.1 Applicability and Validity
Dean Super Marathon Series gas model family has been approved by the European Union
(EU) for sale and installation in all EU countries.
This manual is applicable to and valid for all Dean Super Marathon Series gas units sold in
English-speaking countries, including those in the European Union. Where conflicts exist
between instructions and information in this manual and local or national codes of the country
in which the equipment is installed, installation and operation shall comply with those codes.
This appliance is only for professional use and shall be used by qualified personnel as defined
in Section 1.5.
1.2 Ordering Parts
Customers may order parts directly from their local Authorized Parts Distributor. For this address
and phone number, contact your maintenance and repair center or call the factory. The factory
address and phone numbers are on the back cover of this manual.
To speed up your order, the following information is required:
Model Number Type
Serial Number
Optional Equipment
Item Part Number Quantity Needed
1.3 Service Information
Call the 1-800-551-8633 or [phone] Service Hotline number for the location of your nearest
maintenance and repair center. Always give the model and serial numbers of your fryer.
To assist you more efficiently, the following information will be needed:
Model Number Type
Serial Number
Optional Equipment
Nature of Problem
Additional information (i.e. cooking environment, time of day, and other pertinent
information) may be helpful in solving your service problem.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 1: INTRODUCTION
1-2
1.4 Safety Information
Before attempting to operate your unit, read the instructions in this manual thoroughly.
Throughout this manual, you will find notations enclosed in double-bordered boxes similar to the
ones below.
CAUTION
CAUTION boxes contain information about actions or conditions that may cause or result in a
malfunction of your system.
WARNING
WARNING boxes contain information about actions or conditions that may cause or result in
damage to your system, and which may cause your system to malfunction.
DANGER
DANGER boxes contain information about actions or conditions that may cause or result in injury
to personnel, and which may cause damage to your system and/or cause your system to malfunction.
1.5 Service Personnel
1.5.1 Definitions
A. Qualified and/or Authorized Operating Personnel
1. Qualified/authorized operating personnel are those who have carefully read the information
in this manual and have familiarized themselves with the equipment functions, or have had
previous experience with the operation of equipment covered in this manual.
B. Qualified Installation Personnel
1. Qualified installation personnel are individuals, or firms, corporations, or companies, which,
either in person or through a representative are engaged in and are responsible for the
installation of gas-fired appliances. Qualified personnel must be experienced in such work,
be familiar with all gas precautions involved, and have complied with all requirements of
applicable national and local codes.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 1: INTRODUCTION
1-3
1.5.1 Definitions (cont.)
C. Qualified Service Personnel
1. Qualified service personnel are those who are familiar with Dean equipment and have been
authorized by Dean to perform service on Dean equipment. All authorized service
personnel are required to be equipped with a complete set of service parts manuals and stock
a minimum amount of parts for Dean equipment. A list of Dean Factory Authorized Service
Centers (FASCs) was included with the fryer when shipped from the factory. Failure to use
qualified service personnel will void the Dean warranty on your equipment.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-1
2.1 Receiving and Unpacking Equipment
A. Check that the container is upright. Use an outward prying motion - no hammering - to
remove the carton. Unpack the fryer carefully and remove all accessories from the carton.
Do not discard or misplace these, as they will be needed.
B. After unpacking, immediately check the equipment for visible signs of shipping damage. If
damage has occurred, contact the carrier and file the appropriate freight claims. Do not
contact the factory. Shipping damage responsibility is between the carrier and the dealer.
If your equipment arrives damaged:
1. File claim for damages immediately, regardless of extent of damage.
2. Visible loss or damage: Be sure this is noted on the freight bill or express receipt and is
signed by the person making the delivery.
3. Concealed loss or damage: If damage is unnoticed until equipment is unpacked, notify
freight company or carrier immediately, and file a concealed damage claim. This should
be done within 15 days of date of delivery. Be sure to retain container and all packing
materials for inspection.
NOTE: Dean Does Not Assume Responsibility for Damage or Loss Incurred in Transit.
C. Remove all plastic skin from sides, front, and doors of the fryer(s). Failure to do this prior to
initial fryer operation will make it very difficult to remove later.
2.2 General
Qualified, licensed, and/or authorized installation or service personnel only (as defined in
Section 1.5) should perform the following:
• Installation and service on Dean equipment.
• Conversion of this appliance from one gas type to another.
Failure to use qualified, licensed, and/or authorized installation or service personnel to install,
convert to another gas type or otherwise service this equipment will void the Dean warranty
and may result in damage to the equipment or injury to personnel.
Where conflicts exist between instructions and information in this manual and local code or
national codes, or regulations, installation and operation shall comply with the codes or
regulations in force in the country in which the equipment is installed.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-2
2.2 General (cont.)
Dean Super Marathon Series gas fryers are energy efficient, open frypot, gas-fired units. All units
are shipped completely assembled, with accessories packed inside the frypot. All units are adjusted,
tested, and inspected at the factory prior to crating for shipment.
WARNING
The on-site supervisor is responsible for ensuring that operators are made aware of
the inherent dangers of operating a hot-oil fryer/filter system, particularly the
aspects of fryer operation, oil filtration, and draining/cleaning procedures.
2.3 Principles of Operation
The incoming gas flows through orifices and is mixed with air in the burners to create the correct
ratio for proper combustion. The mixture is ignited at the front end of each heat tube by the pilot
light. Internal diffusers slow the flame as it goes through the burner tube. This slower and more
turbulent flame gives much better heat transfer to the walls of the tubes, thereby heating the oil more
efficiently.
2.4 Rating Plate
DANGER
Fryers MUST be connected ONLY to the gas type identified on the attached rating
plate.
The rating plate can be found on the inside panel of the fryer door. Information on this plate
includes the model and serial numbers, kW/hr (BTU/hr) of the burners, outlet gas pressure in mbars
(inches W.C.), and configuration: natural or propane gas. Rating plate data is essential for proper
unit identification, communicating with the factory or requesting special parts and/or information.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-3
2.5 Pre-Installation
DANGER
No structural material on the fryer should be altered or removed to accommodate
placement of the fryer under a hood. Questions? Call the Frymaster/Dean Service
Hotline at 1-800-551-8633.
DANGER
Do not connect this appliance to the gas supply before reviewing all information in
this chapter.
A. General: Only licensed personnel should install any gas-fired equipment.
1. A manual gas shut-off valve must be installed in the gas supply line ahead of the fryers for
safety and ease of future service.
2. Dean Super Marathon Series gas fryers operate on millivolts, and do not require an external
electric power supply (unless equipped with a built-in filtration system).
B. Clearances: The fryer area must be kept free and clear of all combustibles. This unit is design-
certified for the following installations:
1. Commercial installation only (not for household use).
2. Non-combustible floor installation equipped with factory-supplied 6-inch (15-cm) adjustable
legs or 5-inch (13-cm) casters;
3. Combustible construction with a minimum clearance of 6-inches (15-cm) side and 6-inches
(15-cm) rear, and equipped with factory-supplied 6-inch (15-cm) adjustable legs or 5-inch
(13-cm) casters.
DANGER
Local building codes prohibit a fryer with its open tank of hot oil from being installed
beside an open flame of any type, including those of broilers and ranges.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-4
2.5 Pre-Installation (cont.)
C. Installation Standards
1. CE/EXPORT STANDARDS: Fryer installation must conform with local codes, or in the
absence of local codes, to the appropriate national or European Community (CE) standards.
2. NON-CE INSTALLATION STANDARDS: Fryer installation must conform with local
codes, or in the absence of local codes, to the appropriate national standards as listed below:
a. U.S. installations must meet: b. Canadian installations must meet:
American National Standard Institute CAN 1-B149 Installation Codes
ANSI Z83.11 Canadian Gas Association
American Gas Association 55 Scarsdale Road
8501 E. Pleasant Valley Road Don Mills, ONT, M3B 2R3
Cleveland, OH 44131
National Electrical Code Canadian Electric Code c22.1, part 1
ANSI/NFPA #70 Canadian Standards Association
American National Standard Institute 178 Rexdale Blvd.
1430 Broadway Rexdale, ONT, M9W 1R3
New York, NY 10018
NFPA Standards #96 and #211
National Fire Protection Association
470 Atlantic Avenue
Boston, MA 02110
2.6 Equipment Installed at High Altitudes
1. The fryer input rating [BTU/hr (kW/hr)] is for elevations up to 2,000 feet (610-m). For
elevations above 2,000 feet (610-m), the rating should be reduced 4-percent for each additional
1,000 feet (305-m) above sea level.
2. The correct orifices are installed at the factory if the operating altitude is known at the time of the
customer’s order.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-5
2.7 Air Supply and Ventilation
DANGER
This appliance must be installed with sufficient ventilation to prevent the occurrence
of unacceptable concentrations of substances harmful to the health of personnel in
the room in which it is installed.
Keep the area around the fryer clear to prevent obstruction of combustion and ventilation airflow.
1. Do not connect this fryer to an exhaust duct.
2. Correct installation and adjustment will ensure adequate airflow to the fryer system.
3. A commercial, heavy-duty fryer must vent its combustion wastes to the outside of the building.
A deep-fat fryer must be installed under a powered exhaust hood, or an exhaust fan must be
provided in the wall above the unit, as exhaust gas temperatures are approximately 800-1000°F
(427-538°C). Check air movement during installation. Strong exhaust fans in the exhaust hood
or in the overall air conditioning system can produce slight air drafts in the room.
4. Do not place the fryer’s flue outlet directly into the plenum of the hood, as it will affect the gas
combustion of the fryer.
5. Never use the interior of the fryer cabinet for storage or store items on shelving over or behind
the fryer. Exhaust temperatures can exceed 800°F (427ºC) and may damage or melt items stored
in or near the fryer.
6. Adequate distance must be maintained from the flue outlet of the fryer(s) to the lower edge of the
filter bank. Per NFPA Standards No. 96, a minimum of 18-inches (45-cm) should be maintained
between the flue(s) and the lower edge of the exhaust hood filter.
7. Filters and drip troughs should be part of any industrial hood, but consult local codes before
constructing and installing any hood. The duct system, the exhaust hood and the filter bank must
be cleaned on a regular basis and kept free of grease.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 2: IMPORTANT INFORMATION
2-6
2.8 Conversion of Units
Pressure:
1 mbar = 10,2 mm W.C. = 0,4-inch W.C.
20 mbar = 204 mm W.C. = 8-inch W.C.
1-inch W.C. = 25,4 mm W.C. = 2,5 mbar
Heat Input:
1 kW = 3410 BTU/hr
100 BTU/hr = 0,0293 kW
Temperature:
0° Celsius = 32° Fahrenheit
Temperature in degrees Celsius = (Temperature in degrees Fahrenheit (F) – 32) x 0,555
100° Celsius = (212° Fahrenheit – 32) x 0,555

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-1
3.1 Installing the Fryer
A. Initial Installation: If installed with legs, do not push against the fryer’s side to adjust its
position. Use a pallet or lift jack to lift the fryer slightly and place it where it is to be installed.
B. Relocating the Fryer: If relocating a fryer installed with legs, remove all weight from each leg
before moving.
Note: If a leg becomes damaged during movement, contact your service agent for immediate
repair/replacement.
CAUTION
Fryers must be at room temperature, empty of oil, and if fitted with legs, lifted during
movement to avoid damage and possible bodily injury.
DANGER
Hot shortening can cause severe burns. Avoid contact. Under all circumstances, oil must
be removed from the fryer before attempting to move it to avoid oil spills, and the falls and
severe burns that could occur. This fryer may tip and cause personal injury if not secured in
a stationary position.
3.2 Leg and Caster Installation
WARNING
Dean fryers equipped with legs are for permanent installations. Fryers fitted with legs must
be lifted during movement to avoid damage and possible bodily injury. For a moveable or
portable installation, Dean optional equipment casters must be used.
Questions? Call 1-800-551-8633.
CAUTION
Fryers may not function properly if curb mounted. Do not curb mount Super Marathon gas
fryers.
A. General
1. Install legs and rear rigid casters near where the fryer is to be used, as neither is secure for
long transit. Unit cannot be curb mounted and must be equipped with the legs and casters
provided.
2. When positioning the fryer, gently lower the fryer into position to prevent undue strain to
the legs and internal mounting hardware. Use a pallet or lift jack to lift and position the
fryer if possible. Tilting the fryer may damage the legs.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-2
3.2 Leg and Caster Installation (cont.)
3. Rigid casters must be installed on the fryer rear-channel assembly only.
4. Proceed to Step 3.3, Leveling the Fryer, after legs and rear rigid casters are installed to
ensure the fryer is level before using.
B. Leg and Rigid Caster Installation
1. Remove unit from pallet.
2. Carefully raise unit with forklift, pallet jack, or other steady means.
3. Place one lock washer on each hex head screw.
4. Insert hex head screws with lock washers [1/4-20 threads by ¾" (19 mm) long] through bolt
holes of leg mounting plates and mount to the front channel. Mount rigid casters to the rear
channel following the same procedure. A locknut has been attached to the topside of the
base mounting plates at the factory to capture the hex head screw as it is screwed in.
5. Tighten the bolts to 50 inch-lbs. (5.65 Nm) torque.
3.3 Leveling the Fryer
A. Place a carpenter’s level across the top of the fryer and level the unit front to back. If the fryer is
not level from side to side, a platform or other surface adjustment is needed; there is no side-to-
side level adjustment on a fryer equipped with caster/leg combinations. (If a fryer is equipped
with legs only, side-to-side level adjustments can be made. If a fryer is equipped with casters
only, no level adjustments can be made.). If the fryer is not level, the unit may not function
efficiently, the oil may not drain properly for filtering and in a multi-fryer battery, it may not
match adjacent units.
Legs (Only)
1. Adjust leg height with an adjustable or 1-1/16-inch (27 mm) open-end wrench by turning
the hex bullet on the bottom of the leg.
2. The hex bullet is for minor leg height adjustment only. Do not adjust more than 1-inch
(25.4 mm).
3. When leveling the unit, the leg body should be held firmly to keep the leg from bending or
rotating while turning the hex bullet foot to the required height.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-3
3.3 Leveling the Fryer (cont.)
Rigid Casters (Only)
1. Install the rigid casters on the fryer rear channel only. Legs must be installed on the front
channel.
2. There are no level adjustments for the rigid casters.
B. If the floor is uneven or has a decided slope, place the fryer on a smooth, level platform.
C. If the fryer is moved, re-level the fryer following the instructions given in Steps 3.3, A-C.
D. An installed fryer must be restrained to prevent tipping, which could splash hot oil. Restraints
can be straps or chains anchored to an immovable object (wall, floor anchor), or the manner of
installation (installing the fryer in an alcove, battering to other appliances, etc.).
WARNING
For caster retrofit, the unit must be at room temperature and drained of shortening before
installing the casters.
E. Installing Optional Swivel Casters:
1. Install non-locking casters only at the rear of the unit.
2. Locking casters must be installed at the front of the unit. Locking casters allow the fryer to
be "locked" in position for safe operations.
3. Follow the same instructions for leg installations as given above in steps 3.2, B 1-5.
1/4-20 x 3/4 Hex Bolt
1/4-20 Hex Head Locknut
Washer
Leg Support Assembly
Front Channel or
Rear Channel
1/4-20 x 3/4 Hex Bolt
Front Channel
or Rear Channel
Front or Rear Leg with
Mounting Plate
Adjust as needed
Front View Rear Side View
Rear Caster—5" Rigid
Optional Caster-
Rear Only
Front Caster—5" Swivel
w/Brake
Optional Caster-
Front Only
Leg and Caster (Optional) Mounting Installation

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-4
3.3 Leveling the Fryer (cont.)
NOTE: The installation must be inspected after it is complete to ensure it meets the intent of these
instructions. The on-site supervisor and/or operator(s) should be informed that the appliance is
installed with restraints. If restraints are removed to move fryer (cleaning beneath and behind,
relocation, etc.), ensure that they are re-installed when fryer is returned to its permanently installed
position.
DANGER
The fryer MUST be connected to the gas supply specified on the rating and serial number
plate located on the back of the fryer door.
WARNING
If gas odors are detected, the gas supply MUST be shut off at the main shut-off valve. The
local gas company or FASC should be contacted immediately to rectify the problem.
3.4 Gas Connections
CE REQUIREMENTS
Super Marathon Series gas fryers have obtained CE markings for countries and gas categories shown
below:
COUNTRIES CATEGORIES GAS PRESSURE (MBAR)
II2ELL3B/P G20/G25; G30/G31
20
50
GERMANY (DE)
I3P G31 50
AUSTRIA (AT) II2H3B/P G20; G30/G31 20
50
I2E(R)B G20/G25 20/25
BELGIUM (BE) I3+ G30/G31 28-30/37
DENMARK (DK)
FINLAND (FI)
SWEDEN (SE)
II2H3B/P G20; G30/G31
20
30
SPAIN (ES)
GREECE (GR)
ITALY (IT)
IRELAND (IE)
PORTUGAL (PT)
UNITED KINGDOM (GB)
II2H3+ G20; G30/G31
20
28-30/37
SPAIN (ES) II2H3P G20; G31
20
37 AND 50
II2Esi3+ G20/G25; G30/G31
20/25
28-30/37
FRANCE (FR)
II2Esi3P G20/G25; G31
20/25
50
LUXEMBOURG (LU) II2E3B/P G20; G30/G31 20
50
II2L3P G25; G31
25
50
NETHERLANDS (NL)
II2L3B/P G25; G30/G31
25
30

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-5
3.4 Gas Connections (cont.)
NATIONAL CODE REQUIREMENTS: NON-CE
This equipment is to be installed in compliance with the Basic Plumbing Code of the Building
Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation
Manual of the U.S. Food and Drug Administration.
This equipment is manufactured to use the type of gas specified on the rating plate attached to the
door. Connect equipment stamped "NAT" only to natural gas and that stamped "PRO" only to LP
(Propane) gas.
Australia Only: Installation is to be in accordance with the requirements of AS5601/AG601, local
regulatory authority requirements and other statutory regulations.
WARNING
If the incoming gas pressure is in excess of ½" PSI (3.45 kPa/35 mbar), a step-down
regulator will be required.
DANGER
Before connecting new pipe to this appliance, the pipe must be blown out thoroughly to
remove all foreign material. Foreign material in the burner and gas controls will cause
improper and dangerous operation.
NOTICE
Installation shall be made with a gas connector that complies with national and local codes.
Quick disconnect devices, if used, shall likewise comply with national and local codes.
DANGER
The fryer MUST be connected to the gas supply specified on the rating and serial number
plate located on the back of the fryer door.
The gas supply (service) line must be the same size or greater than the fryer inlet line. Super
Marathon Series gas fryers are equipped with a 3/4" (22 mm) male ISO 7.1 inlet. The gas supply
line must be sized to accommodate all gas-fired equipment connected to that gas supply. Consult
local gas companies or suppliers, or your local contractor for minimum supply line requirements.

SUPER MARATHON SERIES GAS FRYERS
CHAPTER 3: INSTALLATION INSTRUCTIONS
3-6
3.4 Gas Connections (cont.)
Supply Line Specifications
The incoming gas supply line should be a minimum of 1½" (40 mm) in diameter.
The gas supply lines must be sized as indicated in the chart below, based on the total number of
fryers connected to the main gas supply.
Recommended Gas Connection Line Sizes
Gas Types Number of Fryers
1 2 to 3 4 or 5 (*)
Natural Gas 3/4" (20 mm) 1" (25 mm) 1-1/4" (32 mm)
Propane Gas 1/2" (15 mm) 3/4" (20 mm) 1" (25 mm)
(*) When exceeding 18 feet (6 meters) for a configuration of four to five fryers, it is necessary to
provide a 1-¼" (32 mm) rigid gas connection. For six or more fryers, contact factory for
connection line specifications.
DANGER
All connections must be sealed with a joint compound suitable for the gas being used and
all connections must be tested with a solution of soapy water before lighting any pilots.
Never use matches, candles, or any other ignition source to check for leaks. If gas odors are
detected, shut off the gas supply to the appliance at the main shut-off valve and immediately
contact the local gas company or an authorized service agency for service.
DANGER
"Dry-firing" your unit will cause damage to the frypot and can cause a fire. Always ensure
that melted shortening, cooking oil or water is in the frypot before firing the unit.
Rigid Connections
Check any installer-supplied intake pipe(s) visually and clean metal particles or other foreign matter
from the threads before installing into a service line. If the intake pipes are not clear of all foreign
matter, the orifices will clog when gas pressure is applied. When using thread compound on gas
piping, use very small amounts and only on male threads. Use a pipe thread compound that is not
affected by the chemical action of LP gases. DO NOT apply thread compound to the first two pipe
threads – doing so will cause clogging of the burner orifices and control valve.
Manual Shut-Off Valve
This gas service supplier-installed valve must be installed in the gas service line ahead of the fryers
in the gas stream and in a position where it can be reached quickly in the event of an emergency.