Vulcan-Hart ABC7E-208 Instruction Manual

INSTALLATION &
OPERATION MANUAL
FORM 47110 (April 2014)
GAS & ELECTRIC
COMBI OVENS
MODELS
ABC7E-208 ML-137716-000BP
ABC7E-240 ML-137716-000BW
ABC7E-480 ML-137716-000CD
ABC7G-NAT ML-137715-NAT
For additional information on Vulcan-Hart or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanequipment.com
VULCAN-HART
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
WWW.VULCANEQUIPMENT.COM
3600 NORTH POINT BLVD.
BALTIMORE, MD 21222

IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UPANDADJUSTMENTS
OF THE EQUIPMENT COVERED BY THIS MANUAL.
POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE EVENT
THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED FROM THE
LOCAL GAS SUPPLIER.
IMPORTANT
IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS
AT MAIN SHUTOFF VALVE AND CONTACT THE LOCAL GAS
COMPANY OR GAS SUPPLIER FOR SERVICE.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.
IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH. READ THE
INSTALLATION,OPERATINGANDMAINTENANCEINSTRUCTIONS
THOROUGHLY BEFORE INSTALLING OR SERVICING THIS
EQUIPMENT.
IN THE EVENT OF A POWER FAILURE, DO NOT ATTEMPT TO
OPERATE THIS DEVICE.
KEEP AREA AROUND OVEN CLEAR OF COMBUSTIBLES. DO
NOT OBSTRUCT COMBUSTION AND VENTILATION OPENINGS
ON THE OVEN.
RETAIN THIS INSTRUCTION MANUAL FOR FUTURE
REFERENCE
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©VULCAN, 2014

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TABLE OF CONTENTS
GENERAL ..............................................................................................................................................................4
INSTALLATION ......................................................................................................................................................4
Unpacking ........................................................................................................................................................4
Installation Codes and Standards....................................................................................................................4
Location ...........................................................................................................................................................5
Door Opening...................................................................................................................................................5
Stacking Kits ....................................................................................................................................................5
Leveling............................................................................................................................................................5
Handling...........................................................................................................................................................5
Water Requirements ........................................................................................................................................5
Water Quality Statement..................................................................................................................................6
Water Conditioning...........................................................................................................................................7
Plumbing Connections .....................................................................................................................................7
Water Supply Connections...............................................................................................................................7
Filter System ....................................................................................................................................................8
Drain Connection .............................................................................................................................................8
Gas Supply Connections .................................................................................................................................8
Testing the Gas Supply System .......................................................................................................................9
Flue Gas Exhaust ............................................................................................................................................9
Electrical Connection .....................................................................................................................................10
Grounding ......................................................................................................................................................10
Vent Hood ......................................................................................................................................................10
Before First Use .............................................................................................................................................10
OPERATION.........................................................................................................................................................11
Controls..........................................................................................................................................................11
Off/On.............................................................................................................................................................12
Temperature...................................................................................................................................................12
Time ...............................................................................................................................................................13
Humidity .........................................................................................................................................................13
Daily Shutdown ..............................................................................................................................................14
Extended Shutdown.......................................................................................................................................14
Oven Drains ...................................................................................................................................................14
STAINLESS STEEL EQUIPMENT CARE AND CLEANING.................................................................................15
CLEANING ...........................................................................................................................................................16
Door Gasket...................................................................................................................................................16
Oven Compartment........................................................................................................................................17
Deliming the Cavity (Electric and Gas Units) .................................................................................................18
MAINTENANCE ...................................................................................................................................................19
Door Locking and Gasket Inspection .............................................................................................................19
Cooling Fans..................................................................................................................................................19
Oven Light Replacement ...............................................................................................................................19
Alarms and Errors ..........................................................................................................................................19
Service and Parts Information........................................................................................................................19

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INSTALLATION, OPERATION AND CARE OF
ABC7 SERIES COMBI
SAVE THESE INSTRUCTIONS
GENERAL
Vulcan combination ovens are designed and assembled in the USAwith quality workmanship and material.
Proper installation, usage and maintenance will result in many years of satisfactory performance. It is
suggested that you thoroughly read this entire manual and carefully follow all of the instructions provided.
TheABC Combi is unique in many ways but most notable is the controls: Temperature, Time, and Humidity.
The most essential, yet consistent control capability for a combi.
INSTALLATION
Before installing, verify that the electrical and/or gas supply agrees with the specifications on the data plate
located on the lower front corner of the right side panel. If the supply and equipment requirements do not
agree, do not proceed with the installation. Contact your dealer or Vulcan-Hart immediately.
UNPACKING
Each oven is inspected before leaving the factory. The transportation company assumes full responsibility
for safe delivery upon acceptance of the shipment. Immediately after delivery, unpack and check for
shipping damage. If the oven is damaged, save the packing material and contact the carrier immediately.
There is a fifteen-day limitation on filing freight damage claims with the freight company. Freight damage
is not covered under warranty.
INSTALLATION CODES AND STANDARDS
In the United States, the Vulcan Combi Oven must be installed in accordance with:
1. State and local codes.
2. National Fuel Gas Code, ANSI-Z223.1 (latest edition). Copies may be obtained from The American
Gas Association, Inc.; 1515 Wilson Blvd.; Arlington, VA 22209.
3. National Electrical Code (ANSI/NFPANo.70, latest edition) available from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269.
4. Vapor Removal from Cooking Equipment, (NFPA-96, latest edition) available from NFPA.
In Canada, the Vulcan Combi Oven must be installed in accordance with:
1. Local codes.
2. CAN/CGA-B149.1 Natural Gas Installation Code (latest edition).
3. CAN/CGA-B149.1 National Fuel Gas Code (latest edition), available from The Canadian Gas
Association; 178 Rexdale Blvd.; Etobicoke, Ontario; Canada M9W 1R3.
4. Canadian Electrical Code (CSA C22.2 No.3, latest edition) available from the Canadian Standards
Association, 5060 Spectrum Way, Mississauga, Ontario, Canada L4W 5N6.

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LOCATION
Allow space for operating the oven. Do not obstruct the ventilation ports above the oven. To provide
ventilation access, allow 1" clearance on the left side of the oven and 3" clearance on the right and 4" at
the rear. A suitable amount of space (18" minimum) should be provided on the right side of the machine
for service. Ensure a level floor is available for operation.
DOOR OPENING
The oven is delivered with the door hinged on the left and cannot be reconfigured.
STACKING KITS
Stacking kits are available to allow ovens to stack, one on top of the other. Assembly Instructions are
included with the kit.
LEVELING
Use a spirit level on a rack in the oven to make sure the oven is level, both front-to-back and side-to-side.
Adjustment of the leveling feet on the bottom of the legs can be made by turning the feet in or out to level
the oven. After the drain is connected, check for level by pouring water onto the floor of the oven cavity.
All water should drain through the drain opening. Adjust leveling if necessary.
HANDLING
Make sure that the lifting device used has a lifting capacity suitable for the weight
to be lifted and that it has been well maintained.
Perform the handling operations using a lifting device that is rated 20% higher than
the weight of the combi.
Do not stand or walk under the unit when lifting or handling it. Failure to observe
these instructions could cause serious injury.
Follow the instructions for lifting the combi included in the stand or stacking kit ordered with the unit.
WATER REQUIREMENTS
As with all steam related products, water filtration and regular filter replacements coupled with routine
deliming are required. Your local Vulcan Service office can recommend a water treatment system to
meet the needs of your local water conditions. Contact your local Vulcan Service representative for water
treatment offerings.

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WATER QUALITY STATEMENT
The fact that a water supply is potable is no guarantee that it is suitable for steam generation. Proper
water quality can improve the taste of the food prepared in the oven, reduce scale build-up or corrosion,
and extend equipment life. Local water conditions vary from one location to another and can change
throughout the year. The recommended water treatment for effective and efficient use of this equipment
will vary depending on the local water conditions. Your water supply must be within the general guidelines
outlined in the chart below at all times during use of this machine or service issues not covered under
warranty may result.
Water hardness should be treated by removing the impurities (water softener with carbon block or de-
chlorinator and/or in-line water treatment). Low water hardness may also require a water treatment system
to reduce potential corrosion. Water treatment has been shown to reduce costs associated with machine
cleaning, reduce deliming and reduce corrosion of metallic surfaces.
Daily washing and rinsing of the cavity is required. In some cases it may be needed more than once a day
to prevent compounding of contaminants deposited inside cavity even with acceptable filtration. Failure
to wash and rinse down the cavity daily could result in damage of the oven cavity and interior parts. A
Reverse Osmosis water treatment system can be installed to eliminate chlorides or other contaminates
from the water if needed.
NOTE: Failure to properly maintain water quality or preventative procedures for water can lead to issues
not covered under warranty.
WATER SUPPLY GENERAL GUIDELINES*
Supply Pressure (dynamic flow) 30-60 psig
Hardness less than 3 grains (17.1 ppm = 1 grain of hardness)
Silica less than 13 ppm
Chloramines** zero
Chlorides** less than 30 ppm***
Total Chlorine**** zero
PH range 7-8
Un-Dissolved Solids less than 5 microns
* Testing of water is always done AFTER water filter or water treatment used. Water quality does change
with usage and should be checked after idle times to see if the condition worsens.
** A carbon block filter system should always be used to remove Chlorine and Chloramine. If a water
softener is used, a carbon block is still required. Check with your local water treatment specialist for proper
sizing and replacement intervals for the carbon block cartridge.
*** If the Chlorides exceed 30 ppm and the oven is used more than 8 hours during the day in steam or
combination mode the cavity will require rinsing every 8 hours. Failure to do so will result in corrosion and
rusting of the oven cavity and interior parts. A Reverse Osmosis water treatment system can be installed
to eliminate chlorides from the water and reduce the hardness. Preventative washing and rinsing may be
needed more than once a day to prevent compounding of contaminants inside cavity.
**** Total Chlorine of 4.0 ppm is the max limit for the building water supply. A carbon block filter must still
be used to remove all Chlorine and Chloramines from the water. Failure to do so will result in corrosion
and rust in the cooking cavity which is not covered under warranty.

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WATER CONDITIONING
It is important to furnish the combi oven with treated water to reduce scale formation. Scale formation will
reduce steam output, cause premature component failure, and shorten equipment life. Most water supplies
contain scale producing minerals such as Calcium and Magnesium. As steam is generated, the minerals
are deposited into the oven cavity.
This may cause several problems:
1. Reduced heat transfer efficiency.
2. Premature heating element failures.
3. Deposits inside the cavity that can lead to deterioration of the cavity and glass.
These problems are common to any manufacturer's steamer regardless of design, but they can all be
minimized by furnishing the combi oven with treated water and/or performing routine deliming and filter
maintenance.
The desired water properties can best be achieved by using a properly maintained water treatment system.
Strainers or filters will not remove minerals from the water.
Steamers that operate over a long period of time without the benefit of a water treatment system develope
a heavy scale build up. These systems should be cleaned before using.
PLUMBING CONNECTIONS
Plumbing connections must comply with applicable sanitary, safety and
plumbing codes.
NOTE: Failure to properly connect the water lines will result in equipment failure that is not covered under
warranty.
WATER SUPPLY CONNECTIONS
There are two water connections for the combi. Treated water connection supplies steam creation and
spray hose water. Untreated water is only used for drain water tempering. Both connections must have
water supplied to them. If only treated water is available then make both connections with treated water.
Do not supply untreated water to treated connection as it will void warranty.
Connect the treated cold water supply line, min of 3/8" ID, to the ¾" garden hose inlet on the rear of the
Combi Oven. Connect the untreated cold water supply line to the ¾" garden hose, also on the rear of
the Combi Oven for drain water tempering. All water that enters into the oven cavity needs to be treated.
Tempering water is allowable to be untreated.
A water filter system is required for the water supply line going to the treated water inlet of your Combi
Oven. Follow the recommendations for use and installation instructions shipped with the water filter. If a
water filter is not installed, the Combi Oven warranty is limited.
NOTE: Failure to properly connect the water lines will result in equipment failure that is not covered under
warranty.

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FILTER SYSTEM
In addition to water conditioning for the control of solids, you must have a carbon block filter installed
and maintained. Carbon block filters remove the chlorine and chloramines disinfectants from the water.
Chlorine/chloramines will erode the oven cavity, rack guides, racks, and internal components, which is not
covered under warranty. Check with your local water treatment specialist for proper sizing and replacement
intervals for the carbon block cartridge.
Water feed lines to the oven must be flushed before final connection. Particles in the water could clog
tubing and components that supply water for steam production and drain cooling. If the water supply is not
free of sediment or cloudy after several minutes of flushing, a sediment filter must be installed before use.
If you have purchased a water filter system from Vulcan-Hart, please follow the instructions provided with
the filter system. At the time of installation you must register your Combi Oven at www.vulcanhart.com/
filterreg or use the reply card supplied with your unit. You will need to register your Combi Oven at each
filter change to insure your standard and extended warranty is maintained.
Filter purchase invoices and maintenance records must be provided with warranty claims.
DRAIN CONNECTION
In order to avoid any back pressure in the oven, do not connect solidly to any drain.
The 1" NPT threaded fitting at the rear of the combi must be extended a minimum of 12" (305 mm) -
maximum of 72" (1829 mm) away from combi base, to an open air gap type drain. Do not reduce the
drain piping throughout its length. Provide a suitable floor sink with a minimum depth of 12" (305 mm).
The floor sink is NOT to be directly under the combi. The drain should slope down away from the combi
¼" for every foot of drain pipe length. The drain pipe should be either iron or copper. DO NOT use PVC
pipe; PVC pipe may lose its rigidity or glue may fail.
In order to avoid any back pressure in the oven, do not connect solidly to any drain connection.
GAS SUPPLY CONNECTIONS
Gas supply connections and any pipe joint compound must be resistant to the
action of propane gases.
A¾" NPT minimum inside diameter gas supply line is required.
If quick disconnect devices are used, make sure it is sized
properly for data plate BTU/hr. rating.
Codes require that a manual gas shutoff valve be installed in
the gas line ahead of the combi oven. The gas line must be capable of delivering gas to the combi oven
without excessive pressure drop at the minimum rate specified on the rating plate.
Inadequate gas supply could result in burner noise and poor burner performance.
The proper sizing and installation of the gas connection is important for the machine to operate within
its design specifications. In some installations, the gas supply may not be sufficient enough to allow all
the gas equipment to operate properly at peak loads; or when other equipment with a high BTU/hr. input
requirement is operating. The connection to the machine becomes even more important in this type of
location. Flexible gas connectors with quick disconnect or swivel fittings (when used) and gas connectors
beyond the length necessary will reduce the BTU/hr. flow capacity to the machine.
NOTE: Do not use corrugated stainless steel tubing for commercial gas equipment supply connections.
MINIMUM RATE
Gas Input 3/4" NPT
Natural 5" - 14" W.C.
Propane 11" - 14" W.C.

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NOTE: Astraight gas connection is the ideal condition for the rated BTU/hr. flow capacity of the connector.
If a straight connection is not possible and a flexible gas connector is used, do not twist, kink or excessively
flex the connector beyond a U-shape. Flexing the gas connector as described will restrict gas flow or may
damage the connector.
Changing a flexible gas connector may raise the BTU/hr. flow capacity enough to allow the machine to
operate within its design specifications. (i.e. Removing the quick disconnect fitting, installing a shorter gas
connector or installing a larger diameter gas connector.)
An alternative may be to move the equipment to a different gas supply location in the kitchen. (i.e. Closer
to the main supply into the kitchen or away from other equipment with high BTU/hr. input requirements.)
The combi oven is equipped with a factory preset pressure regulator. Natural gas pressure regulators are
preset for 5.0" W.C. (1.2 kPa). Propane gas pressure regulators are preset for 10.0" W.C. (2.46 kPa). No
further adjustment should be required. Check gas pressures with a manometer at time of installation to
verify that they agree with the pressures specified.
Conversion Kit - GASKIT-ABC – Propane & altitude kit (2,000-10,000 ft.) are available and are to be field
installed as needed.
Prior to lighting, check all joints in the gas supply line for leaks. Use soap and water
solution. Do not use an open flame. After piping has been checked for leaks, all piping receiving
gas should be fully purged to remove air.
Model Volts Hertz Phase Amps (Max Used) BTU/Hr *Breaker (Amps)
ABC7G 120 60 1 5.0 80,000 15
* Breaker rating is based on electrical standard 125% increase over actual amps used.
TESTING THE GAS SUPPLY SYSTEM
When gas supply pressure exceeds 1/2psig (3.45 kPa), the oven and its individual shutoff valve must be
disconnected from the gas supply piping system.
When gas supply pressure is 1/2psig (3.45 kPa) or less, the oven should be isolated from the gas supply
system by closing its individual manual shutoff valve.
FLUE GAS EXHAUST
The flue is shipped loose and must be installed prior to operation. Failure to install
will cause service issues and will void warranty.
DO NOT obstruct the flow of flue gases from the flue located on the top of the combi oven. It is recommended
that the flue gases be vented to the outside of the building through a ventilation system installed by
qualified personnel. Information on the construction and installation of ventilating hoods may be obtained
from Vapor Removal from Cooking Equipment, NFPA-96 (latest edition) available from the National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
The output temperature of the exhaust fumes reach 480°F.
INCORRECT INSTALLATION CORRECT INSTALLATION
COMBI WALL COMBI WALL

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ELECTRICAL CONNECTION
Appliances equipped with a flexible electric supply cord are provided with a three-
prong grounding plug. It is imperative that this plug be connected into a properly grounded three-
prong receptacle. If the receptacle is not the proper grounding type, contact an electrician. Do not
remove the grounding prong from this plug.
Electrical and grounding connections must be in accordance with local codes, or
in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, or the Canadian
Electrical Code, CSA C22.2, as applicable.
Disconnect electrical power supply and follow lockout / tagout procedures.
The wiring diagram is located on the inside surface of the right side panel as you face the oven. Use
copper wire rated for at least 194°F (90°C) for the connection.
Do not drill a hole in the back panel for electrical connection. Use the strain relief locations
provided. This will allow proper access to components for service.
To make the electrical connections, remove the right side protective panel. Insert the power supply cable
throughthe strainrelief at therear ofthe unit. Oncethe optimalcable length isestablished forthe connections
to the terminal board, clamp the cable using the strain relief. Connect the cables with the terminal board
as indicated on the wiring diagram. The wires on the terminal board must be clamped firmly.
Gas Model Electrical Connection
Not recommended for ground-fault circuit-interrupter (GFCI) 125-volt, single-phase, 15- and 20-ampere
receptacle. Electronic burner ignition systems are prone to nuisance tripping and possible ignition failure.
GROUNDING
The oven must be properly grounded. Connect the ground conductor to the terminal block in the position
indicated on the terminal block label.
Model PH 208 V. 240 V. 480 V.
KW AMP KW AMP KW AMP
ABC7E 1 18 86.5 24 100 - -
3 18 50 24 57.8 24 28.9
* Breaker rating is based on electrical standard 125% increase over actual amps used.
NOTE: Single-phase blower motors are used on these ovens so there is no need to check direction of
motor rotation. The fan will rotate in the proper direction.
VENT HOOD
Local codes may require the oven to be located under an exhaust hood. Information on the construction
and installation of ventilating hoods may be obtained from Vapor Removal from Cooking Equipment, NFPA
Standard No. 96 (latest edition).
BEFORE FIRST USE
Calibration of the humidity measurement system must be performed prior to first use. Refer to the
service instructions on how to perform this step prior to first use. Altitude and gas supply affect humidity
measurement system so calibration is required before first use.
Before using the oven for the first time, it must be "burned in" to release any odors that might result from
heating the new surfaces in the oven. Remove any packaging material and instructions from inside and
outside of the unit as the surfaces will get hot. Operate the oven at maximum thermostat setting for 45
minutes.