Old Hickory VPO-54 User manual

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Models
VPO-54
VPO-42
Visual Pizza Oven
Installation and Operating Instructions
RETAIN THIS MANUAL FOR FUTURE REFERENCE
Hickory Industries, Inc.
4900 Westside Avenue, North Bergen, NJ 07047
Tel: [phone] Fax: [phone]
Website: www.hickorybbq.com

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Please copy, cutout and place in a prominent location.
What To Do If You Smell A Gas Odor
Natural gas is lighter than air, and it has a very high ignition
temperature. For your protection, The Gas Company adds a distinctive odor
to natural gas, so leaks are easily detected.
If you smell a Natural gas or a Propane gas odor:
DON’T panic.


DON’T light a match, candle or cigarette.


DON’T turn electrical appliances or lights on or off.
For safety, a shut-off valve was installed on this appliance. If a leak
occurs at this appliance, the valve will permit you to turn off the gas at the
appliance rather than shutting off all gas service at the meter.
SHUT off the appliance shut-off valve.
· From a safe location, call your local Gas Company 24 hours a day,
seven days a week; or call 9-1-1.

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INTENDED FOR OTHER THAN HOUSEHOLD USE
OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES
IMPORIMPOR
IMPORIMPOR
IMPORTT
TT
TANT INSTRANT INSTR
ANT INSTRANT INSTR
ANT INSTRUCTIONSUCTIONS
UCTIONSUCTIONS
UCTIONS
After the gas supply has been connected to your unit, it is extremely important to check piping
for possible leaks. To do this, use soap and water solutions, or solutions which are expressly
made for this purpose. DO NOT USE matches, candles, flames, or other sources of ignitions
since these methods are extremely dangerous.
In a prominent location post instructions to be followed in the event you smell gas. Obtain these
instructions from your local gas supplier.
FORFOR
FORFOR
FOR YY
YY
YOUR SAFETYOUR SAFETY
OUR SAFETYOUR SAFETY
OUR SAFETY
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WARNINGWARNING
WARNINGWARNING
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
injury or death. Read the Installation, Operating and Maintenance Instructions thoroughly before
installing or servicing this equipment. Initial heating of oven may generate smoke or fumes and
must be done in a well ventilated area. Overexposure to smoke or fumes may cause nausea or
dizziness.
NOTE: Only Pizza and Bread Products can have direct contact with the deck. All other food
products must be placed in cast iron pans or suitable metal pans avoid direct contact with the
deck. Otherwise commingling of product and flavors will happen. Metal screens can be used, but
marring will occur on the steel deck. This equipment has been engineered to provide you with
year round dependable service when used according to the instructions in this manual and standard
commercial kitchen practices
As a safety precaution, disconnect the power supply to
the appliance before cleaning or servicing this appliance.
Instruction Plate:
Before lighting this piece of equipment, ensure
that the ventilation hood is turned on
.
1. Pull E-stop switch; 2. Turn on power switch; 3. Press the
preheat button on the display panel; 4. Lower and upper burn-
ers will light. In case of flame failure, reset the alarm(s) and
wait five minutes before relighting the appliance.

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NOTICE: In order to be able to service this appliance, it must
be installed with the casters supplied, a connector complying
with ANSI 22 7 .69 CSA 6.7 6 and a quick-disconnect device
complying with ANSI 227.47 CSA 6.9. It must also be installed
with restraining means to guard against transmission of strain
to the connector as specified in the appliance manufacturer’s
instructions.
INSTALLATION GUIDELINES
GAS
Gas installation must conform with local codes, or in the absence of local codes, with the National
Fuel Cas Code, ANSI 2223.1 /NFPA 54, or the Natural Gas and Propane Installation Code,
CSA B749.1
ELECTRICAL INSTALLATION
This appliance, when installed, must be electrically grounded 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. For your convenience, this appliance has been
wired with a NEMA 5-15 cord and plug and should be plugged in to a corresponding NEMA 5-15
receptacle. The grounding prong SHOULD NOT BE CUT. Cutting the grounding prong will
void the manufacturers warranty
PRESSURE TEST
The appliance and its individual shut off valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of 1/2psi (3.5 kpa).
The appliance must be isolated from the gas supply piping system by closing its individual manual
shut off valve during any pressure testing of the gas supply piping system at test pressures equal
to or less than 1/2psi (3.5 kpa).
For Natural Gas: when upper burners (3) are equipped
with No. 42 drill size orifice and lower burners (2) are
equipped with No. 32 drill size orifice.
For LP Gas: when upper burners (3) are equipped with
No. 50 drill size orifice and lower burners (2) are equipped
with No. 41 drill size orifice.
Electrical diagrams for this appliance are located
behind the rear electrical box cover as well as in this
manual.
ENSURE YOU DISCONNECT THE POWER
BEFORE OPENING REAR ENCLOSURE!

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Index
Installation Instructions
1 Receiving
2 Clearances
3 Setup
4 Gas and Electrical Connections
5 Pizza Deck Care
6 Burner Lighting Procedure
7 Aeration Adjustments
Operating Instructions
1 Burner Lighting Procedure
2 Breaking In
3 Pre-Heating
4 Baking/Cooking
Cleaning & Maintenance
1 Stainless Steel Surfaces
2 Deck Maintenance
3 Lights
4 Ignitors
5 Glass
6 Parts Breakdown
For North America: 120V, 1 Phase, 60 Hz.
Unit comes with a NEMA 5-15 Plug
Type of Gas Manifold Pressure
Natural 5.5” Water Column
LP 11” Water Column
Installation Instructions
1 Receiving:
Read the notice on the outside carton regarding damage in transit. Damage discovered after
opening the crate(s) / carton(s) is “CONCEALED DAMAGE” and the carrier must be notified immediately
to send an inspector and also furnish the forms for the consignee’s claim against the carrier.
When oven arrives, it should consist of : A crate or carton containing your new oven, a carton,
containing 4 legs with mounting hardware (if removable legs were shipped). Your glass posts and glass
will be packaged in bubble wrap.
Installation must conform with local codes and/or with the latest edition of the ANS Z-233.1 National
Fuel Gas Code in USA/ CAN/CGA-B149.1 or 2 Installation Code in Canada.
This appliance must be installed by a competent person.
Place the oven and parts as close as possible to the area of final installation before un-crating.
2 Clearances:
Minimum Clearance From Combustible Construction Non-Combustible Construction
Left Side 12” 6”
Right Side 12” 6”
Rear 24” 12”

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Drawing of right side and back of the oven
3 SETUP:
The oven must be installed in a well-ventilated area. Your oven is packed standing on its
casters. The skid may be left under the oven for convenience in further handling. Unpack carefully
to avoid damage to the oven. If concealed damage is found, follow the instructions detailed in
Section 1.
Keep the area around the oven free and clear of combustible materials. Do not store any
materials on top of or under any oven. Provisions for adequate air supply to your oven for ventilation
and proper gas combustion is essential. As a minimum, observe the clearances detailed in Section
2. Provide adequate ventilation and make up air in accordance with local codes.
The oven must be installed under a ventilation hood. Gaylord has designed a hood for this
oven - we have attached these pages seperatly with the packet that was shipped with this unit.
Fire suppression will be required by code. Local inspectors and ventilation specialists should be
consulted to make sure that the installation of the hood conforms to the local codes and
requirements.
4GAS AND ELECTRICAL CONNECTIONS:
Normal factory connections are made for 120 Volts AC, 60 Hz operation in USA and Canada.
The appliance, when installed, must be electrically grounded in accordance with local codes and/
or the latest edition of the National Electric Code /NFPA 70 in USA (Canadian Electric Code CSA
C22.2 in Canada).
The lights, ignition system, all related switches, indicator lights and fuse, are all connected
through the 6 ft. (1830 mm) power supply cord. The power supply cord must be plugged into a
properly grounded three-prong receptacle.
A wiring diagram may be found behind the service panel on the left side of the unit and
also in this manual.
The oven should not be installed on the same line with space heaters, boilers or other gas
equipment with high intermittent demand. This will cause fluctuation in gas pressure and result in
bad cooking results.
3/4” Gas Connection Six Foot Cord & Plug

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Use a pipe joint compound that is resistant to the action of Natural and liquefied petroleum
gases when making gas connections. For Propane gas, use a least ½. pipe or tubing with a 5/8
inside diameter. For Natural gas, use ¾. pipe.
The appliance must be isolated from the gas supply piping system by closing its manual
shut-off valve during any pressure testing of the gas supply piping system at test pressures equal
to or less than ½. psig (3.45 kpa).
The appliance and its shut-off valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of ½. psig (3.45
kpa).
The gas pressure regulator is part of the oven and is adjusted at the factory to yield a
pressure of 5.5” water column for Natural Gas. If the oven has been ordered for use on Propane
Gas, the pressure regulators preset at the factor to yield a pressure of 11” water column.
A shut-off valve for the oven and must not be removed. This gas shut-off valve is for
pressure checks.
After the gas supply has been connected, it is extremely important to check all the piping
for leaks. Use a soap and water solution or a product made expressly for this purpose. Do not use
matches, candles or a flame etc. to check leaks since these methods are extremely dangerous.
The plumber should ensure that there are no leaks and that the gas pressure does not drop below
manifold pressures.
5 Pizza Deck Care:
The pizza deck is constructed of steel. It has been pre-burned with lard at the factory as
you would a cast iron skillet or pan. Other oils can be used. Care of placing product on the deck
is important. Otherwise, the acids of spilled food or sauces will remove the coating. The deck
should be re-coated periodically depending on use.
6 Burner Lighting:
Your state of the art oven requires no pilot lighting. The pizza oven’s computerized
system automatically controls ignition for the deck burners and the topping burners.
7 Aeration Adjustment:
Flame and air mixer adjustments for the Main Burner and the Booster Burner, and the By-
Pass Flame adjustment for the Main Burner are all done at the factory. These adjustments are
sealed before the oven leaves the factory. Contact an authorized Service Agency if you need help.

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Operating Instructions
If gas odor is detected at any time, immediately shut off the top button on the oven and
shut off the gas supply valve to the oven. Do not permit any open flames in the area of the
oven. Immediately contact an authorized Service Agency or your local Gas Supply
Company. Initial heating of the oven must be done in a well-ventilated area as it may
generate smoke or fumes. Overexposure to smoke or fumes may cause nausea or dizzi-
ness. Whenever lighting the oven, the ventilation system must be on.
1 Burner Lighting Procedure:
Your state of the art oven requires no pilot lighting. The pizza oven’s computerized
system automatically controls ignition for the deck burners and the topping burners. Burner
lighting instructions are provided under preheating.
2 Breaking in:
Since your oven has a steel deck, no breaking period is required. If during installation, the
deck may has gotten scratched, you should follow “Deck Maintenance” procedures.
3 Pre-Heating:
Ensure oven has been connected to gas and plugged in according to the installation
instructions.
Ensure you are familiar with the front panel.
Emergency Stop Display Touch Screen Power Button
Emergency Stop - Turns off power to the entire oven.
Display Touch Screen - The interface between the operator and the computerized controls. All
temperature adjustments, motor speed adjustments, cooking burner intensity adjustments are
entered with the display.
Power Button - Supplies the motor, lights and ignition systems with power.

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Home Screen:
This screen is your HOME screen. This allows you to start preheating your oven, check for any
alarms and adjust your cooking parameters. Pressing stop on this screen will do nothing.
Pre-Heat:
Pressing the “Pre-Heat” button will allow you to Pre-Heat the oven using your previously
entered cooking parameters. You can also adjust your times, temperatures, deck speed
and deck temperature before or during your preheat. Once you have begun cooking your
products, you will be more familiar with this screen and you will have to use this screen
less because all your cooking data will be stored so all you would have to do is hit “Start
Pre-Heat” to preheat your oven. Pressing “Stop” while preheating will stop your preheat.
Pressing “HOME” will bring you to the “HOME”Screen.
Alarm Screen:
Pressing the “Alarm” button will display any alarms that might have come up. I.e. burner failure,
E-stop etc. The alarms must be reset in order for the oven to work. Pressing the “RESET
ALARMS” button will clear up the alarm(s).

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Adjust Screen:
Pressing the “Adjust” button will guide you to the adjustment screen. This will allow you to
set the following: Pre-Heat Temperature, Top Burners intensity settings (Low Medium and
High). Temperature offset should remain at 75. Top burner intensities can me modulated.
High can be 100% or 85% These intensities will vary on your dough, sauce, cheese and
toppings. Low inteyour temperature settings, upper burner intensities
The adjust screen will also allow you to enter your recipes. You can view Helpful Hints
section for more details. Also from the adjust screen, a trained service technician can go
to a maintenance screen for trouble shooting purposes.
When you press the Pre-Heat Temperature button, the Top Burners (LOW / MED / HIGH)
buttons a screen will pop up like a calculator. This is where you input your settings and hit
enter. Pressing “home” will toggle you to the “HOME” screen and you are ready to preheat
your oven and then your ready to cook.
4 Baking/Cooking:
To make pizza pies, preheat your oven by pressing the “Pre-Heat” button on the HOME
Screen. The upper burners will automatically turn on high. Choose your intensity. When the
oven is ready to cook, the upper burners will shut down which means you have reached temperature.
Press “Start Cook” - the “Pre-Heat” button will change to display “Start Cook”. Place your pie on
the rotating top and your cooking pizza. When done cooking your pie(s), press the “STOP” button
and then your “Pre-Heat” button. This will start your sequence again. Pressing the preheat button
will help you save energy and maintain your deck temperature even.
Cooking other products, you will follow the same procedure above. You can place cast
iron skillets or cast iron pans to cook steaks, fish, sausages etc.

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Cleaning & Maintenance
1 Stainless Steel Surfaces
All stainless steel surfaces should be cleaned and polished on a daily basis. If spillage
occurs, ensure that the spill is cleaned immeadiately otherwise the spill can bake on the stainless
steel surfaces.
2 Deck Maintenance
The steel deck is 5/16” thick and filled with a proprietary inert gas that evenly distributes
the heat on the deck. At the factory we season the deck with lard as you would a cast iron skillet
or wok. When daily cooking spills fade the deck, the deck must be re-seasoned.
To re-season the deck, preheat the deck to 550F. Once the deck is preheated, with lint
free cloth, coat the deck lightly and press “Start Cook” for an hour or until you visually see the
smoke clear. Please ensure this is done with the ventilation system ON.
3. Lights
The oven uses 10 volt DC halogen lamps. They can be purchased directly from Hickory.
When replacing the halogen lamps, you must ensure that they are taken from the box with a dry
clean cloth. If you handle them with your hands, the oil in your hands will adhere to the lamp.
Halogen lamps burn very hot and oil will burn the lamp rapidly.
4 Igniters
The igniters are set at the factory. If you are experiencing ignition problems contact your
local Hickory service agent or Hickory directly.
5 Glass
Clean the glass daily with a glass cleaning agent. If you use the oven to cook steaks or
fatty foods on cast iron skillets, there will be a high grease residue on the glass.

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6 Parts Breakdown
P001 P002 P003
P006
P0017 &
P018
P016
P007 &
P008
P009
P0011 &
P012
537

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Electrical Diagram

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Gas Conversion
WARNING
This conversion shall be performed by a qualified service agency in accordance with the manufacturer’s
instructions and all applicable codes and requirements of the authority having jurisdiction. If the information
in these instructions is not followed exactly, a fire, an explosion or production of carbon monoxide may result
causing property damage, personal injury or LOSS of life. A qualified service agency is responsible for the
proper installation of this kit. The installation is not proper and complete until the operation of the converted
appliance is checked as specified in the manufacturer’s instructions supplied with the kit.
1 Ensure the electrical power and gas is shut off to the appliance.
2 Ensure correct conversion kit has been ordered. N2LPGCK for Natural gas to LP gas
or LP2NGCK for LP gas to Natural gas. Each kit should include three upper burner
orifices and two lower burner orifices.
3 To replace the upper orifices, remove the upper cover and locate the orifices. Remove
and replace with the appropriate orifices. Ensure that the orifice spuds are TIGHT.
4 Remove lower cover and locate the orifice to both lower burners. Remove and replace
the appropriate orifices. Ensure that the orifice spuds are TIGHT.
5 After the orifices have been changed, the manifold pressure on the regulator has to be
set. A manifold pressure of 5.5” water column for Natural Gas and 11” water column for
LP gas. The pressure check should be taken downstream of the pressure regulator
with gas flowing. There is a gas shut-off valve with a port for measuring gas pressure.
Turn the unit on in accordance with the instructions and adjust the regulator pressure.
The pressure regulator has a screw cap that must be removed. After the cap has been
removed, you can adjust the spring pressure with a phillips or flat screwdriver.
6 After the manifold pressure has been set, the lower burners air mixture must be set.
Adjust the lower burners (2) for proper combustion. This can be achieved by closing
and/or opening the air shutter and observing the burner flame color. If the lower burner
flame is yellow, then the burner needs more air. If the burner flame lifts off the burner,
then the burner needs less air. Adjust the lower burners accordingly.
7 Turn both upper and lower burners and observe them.
8 When observing the upper burners, visually verify that the pilot flame is a 1/4” diameter.
If the pilot flame is larger, adjust the pilot adjusting screws.
9 Once all adjustment have been complete, return the equipment back to operating
condition.
For Natural Gas: when upper burners (3) are equipped
with No. 42 drill size orifice and lower burners (2) are
equipped with No. 32 drill size orifice.
For LP Gas: when upper burners (3) are equipped with
No. 50 drill size orifice and lower burners (2) are equipped
with No. 41 drill size orifice.