For additional information on Vulcan-Hart or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanhart.com
VULCAN-HART
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
WWW.VULCANHART.COM
P.O. BOX 696, LOUISVILLE, KY 40201-0696
TEL. (502) 778-2791
FORM 35624 REV. A (08-04)
(Formerly F-31024 & F-33220)
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND
ADJUSTMENTS 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.
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.
IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.
Vulcan Gas Snorkel™ Convection Ovens are produced with quality workmanship and material. Proper
installation, usage and maintenance of your oven 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.
Models SG4D and SG6D feature a solid state temperature control, 1-hour dial timer with buzzer, twospeed
SG4C oven is equipped with a 60,000 BTU/hr. burner.
Models SG4C and SG6C are equipped with electronic time and temperature controls, two-speed
(0,25 kw) blower motor, a roast-and-hold feature, and porcelain interior as standard equipment. Each
SG6D and SG6C oven is equipped with a 60,000 BTU/hr. burner.
Models SG6D and SG6C have a deeper oven cavity.
Models SG44D, SG44C, SG66D, and SG66C consist of two single ovens and are supplied with a
stacking kit for mounting one oven on top of the other.
All ovens are equipped with a power level control which permits variation of the heat input between 22%
and 100% of full input.
All standard 120 volt ovens require single phase electrical service and are equipped with a 3 prong
grounding plug.
Oven doors open independently and all ovens are furnished with 5 racks.
Available options are simultaneous oven door opening, a 5-hour timer, 208/240 volt electrical service
with hard wire connection direct to the terminal block supplied with the oven, additional oven racks, and
an open stand with lower storage rack.
1
/3 HP (0,25 kw) blower motor and porcelain interior as standard equipment. Each SG4D and
1
/3 HP
FEATURES
ThermostatTimerStackRoast &
Model(Each Oven)(Each Oven)KitHoldLegs
SG4D/SG6DSolid State1-Hour Dial253/4" (654 mm)
SG44D/SG66DSolid State1-Hour DialX8" (203 mm)
SG4C/SG6CElectronicElectronicX253/4" (654 mm)
SG44C/SG66CElectronicElectronicXX8" (203 mm)
— 4 —
INSTALLATION
Before installing, verify that the electrical service and type of gas supply (natural or propane) agree with
the specifications on the rating plate located behind the top trim panel on the front of the oven. If the
supply and equipment requirements do not agree, do not proceed with the installation. Contact your
dealer or Vulcan-Hart immediately.
UNPACKING
This oven was inspected before leaving the factory. The transportation company assumes full
responsibility for safe delivery upon acceptance of the shipment. Immediately after unpacking, check
for possible shipping damage. If the oven is found to be damaged, save the packaging material and
contact the carrier within 15 days of delivery.
Carefully unpack oven and place in a work-accessible area as near to its final installed position as
possible.
Do not use the doors or their handles to lift the oven.
LOCATION
The equipment area must be kept free and clear of combustible substances.
When installed, minimum clearance from combustible construction must be 1" (25 mm) at the left side
4" (102 mm) at the right side, and 6" (152 mm) at the rear. Minimum clearance from noncombustible
construction must be 0" at the left side, 4" at the right side and 6" (152 mm) at the rear. The oven may
be installed on combustible floors.
The installation location must allow adequate clearances for servicing and proper operation.
The oven must be installed so that the flow of combustion and ventilation air will not be obstructed.
Adequate clearance for air openings into the combustion chamber must be provided. Make sure there
is an adequate supply of air in the room to allow for that required for combustion of gas at the oven
burners.
Do not permit fans to blow directly at the oven. Wherever possible, avoid open windows next to the
oven. Avoid wall-type fans which create air cross currents within the room.
— 5 —
INSTALLATION CODES AND STANDARDS
Vulcan ovens must be installed in accordance with:
In the United States of America:
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/NFPA-70 (latest edition). Copies may be obtained from The
National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
In Canada:
1. Local codes.
2. CSA B149.1 Natural Gas and Propane Installation Code.
3. CSA C22.1 Canadian Electrical Code.
The above are available from the Canadian Standard Association, 5060 Spectrum Way, Suite 100,
Mississauga, Ontario, Canada L4W 5N6.
INSTALLING BASIC OVEN
The basic oven must be installed on legs, casters or mounted on a modular stand. Installations on
concrete bases or other supports restricting air circulation underneath the oven is not advisable and
may void the warranty.
Ovens Mounted on Casters
Ovens mounted on casters must use a flexible connector
(not supplied by Vulcan) that complies with the Standard for
Connectors for Movable Gas Appliances, ANSI Z21.69 •
CSA 6.16 and a quick-disconnect device that complies with
the Standard for Quick-Disconnect Devices for Use With
Gas Fuel, ANSI-Z21.41 • CSA 6.9. In addition, adequate
means must be provided to limit movement of the appliance
without depending on the connector and the quick-disconnect
device or its associated piping to limit appliance movement.
Attach the restraining device at the rear of the oven as
shown in Fig. 1.
If disconnection of the restraint is necessary, turn off the gas
supply before disconnection. Reconnect this restraint prior
to turning the gas supply on and returning the oven to its
installation position.
Separate instructions for installing casters to the oven are
included with the casters.
CONNECT GAS
LINE STRAIN
RELIEF HERE
Fig. 1
PL-52805
Note: If the oven is installed on casters and is moved for any reason, it is recommended that the oven
be releveled front to back and side to side for even baking.
— 6 —
Assembling the Legs to the Oven
The legs must be installed on the bottom of the oven. Position oven on its back, taking care not to
scratch or damage it. The gas pipe connection protrudes beyond the back; provide for this when the
oven is tipped back by resting it on suitable spacers (2 x 4's [51 x 102 mm], etc.).
Attach each of the four leg assemblies to the bottom of the oven with the 24 bolts and lockwashers
(6 per leg). Carefully raise the oven to its normal position.
Assembling the Stand to the Oven
Attach each of the four leg assemblies to the bottom of the oven with the 24 bolts and lockwashers
(6 per leg). Carefully raise the oven to its normal position.
Attach the undershelf to the legs with 8 bolts and lockwashers (2 per leg).
Install the rack guides into the shelf at desired locations (for pan or flat rack), then attach the rack
supports to the top end of the rack guides. Attach rack supports to the leg assembly by removing one
middle bolt and reattaching back through the end holes in the rack support. (Fig. 2)
BACK
FRONT
Fig. 2
PL-52821
— 7 —
ASSEMBLING STACKED OVENS
Unpack the ovens and stack kit. Position the oven to be used as the bottom oven on its back for access
to the oven bottom, taking care not to scratch or damage it. The gas pipe protrudes beyond the back;
provide for this when the oven is tipped back by resting it on suitable spacers (2 x 4's [51 x 102 mm],
etc.). Attach the four leg assemblies with the 24 bolts and lockwashers (6 per leg).
7
Place the lower oven (with legs/casters) on the floor and remove two
/16" (11 mm) diameter knockouts
on each side of the top cover. Remove vent guard and discard it.
Move the oven (with legs/casters) to the installed position and place upper oven on top of lower oven
using the locating studs.
Remove the rear panel from the TOP oven. Install the two-piece stacking common flue (Fig. 3) with
the four screws provided. Replace the top oven rear panel.
Connect the piping between the top oven and bottom oven. Pipe compound must be suitable for the
type of gas being used (natural or propane).
TWO PIECE
STACKING
COMMON FLUE
VENT GUARD
PL-52884
Fig. 3
— 8 —
The manual gas valve, located behind the small door in the lower front panel, should remain off until
all electrical and gas connections are made and the ovens are ready to be used.
LEVELING
Ensure that the oven racks are level in the final installed position. If the oven is installed on legs, turn
the adjustable feet in or out to level the oven front-to-back and side-to-side.
ELECTRICAL CONNECTIONS
WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE
APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL
ELECTRICAL CODES.
WARNING: APPLIANCES EQUIPPED WITH FLEXIBLE ELECTRICAL POWER 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.
The SG series ovens are equipped with a 120 volt / 60 Hz. / 1 phase cord and plug.
Refer to the Installation Codes and Standards section of this manual.
A schematic decal is located on the inside of the right side panel.
GAS AND ELECTRICAL DATA
ATADSAG
LEDOM
larutaNenaporPlarutaNenaporPstloV021
C/D4GS
C/D6GS
C/D44GS
C/D66GS
000,06000,06"5.3"01spmA9
000,021000,021"5.3"01spmA81
RH/TUBTUPNIERUSSERPDLOFINAMENILPMA
3.5" (0.87 kPa)10" (2.49 kPa)
3.5" (0.87 kPa)10" (2.49 kPa)
LACIRTCELE
ATAD
— 9 —
GAS CONNECTIONS
Gas supply connections and any pipe joint compound must be resistant to the action of propane gases.
Location of the gas inlet is at the rear of the oven. Codes require that a gas shutoff valve must be
installed in the gas line ahead of the oven.
Connect gas supply after leveling the oven. The gas supply line must be at least the equivalent of
3
/4"
(19mm) iron pipe. Make sure the pipes are clean and free of obstructions, dirt, or pipe joint
compound.
The ovens are equipped with fixed burner orifices which match with installation elevation.
The oven is provided with a regulator integral to the gas solenoid valve and requires no external
regulator.
Natural gas pressure regulators are preset for 3.5" W.C. (Water Column) (0.87 kPa); propane gas
pressure regulators are preset for 10" W.C. (2.49 kPa).
WARNING: 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.
TESTING THE GAS SUPPLY SYSTEM
1
When gas supply pressure exceeds
/2 psig (3.45 kPa), the oven and its individual shutoff valve must
be disconnected from the gas supply piping system.
1
When gas supply pressure is
/2 psig (3.45 kPa) or less, the oven should be isolated from the gas supply
system by closing its individual manual shutoff valve.
ADJUSTMENTS
Air Adjustment
Although main burner air is adjusted before shipment, it should be checked at the time of installation.
Excessive air will cause flames to lift off a burner when cold or may cause flash-back during normal
cycling of oven, particularly when propane gas is used.
Insufficient air will cause flames to burn with a yellow tip and result in carbon accumulation in the flame
chamber and heat exchanger tubes.
Contact your local Vulcan-Hart servicer if required.
— 10 —
VENT SYSTEM
DO NOT obstruct the flow of flue gases from the flue located on the rear of the oven. It is recommended
that the flue gases be ventilated to the outside of the building through a ventilation system installed by
qualified personnel.
Ovens may use an optional down draft diverter flue method. This optional down draft diverter must be
purchased from the oven manufacturer and vented to the outside; otherwise, the installation of any
such devise will void all oven certifications and warranties. When the diverter is supplied, it may be
connected to a Type “B” vent.
From the termination of the flue to the filters of the hood venting system, a minimum clearance of
18" (457mm) must be maintained.
Information on the construction and installation of ventilating hoods may be obtained from the standard
for "Vapor Removal from Cooking Equipment," NFPA No. 96 (latest edition), available from the
National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
— 11 —
OPERATION
WARNING: THE OVEN AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING OR
CLEANING THE OVEN.
CONTROLS — MODELS SG4D AND SG6D (Fig. 4)
Fig. 4
— 12 —
Master Switch— ON — turns oven control circuits on.
OFF — turns oven control circuits off.
OVEN COOL — allows the fan motor to run with the doors ajar to
speed oven cooling.
On Light (Amber)— Lit when Master Switch is positioned at ON.
Heat Light (White)— Comes on and goes off when the burner cycles on and off.
No Ignition Light (Red)— Comes on if burner fails to ignite. When lighting the oven, the No
Ignition Light flashes.
Thermostat— Controls oven temperature during cooking operation.
Power Level Control— A potentiometer which permits variation of the heat input between
22% and 100% of full input.
Dial SettingPercent of Full Input
10100%
977%
873%
768%
660%
553%
445%
337%
228%
122%
One-Hour Timer— Use to set cooking cycle time. Alarm sounds continuously when
elapsed time counts down to 0; oven does not turn off. Turn timer
to OFF position to stop alarm. When oven is not in use, keep timer
at OFF position.
Two-Speed Fan Switch— Adjusts air velocity in the oven.
Light Switch— Turns lights in the oven on or off.
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 chamber.
1. Using a clean damp cloth, wipe the inside of the oven, including the racks.
2. Close the oven doors, push the Master Switch to ON, turn the Thermostat to 300°F (149°C), and
allow the oven to cycle for 6 to 8 hours before pushing the Master Switch OFF.
— 13 —
LIGHTING THE SG4D AND SG6D OVENS
1. Turn the main gas supply ON.
2. Turn the gas control valve (located behind the small door on the lower front panel) ON.
3. Push the Master Switch to ON and turn Thermostat to its maximum setting. Both the ON and HEAT
lights should come on. If HEAT light is not on, make sure the oven door(s) are closed.
4. If the oven fails to light, the red No Ignition light will be lit and remain on. Push Master Switch to OFF.
Turn gas off.
5. Wait 5 minutes before repeating Steps 1 through 4.
If the oven does not light after three trials, turn off the main gas valve and call a qualified servicer.
USING THE SG4D AND SG6D OVENS
Preheating
1. Select the proper rack arrangement for the product to be cooked. (See RACK ARRANGEMENTS
in this manual.)
2. Make sure the doors are closed.
3. Push Master Switch to ON. The amber ON light will come on, indicating that power to the oven is
on.
4. Set the Power Level Control to 10.
5. Set the two-speed Fan Switch to the desired setting.
6. Set Thermostat as desired. The Heat light will come on and remain on until the oven reaches set
temperature (approximately 10 to 15 minutes for settings from 300°F (149°C) to 400°F (204°C).
Refer to COOKING GUIDELINES in this manual for suggested temperatures and times for various
products.
7. Prepare product and place in suitable pans. When the white Heat light goes off, the oven has
reached the desired preheat temperature.
Cooking
1. Open doors and load the product into the oven. Place pans in the center of the racks. Close doors.
2. Set power level to desired baking setting.
3. Set the Timer. After the preset time lapses, turn timer to OFF position to stop alarm.
4. When product is done, open doors and carefully remove cooked product from the oven. Wipe up
any spills.
— 14 —
End of Day
1. Push Master Switch to OVEN COOL. Leave door ajar while the fan is on to cool the oven.
2. When oven has cooled sufficiently, push Master Switch to OFF.
3. Turn gas valve (located behind panel) OFF and clean oven.
4. Leave door open overnight or when oven is not in use for an extended period of time.
Extended Shutdown
Repeat Steps 1 through 3 above. Unplug oven and shut off manual gas valve.
Fig. 5
— 15 —
CONTROLS — Models SG4C and SG6C Built after October 1999
Y
Y
Always displays [HR:Min] when setting the Time.
Displays [HR:Min] if the countdown time is more than 1 Hour.
Displays [Min:Sec] if the countdown time is less than 1 Hour.
Displays Temperature in °F.
R & H
MODE
OVEN
READY
OVEN
HEATING
MENU SELECT
PRIMARY
SECONDARY
1
%
1/2
3/4
5/6
MENURACK
SET
ROAST
&
HOLD
START
STOP
2
3
4
5
R & H
MODE
OVEN
READ
OVEN
HEATING
PRIMARY
SECONDAR
%
SET
Indicates the oven is in the Roast and Hold Mode.
Indicates the oven is preheated and ready for cooking.
Indicates the oven is preheating.
Primary indicates Menu Items 1, 3, or 5.
Secondary indicates Menu Items 2, 4, or 6.
Up arrow increases; Down arrow decreases — a displayed Time or
Temperature value if arrow keys are lit.
Adjusts the oven heating rate or Power Level from 20 to 100 %.
TEMPERATURE: Use with SET to set the oven Temperature.
SET: Use with Time or Temperature.
POWERLIGHTS
ON
OFF
OVEN
COOL
ON
OFF
PL-53504
1/2
2 3 4
1
ROAST
&
HOLD
START
STOP
3/4
TIME: Use with SET to manually set the cooking Time.
Selects Roast and Hold mode; also selects Low Fan Speed.
Press once to start; press a second time to stop.
Select Menu Cook Times. Press once for Primary (1, 3, or 5).
5/6
Press a second time for Secondary (2, 4, or 6). See next page.
Rack Buttons select individual Menu / Rack # Cook Times — once
5
programmed.
— 16 —
MANUALLY SETTING THE COOK TIME, TEMPERATURE, AND POWER LEVEL
To Set the Cook Time
• Press the SET button. Press the TIME button.
• Use the Up and Down Arrow keys to increase or decrease the displayed Cook Time (HR:min).
• Press the SET button again to save the Time setting in the computer.
Tine
displays to indicate TIME.
To Set the Temperature
• Press the SET button. Press the TEMPERATURE button;
• Use the Up and Down Arrow keys to increase or decrease the displayed Temperature value.
• Press the SET button again to save the Temperature setpoint in the computer.
StPt
displays to indicate Setpoint.
To Set the Power Level
• Press the SET button. Press the % button.
• Use the Up and Down Arrow keys to increase or decrease the displayed Power Level value.
• Press the SET button again to save the desired Power Level value in the computer.
To Start Cooking
• Press the START / STOP button.
• The manual Cook Time counts down to 00:00. Displays [HR:Min] above 1 hour; [min: sec] below.
• The buzzer will sound. To silence the buzzer, press the START / STOP button again.
* The control retains the manual settings for Cook Time, Temperature, and Power Level.
TO PROGRAM MENU ITEM and RACK # Cook Times
Factory Preset and Programmable Cook Times are shown in the table, below:
NOITCELESUNEM
yramirP2/11.nim01
yradnoceS2/12.nim51
yramirP4/33.nim02
yradnoceS4/34.nim52
yramirP6/55.nim03
yradnoceS6/56.nim53
UNEM
METIMETI
METIMETI
METI
TESERPYROTCAF
METIUNEMMETIUNEM
METIUNEMMETIUNEM
METIUNEM
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
METIUNEM
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
1KCAR
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
2KCAR
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
The Primary indicator light with Menu 1 / 2 selects Menu Item 1 (Factory Preset Cook Time = 10 minutes). The
Secondary indicator light with Menu 1 / 2 selects Menu Item 2 (Factory Preset Cook Time = 15 minutes). Similarly,
for Menu Buttons 3 / 4 or 5 / 6. Any Menu Item Cook Time can be changed using the procedure below. Rack
# Cook Times may be programmed if desired but are not required.
SEULAVELBAMMARGORP
3KCAR
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
4KCAR
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
5KCAR
EMITKOOCEMITKOOC
EMITKOOCEMITKOOC
EMITKOOC
To Change the Time Setting for any Menu Item (1 – 6)
• To enter program mode, press and hold the Up and Down arrow buttons until PrOG displays.
✤ Select the Menu Item to be programmed (1 – 6).
Tine
displays to indicate TIME. Use the Up and Down arrow
buttons to increase or decrease the Menu Item's COOK TIME. Repeat this step for any other Menu Items.
• Press the START / STOP button; LOC displays. Press the START / STOP button a second time to save
the Menu Item(s)' COOK TIME(s).
• Press the START / STOP button once to begin cooking (with the Menu Item's Cook Time). To exit, press
the START / STOP button a second time.
To Program Individual Rack # Cook Times for a Menu Item
• To enter program mode, press and hold the Up and Down arrow buttons until PrOG displays.
• Select the Menu Item to be programmed (1 – 6);
✤ Then select the Rack # (1 – 5). [
t 1
] indicates Rack #1; [
Use the Up and Down arrows to increase or decrease the COOK TIME for any Rack #.
• Press the START / STOP button;
LOC
displays. Press the START / STOP button a second time to save
the Menu / Rack #'s COOK TIME(s).
• To exit program mode, press START / STOP twice.
Tine
— 17 —
displays to indicate TIME.
t 2
] indicates Rack #2; ... [
t 5
] indicates Rack #5.
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