Hobart HGC20, ML-114573, ML-114575 User Manual

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HGC20 & HGC20D GAS CONVECTION OVENS
MODELS
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 33580 Rev. E (Mar. 2005)
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.
© HOBART CORPORATION, 1996, 2005
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Installation, Operation, and Care of
HGC20 AND HGC20D
GAS CONVECTION OVENS
SAVE THESE INSTRUCTIONS FOR FUTURE USE

GENERAL

The HGC20 Gas Convection Oven is a single cavity oven and features a solid state thermostat, 1-hour dial timer, and five racks as standard equipment. Additional oven racks are optional. Each oven is equipped with a 25,000 BTU/hr burner and a with porcelain interior; stainless steel exterior.
Model HGC20D is similiar to model HGC20, except the HGC20D has either an electronic control or programmable control package in place of the solid state controller.
Two single ovens can be ordered with a stacking kit for mounting one oven on top of the other.
1
/2 HP (0.37 kw) electric motor. The oven comes standard
A single oven may be installed on an open stand with lower storage rack (optional).
COOK & GENTLE RACK #
MODEL THERMOSTAT TIMER HOLD BAKE COOK TIMES
HGC20 Solid State 1-Hour Dial
HGC20D before Octover 1999 Electronic Electronic X X
HGC20D after October 1999 Programmable Programmable X X

INSTALLATION

UNPACKING
Immediately after unpacking the oven, check for possible shipping damage. If this oven is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Prior to installation, verify that the electrical supply and type of gas supply (natural or propane) agree with the specifications on the oven data plate, located on the inside of the top front cover.
Do not use the door or its handle to lift the oven.
LOCATION
The equipment area must be kept free and clear of combustibles. Maintain clearances from combustible or noncombustible construction for at least 3" oven. The installation location must allow adequate clearances for servicing and proper operation.
(7.6 cm) from the side and 3" (7.6 cm) from the back of the
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.
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INSTALLATION CODES AND STANDARDS
Hobart 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 C22.2 Canadian Electrical Code.
The above are available from the Canadian Standard Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.
Ovens Mounted on Casters
Ovens mounted on casters must use a flexible connector (not supplied by Hobart) that complies with the Standard for Connectors for Movable Gas Appliances, ANSI Z21.69 • CSA 6.16 and a quick­disconnect device that complies with the Standard for Quick­Disconnect 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 quick­disconnect device or its associated piping to limit appliance movement. Attach the restraining device at the rear of the oven as shown in Fig. 1.
CONNECT
GAS LINE
STRAIN RELIEF
HERE
PL-53563
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.
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.
Assembling the Legs to the Single Oven
The 4"
(10 cm) or 6" (15 cm) legs are packed inside the oven during shipment and must be installed on
the bottom of the oven. Place the oven on its left side, being careful to avoid scratching the finish. The gas pipe connection protrudes beyond the back; provide for this when oven is tipped back by resting it on suitable spacers (2 x 4's etc.).
Thread each of the four leg assemblies into the holes provided on the bottom corners of the oven. Carefully raise the oven to its normal upright position.
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Assembling the Chimney to the Single Oven
Remove the chimney from inside the oven cavity and use the screws provided to fasten the chimney to the top rear of the oven (Fig. 2). The flanges on the chimney are to be positioned over the top cover.
ASSEMBLING THE OVEN TO THE STAND
Position the 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). Install the two locating studs (included in the stand carton) into the screw plates on the underside of the oven (Fig. 3).
Attach each of the four leg assemblies to the bottom of the stand with the 12 bolts and lockwashers (3 per leg). If casters are used instead of legs, put fixed casters in rear and swivel casters in front using 12 bolts and lockwashers (3 per caster). Mount the oven on top of the stand.
ASSEMBLING STACKED OVENS
CHIMNEY
PL-52240
Fig. 2
FRONT OF TOP OVEN
LOCATING STUDS
Determine which oven will be on the bottom and place it on its left side, being careful to avoid scratching the finish. Install the four 163/4"
(42.5 cm) legs, using the 24 bolts and lockwashers provided (6 per
leg). Remove the two
7
/16" (1.1 cm) knockouts on each side of the top cover and place oven in upright position at installation location. Turn the adjustable feet in or out to level the oven front-to-back and side-to-side (refer to LEVELING, page 6).
Remove right-hand side panels from both ovens. Remove welded plate from bottom of upper oven (Fig.3). Install the two locating studs (included in leg stack set) into screw plates on underside of upper oven (Fig. 3). Place upper oven on top of lower oven using the locating studs.
Remove flue extension from upper oven. Install long flue extension into existing right-angled flue extension in lower oven. Attach long flue extension to wall of upper oven using screws provided. Secure chimney to roof of upper oven (Fig. 4).
Install right side panels on both ovens. Connect the piping between the top oven and bottom oven. Pipe compound must be resistant to the action of propane gases.
The manual gas valve at the bottom of the control panel should remain off until all electrical connections are made and the ovens are checked or used.
BOTTOM
KNOCK OUT WELDED PLATE FOR FLUE EXTENSION INSTALLATION
REAR OF TOP OVEN
PL-52992
Fig. 3
CHIMNEY
LONG FLUE EXTENSION
RIGHT ANGLED FLUE EXTENSION
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PL-52221
Fig. 4
LEVELING
Once the oven is in its permanent position, place a carpenter's level on the oven rack. If the oven is installed on legs, turn the adjustable feet in or out to level oven front-to-back and side-to-side. If the oven is installed on casters, loosen set screws and turn casters in or out to level oven front-to-back and side-to-side. Retighten set screws after leveling.
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: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES.
WARNING: 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.
The 120 volt models are equipped with a cord and plug.
Refer to electrical wiring diagram located inside the right side panel; remove control panel for access.
Do not turn the power supply on until after the gas connections have been made and checked for leaks.
ELECTRICAL DATA
Minimum Circuit Ampacity
Maximum Protective Device
MODEL Volts Hertz Phase AMPS
120 60 1 15
HGC20 200 - 240 50 1 15
200 - 240 60 1 15
HGC20D
Complied in accordance with the National Electrical Code, NFPA-70 (latest edition).
120 60 1 15
200 - 240 50 / 60 1 15
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