Hobart HFB12 ML-114909 manual Electrical Connections, For Cord-ConnectedOvens, For Hard-WiredOvens

The other end of the duct can be vented into an existing hood, or to the outside in a manner consistent with local building codes.

The exhaust duct must not be less than 4" (101.5 mm) in diameter, and a recommended maximum length of 4 to 6 feet (1219-1829 mm), depending on operating conditions. The duct should be made of metal suitable for high temperature use. Be sure there are no bends in the duct that will restrict air flow. Depending on the length of the duct required, it may be necessary to have a supplementary exhaust system to ensure adequate air flow.

The exhaust system must support 135 cfm.

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 ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE DISCONNECT SWITCH TO INDICATE YOU ARE WORKING ON THE CIRCUIT.

WARNING: APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE PROVIDED WITH A FOUR-PRONG GROUNDING PLUG. IT IS IMPERATIVE THAT THIS PLUG BE CONNECTED INTO A PROPERLY GROUNDED FOUR-PRONG RECEPTACLE. IF THE RECEPTACLE IS NOT THE PROPER GROUNDING TYPE, CONTACT AN ELECTRICIAN. DO NOT REMOVE THE GROUNDING PRONG FROM THIS PLUG.

Measure the incoming power supply with a volt ohmmeter. The supply MUST measure 197 volts with no load as a minimum.

For Cord-Connected Ovens

Plug the oven into a dedicated circuit outlet of the appropriate NEMA style and rating.

For Hard-Wired Ovens

Have a qualified electrician wire the oven into a properly rated dedicated circuit, connecting to the pigtails in the junction box on the rear of the oven. Use the appropriate conduit, wire and connectors.

For a Single-Phase 240 Volt Oven

Both "hot legs" must read 120 volts to ground. The "stinger" leg must not be attached to a single-phase oven.

For a 3-Phase 240 Volt Oven Only (Does not apply to a 208 Volt Oven)

When connecting a 3-phase 240 volt oven, the "stinger" leg of the supply circuit MUST be connected as follows:

For a hard-wired oven, connect the stinger to the blue pigtail. The blue wire is marked with a label indicating the stinger connection.

For a cord-connected oven, the stinger must be wired to the receptacle at the pin location opposite the ground lug (Fig. 2).

The "stinger" leg of a 240 volt, 3-phase system can be easily identified using a voltmeter. The line-to-ground voltage of the stinger will read approximately 210 volts. The line-to-ground voltage of the other two legs will read approximately 120 volts.

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