Installation / Operation Instruction Manual

Servicing Guide continued-

Electrical Door Lock:

An electrical door lock is offered in order to secure the access to the water

heater control cabinet. This device will lock the control cabinet door when the

120VAC control circuit voltage is applied to it.

Note: Once the door is opened, the water heater can be re-energized, if

necessary, for service diagnosis.

Power Circuit Description:

The Power Circuit Wiring Diagram illustrates the electrical connections from

the incoming power supply through the circuit to the electrical elements. The

power circuits are available with internal circuit fusing and without internal

circuit fusing.

Refer to the water heater power circuit wiring diagram attached to the inside

panel of the control cabinet for the specific connections of the water heater

being serviced. The power circuit components and supporting information

that appear on the wiring diagram include the following:

 Field wiring connection via terminal block or other connection point

 Fuse block with amperage ratings displayed (when provided)

 Contactors with amperage ratings displayed

 Electrical elements with voltage and wattage ratings displayed

 Water heater total amperage draw is displayed