Servicing should only be performed by a Qualified Service Agent
35
OPERATION & SERVICE
Contactor Configurations
Depending on how the water heater was configured in the factory there will be two types of
contactors used; 3 pole and 4 pole contactors. The illustrations below show the five standard
contactor configurations. There are more detailed heating element connection/wiring
diagrams for these standard configurations on pages 18 - 22. Also see the Heating Element
Construction and Heating Element Wiring information on pages 16 - 17.
The illustrations below show standard configurations. The water heaters covered by this
manual can be custom ordered and may have configurations other than what is shown in
this manual. Always refer to the wiring diagram on the water heater.
Three Phase (3Ø) Power
Single Phase (1Ø) Power
3 Pole Contactor
3 Pole Contactor
3 Pole Contactor
4 Pole Contactor
4 Pole Contactor
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