A.O. Smith DSE-5 Service Handbook page 21

Single Phase Wiring - 4 Pole Contactor
The illustrations below show how six wire heating elements (page 17) are wired to 4 pole
contactors on water heaters connected to a single phase power supply. See the
"Contactors" section of this manual - pages 34 - 38.
Connection Diagram
Heating Element Flange - End View
Two ends
Two ends
of loop 1 of loop 2
Servicing should only be performed by a Qualified Service Agent
OPERATION & SERVICE
Single phase (1Ø)
power supply
Three loops
of one heating element
Two ends
of loop 3
19
Wiring Diagram
Models configured for
single phase power (1Ø)
and equipped with 4 pole
contactors will have two
jumper wires. One
between the 1st and 3rd
poles of the contactor
and one between the 2nd
and 4th poles of the
contactor.
4 Pole
Contactor