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10
the black/white wire from terminal
Tl. The black/white wire is field
connected with yellow/black wire
to terminal Ll. The branch circuit is
connected to terminals Ll, L2, and
T2. The branch circuit must be sized
according to the total rating of the
water heater in three phase operation.
Three Phase Non-
Simultaneous
To install the water heater as a three
phase non-simultaneous operation,
remove the black/white wire from
terminal Tl. The black/white wire is
field connected with brown/white wire
to terminal TM. The branch circuit
is connected to terminals Ll, L2, and
T2. The branch circuit must be sized
according to either the upper element
or the lower element rating, whichever
is greater. If they are equal, size the
branch circuit according to the lower
element rating.
Wire Sizing
Check the rating plate on the water
heater for correct voltage. Refer to the
column under the corresponding phase
(1-phase or 3-phase) and element
operation (non-simultaneous or
simultaneous) for the rated amperage
of the water heater. The branch circuit
and its overcurrent protection must
be sized in accordance with the local
codes or the National Electric Code
NFPA 70 using the correct amperage
rating on the water heater.
Once installation is complete, compare
the installation with the wiring
diagram to ensure that the conversion
to the desired configuration is
complete.
CAUTION: To reduce
the risk of electric shock,
disconnect both branch
circuits before servicing the
water heater installed in this
configuration.
!
CAUTION: For the
terminal block configuration,
the water heater is dual rated
for three-phase or single-
phase and non-simultaneous
or simultaneous operation.
Refer to the wiring diagram
and inspect the field wiring to
determine the installed water
heater configuration.
!
Installing the water heater.
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