Conversion To Single Phase; Conversion To Three Phase - A.O. Smith 52 Instruction Manual

CONVERSION TO SINGLE PHASE

When the heater is shipped for connection to a three-phase
electrical service, it may be connected to a single-phase
electrical service of the same voltage by:
1. Disconnect blue wires and yellow wires from terminal L3.
2. Reconnect all blue wires to terminal L1 (with black wires).
3. Reconnect all yellow wires to terminal L2 (with red wires).
4. Connect incoming power to terminals L1 and L2.
WIRING DIAGRAMS
Figure 7. Nine Element - Single and Three Phase

CONVERSION TO THREE PHASE

When heater is shipped for connection to a single-phase
electrical service, it may be connected to a three-phase
electrical service of the same voltage by:
1. Disconnect blue wires from terminal L1.
2. Disconnect yellow wires from terminal L2.
3. Reconnect all blue wires and yellow wires to terminal L3.
4. Connect incoming power to terminals L1, L2, and L3.
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