Operation Time For Unit Rotation - A.O. Smith 710 ASME Service Manual

12-10. Operation time for unit rotation

The unit that turns on first is whichever unit the 710 decides is the primary unit.
The priority unit will rotate when it reaches 100 ON / OFF cycles or after 12 hours of operation.
NOTE: The priority unit is the unit that turns on first when there is a hot water demand.
When there is a black out and/or cut off for over 50 minutes, priority unit will switch back to
Unit #1.
Example: Four units of 710 models Rotation
A rotation occurs when:
ON/OFF cycles (×100 times) or Hours of operation (12 hours)
Priority Unit
Priority Unit
Priority Unit
Unit
No.1
1
4
3
Unit
No.2
2
Next step
1
Next step
4
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CONFIDENTIAL
710 / 710 ASME Service Manual
Unit
No.3
3
2
1
Ver. 1.00
Unit
No.4
4
3
2