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240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
12-10. Operation time for unit rotation
Only 540 (T-H3) models
The unit that turns on first is whichever unit the 540 (T-H3) models 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 540 (T-H3) models Rotation
A rotation occurs when:
ON/OFF cycles (×100 times) or Hours of operation (12 hours)
Unit No.1
Unit No.2
Unit No.3
Unit No.4
Priorty unit
1
2
3
4
Priorty unit
4
1
2
3
Priorty unit
3
4
1
2
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