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PACD011001C2
1.8
Test Operation
Sequential Start
„ Separates path timing of commercial power supply compressors by 3 seconds each in order to prevent
overcurrent when more than 1 compressor are to be started at the same time.
„ Wiring system enables sequential start of up to 10 outdoor units.
If you want to carry out sequential start, connect outdoor unit - outdoor unit transmission wiring as shown
below.
The outdoor unit PC board (EC) is factory set to “sequential start ON.”
Power supply
Power supply
(System 1)
(System 2)
MA1R Series
Sub
Master
(System 8) (System 7) (System 6)
(System 5)
(System 4)
Power supply
Power supply
Power supply
Sub
(System 3)
Power supply
Wiring between outdoor unit
Master
MX1R Series
In the case of power supply in the same line
(8. 10HP outdoor unit)
Test Operation UM Combination “MA1R Series” Using R-407C
(VL123)
471