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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
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