Daikin VRV R-407C PLUS Series, Service Manual

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SiE 00-07 Test Operation
Test Operation R-407C PLUS Series 95
1.8 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.
Improved 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.”
In the case of power supply in the same line
(8. 10HP outdoor unit)
Power supply
Power supply
Power supply Power supply
(System 8)
(System 1)
(System 7) (System 6) (System 5) (System 4) (System 3)
Power supply
RSXY
R407C
VRV
PLUS
Master Sub
Power supply
(System 2)
Master Sub
Wir
ing betw
een outdoor unit
(VL123)