Sequential Start - Daikin VRV R-407C PLUS Series Service Manual

SiE 00-07
1.8

Sequential Start

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