Daikin SV1A25AJV1B - Page 95

16 | Electrical installation
Installer and user reference guide
95
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
d When joining branch pipes C and D
A1/A2 Indoor unit A connected to the branch pipe A of SV unit 1 and SV unit 2 respectively
B1/B2 Indoor units B1 and B2 connected to the same branch pipe B of SV unit 1
C Indoor unit C connected to joint branch pipes C and D of SV unit 1. The F1/F2
terminals of the indoor unit only have to be connected to one of the two F1/F2
terminals inside SV unit 1.
Note: The DIP switches of each control PCB in the SV unit switch box have to be set
accordingly to the interconnection wiring. See "16.4 To set the DIP
switches"[496].
5 Connect the power supply as follows. The earth wire needs to be attached to
the cup washer:
1~ 50 Hz
220-240 V
X1M
a
b
c
a Earth leakage circuit breaker
b Fuse
c Power supply cable
6 Attach the cables (power supply and interconnection cables) with a cable tie
to the provided fixation points. Route the wiring according to the illustration
below.
c c c c c b c
SV1~8A
X1M
X3M
X2M
SV6~8A SV4~8A
c
c
SV1A
SV6~8=X4M
SV4A=X3M
X3M
a
a Power supply cable (field supply)
b Interconnection cable (field supply)
c Cable tie (accessory)
Guidelines
▪ Make sure the length of the earth wire between the fixation point and the
terminal is longer than the length of the power supply wires between the fixation
point and the terminal.
▪ Cut a slit in the rubber bushing where cables enter the switch box.
▪ Attach the cables onto the outer cable jacket and NOT onto the wires.
▪ Do NOT strip the outer cable jacket lower than the fixation point.