Daikin VRV IV Series - To connect the electrical wiring on the heat exchanger unit

17 | Electrical installation
Installer and user reference guide
96
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
17.3 To connect the electrical wiring on the heat exchanger unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit, located at the inside of the
service cover).
▪ Make sure the electrical wiring does NOT obstruct proper reattachment of the
service cover.
1 Remove the service cover. See "15.2.3 To open the switch box cover of the
heat exchanger unit"[464].
2 Connect the transmission wiring as follows:
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
b
X2M
X2M
X2M X1M (A1P)
RKXYQ5 RDXYQ5
TO OUT/DTO IN/D
F1 F2
F1 F2
a1 a2 a2
a
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
b
a
RKXYQ8 RDXYQ8
TO OUT/DTO IN/D
F1 F2
F1 F2
8 HP5 HP
a Sheathed + shielded cable (2 wires) (no polarity)
a1, a2 Connection of shield to earth
b Terminal board (field supply)
NOTICE
Shielded cable. Using shielded cable for the transmission wiring is mandatory for
5HP, and optional for 8HP.
X2M
F1 F2
F1 F2
a1
X1M
X1M (A1P)
5 HP 8 HP
X2M
a2
F1 F2
X2M
a2
F1 F2
RKXYQ5 RDXYQ5 RKXYQ8 RDXYQ8
a1, a2 Earth (use the screw delivered as accessory)
When using shielded cable:
▪ In case of 5HP (a1 and a2): Connect the shield to the earth of the compressor
unit and the heat exchanger unit.
▪ In case of 8 HP (only a2): Connect the shield only to the earth of the heat
exchanger unit.
3 Connect the power supply as follows:
1~ 50 Hz
220-240 V
X1M
a
b
c
a Earth leakage circuit breaker
b Fuse