To Finish The Interconnection Wiring; To Route And Fix The Power Supply; To Connect The Power Supply - Daikin VRV 5 RXYA8A7Y1B Installation And Operation Manual

c Indoor unit
d Outdoor unit/other system interconnection (F1/F2)
▪ The interconnecting wiring between the outdoor units in the same
piping system must be connected to the Q1/Q2 (Out Multi)
terminals. Connecting the wires to the F1/F2 terminals results in
system malfunction.
▪ The wiring for the other systems must be connected to the F1/F2
(Out-Out) terminals of the PCB in the outdoor unit to which the
interconnecting wiring for the indoor units is connected.
▪ The base unit is the outdoor unit to which the interconnecting
wiring for the indoor units is connected.
Tightening torque for the interconnection wiring terminal screws:
Screw size
M3.5 (A1P)
17.6 To finish the interconnection
wiring
After installing the interconnection wiring, wrap it along with the
onsite refrigerant piping using finishing tape, as shown in the
illustration below.
a
f
b
c
d e
a Liquid piping
b Gas piping
c Equalising piping
d Finishing tape
e Interconnection cable (F1/F2)
f Insulation
17.7

To route and fix the power supply

NOTICE
When routing earth wires, secure clearance of 25 mm or
more away from compressor lead wires. Failure to observe
this instruction properly may adversely affect correct
operation of other units connected to the same earth.
The power supply wiring can be routed from the front and left side.
Fix it to the lower mounting hole.
5~12 HP
X1M
d
A
d
c
A
b a
a Power supply (possibility 1)
b Power supply (possibility 2)
c Power supply (possibility 3)
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P739915-1 – 2023.12
Tightening torque [N•m]
0.8~0.96
a
d
14~20 HP
X1M
A
c
d
b a
(a)
(a)
(a)
. Use conduit.
d Tie wrap
(a)
Knockout hole has to be removed. Close the hole to
avoid small animals or dirt from entering.
17.8

To connect the power supply

The power supply MUST be clamped to the bracket using field
supplied clamp material to prevent external force being applied to
the terminal. The green and yellow striped wire MUST be used for
earthing only.
See "17.2 Specifications of standard wiring
wiring requirements.
5~12 HP
c b d
a
14~20 HP
a c b d
a Power supply (380~415 V, 3N~ 50 Hz)
b Fuse
c Earth leakage protector
d Earth wire
e Power supply terminal block
f Connect each power wire: RED to L1, WHT to L2, BLK to
L3 and BLU to N
g Earth wire (GRN/YLW)
h Tie wrap
i Cup washer
j When connecting the earth wire, it is recommended to
perform curling.
NOTICE
Never connect the power supply to transmission wiring
terminal block. Otherwise the entire system may break
down.
CAUTION
▪ When connecting the power supply: connect the earth
cable first,
d
connections.
▪ When disconnecting the power supply: disconnect the
current-carrying cables first, before separating the earth
connection.
▪ The length of the conductors between the power supply
stress relief and the terminal block itself MUST be as
such that the current-carrying wires are tautened before
the earth wire is in case the power supply is pulled
d
loose from the stress relief.
Tightening torque for the terminal screws:
Screw size
M8 (power terminal block)
M8 (ground)
17 Electrical installation
components" [ 4 41] for
before making the current-carrying
Tightening torque (N•m)
5.5~7.3
Installation and operation manual
e
f
g
i
j
h
e
f
g
i
j
h
43