To Connect The Transmission Wiring; To Finish The Transmission Wiring; To Route And Fix The Power Supply; To Connect The Power Supply - Daikin RXYLQ10T7Y1B Series Installation And Operation Manual

a b
d
c
Fix to the indicated plastic brackets using field supplied clamping
material.
a Wiring between the units (indoor-outdoor) (F1/F2 left)
b Internal transmission wiring (Q1/Q2)
c Plastic bracket
d Field supplied clamps
15.5

To connect the transmission wiring

The wiring from the indoor units must be connected to the F1/F2
(In‑Out) terminals on the PCB in the outdoor unit.
Tightening torque for the transmission wiring terminal screws:
Screw size
M3.5 (A1P)
In case of single outdoor unit installation
A1P
F F F F Q Q F1 F2 F1 F2 Q1 Q2
1 2 1 2 1 2
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
e
a
F1 F2 F1 F2
b
c
F1 F2 F1 F2
a Outdoor unit PCB (A1P)
b Use the conductor of sheathed wire (2 wire) (no polarity)
c Terminal board (field supply)
d Indoor unit
e Outdoor unit
In case of multi outdoor unit installation
a b
A1P
F1 F2 F1 F2 Q1 Q2 Q1 Q2
e f d
a Unit A (master outdoor unit)
b Unit B (slave outdoor unit)
c Unit C (slave outdoor unit)
d Master/slave transmission (Q1/Q2)
e Outdoor/indoor transmission (F1/F2)
f Outdoor unit/other system transmission (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.
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1B – 2020.10
Tightening torque (N•m)
0.8~0.96
d
F1 F2
F1 F2
c
Q1 Q2
d
15 Electrical installation
▪ 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.
15.6

To finish the transmission wiring

After installing the transmission wires inside the unit, wrap them
along with the on-site refrigerant pipes using finishing tape, as
shown in figure below.
a c b e d
a Liquid pipe
b Gas pipe
c Insulator
d Transmission wiring (F1/F2)
e Finishing tape
15.7

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.
X1M
d
A
d
c b a
a Power supply (possibility 1)
b Power supply (possibility 2)
c Power supply (possibility 3)
d Tie wrap
(a) Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
15.8

To connect the power supply

The power supply MUST be clamped to the plastic 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.
A
(a)
(a)
(a)
. Use conduit.
Installation and operation manual
29