To Connect The Transmission Wiring; To Finish The Transmission Wiring; To Route And Fix The Power Supply - Daikin RWEYQ8T9Y1B Installation And Operation Manual

A
Fix to the indicated plastic brackets (factory installed).
5.8.3

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 heat recovery mode
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
d
F1 F2 F1 F2 Q1Q2
a b
A1P A1P
F F F F Q Q Q Q
1 2 1 2 1 2 1 2
e e
g
a Unit A (master outdoor unit)
b Unit B (slave outdoor unit)
c Unit C (slave outdoor unit)
d Outdoor unit PCB (A1P)
e Master/slave transmission (Q1/Q2)
f Outdoor/indoor transmission (F1/F2)
g Outdoor unit/other system transmission (F1/F2)
h BS unit
i Indoor unit
j Cooling-only VRV indoor unit / Heating-only Hydrobox unit
RWEYQ8~14T9V1B+RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1A – 2017.04
A
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
F1 F2 F1 F2 Q1 Q2
A1P
Tightening torque (N•m)
0.8~0.96
f
F1 F2 F1 F2 F1 F2 F1 F2
TO IN/D TO OUT/D TO IN/D TO OUT/D
UNIT UNIT UNIT UNIT
h h
c
A1P
Q Q
1 2
F1 F2 F1 F2 F1 F2 F1 F2
i i
j
F1 F2 F1 F2
In case of heat pump mode
b c d
A1P
F1 F2 F1 F2 Q1 Q2 Q1 Q2 Q1 Q2
e f f
e
F1 F2 F1 F2
h
i
F1 F2 F1 F2
a Outdoor unit PCB (A1P)
b Unit A (master outdoor unit)
c Unit B (slave outdoor unit)
d Unit C (slave outdoor unit)
e Outdoor unit/other system transmission (F1/F2)
f Outdoor-outdoor unit transmission (Q1/Q2)
g Indoor unit
h Use the conductor of sheathed wire (2 wire) (no polarity)
i Terminal board (field supply)
▪ 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.
5.8.4

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.
c
f
b
d
f
a
e
f
a Liquid pipe
b Gas pipe
c Finishing tape
d High pressure/low pressure gas pipe
e Transmission wiring (F1/F2)
f Insulator
5.8.5

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 side. Exit the
wiring via the upper mounting hole.
5 Installation
F1 F2 F1 F2 Q1 Q2
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
g a
F1 F2
F1 F2
Installation and operation manual
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