Specifications

RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
Installation and operation manual
27
12.7. Connection
This chapter gives an explanation how to route and connect the
wiring within the unit.
12.7.1. Connection of transmission wiring to the system
In case of single outdoor unit installation
1 Outdoor unit PCB board (A1P)
2 Use the conductor of sheathed wire (2 wire) (no polarity)
3 Terminal board (field supply)
4 Indoor unit
5 Outdoor unit
In case of multi outdoor unit installation
1 Unit A (master unit)
2 Unit B (slave unit)
3 Unit C (slave unit)
4 Inter unit transmission wiring (Q1/Q2)
5 Outdoor-indoor unit transmission (F1/F2)
6 Outdoor-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)
(4) 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) (6) terminals of the PCB board 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.
12.7.2. Connection of wiring to terminals
Transmission wiring in outdoor unit
1 Fix to the indicated plastic brackets using field supplied
clamping material
2 Wiring between the units (indoor-outdoor) (F1/F2 left)
3 Internal transmission wiring (Q1/Q2)
4 Plastic bracket
5 Field supplied clamps
Care should be taken for connecting the wires to the terminal block.
See the table below for the tightening torque of the transmission
wiring terminals.
 Never connect the power supply to transmission wiring terminal
block. Otherwise the entire system may break down.
 Be careful about polarity of the transmission wiring.
Power supply
The power supply must be clamped to the plastic bracket using field
supplied clamp material.
The green and yellow striped wire must be used for earthing only
(refer to the figure below).
1 Power supply (380~415 V - 3N~ 50Hz)
2 Fuse
3 Earth leakage protector
4 Earth wire
5 Power supply terminal block
6 Connect each power wire: RED to L1, WHT to L2, BLK to
L3 and BLU to N
F1 F2 F1 F2 Q1 Q2
F1 F1F2 F2 Q1 Q2
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
2
3
14
5
TO IN/D UNIT
TO OUT/D UNIT TO MULTI UNIT
A1P
F1 F2 F1 F2 Q1 Q2 Q1 Q2
A1P
445
6
213
Q1 Q2
Screw size Tightening torque (N•m)
M3.5 (A1P) 0.80~0.96
L1 L2 L3 N
1
4
5
4
5
5
5
4
4
2 3 2 3
1
23 4
6
7
5
10
11
8
9
1
23 4
6
7
5
10
11
8
9
RXYQQ14~20
RXYQQ8~12