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5 Installation
Installation manual
33
RWEQ96~432TAYD
∗
+ RWEQ96~432TATJ
∗
VRV W T-Series water-cooled system air conditioner
5 .8 .4
To route and fix the transmission wiring
Transmission wiring can be routed through the front side only. Fix it
to the upper mounting hole.
A1P
F1
F1
F2
F2 Q1 Q2
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
A
A
Fix to the indicated plastic brackets (factory installed).
5 .8 .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 outside unit.
Tightening torque for the transmission wiring terminal screws:
Screw size
Tightening torque
M3.5 (A1P)
0.59~0.71 ft·lbf (0.8~0.97 N·m)
In case of heat recovery mode
F
1
F
2
F
1
F
2
Q
1
Q
2
F1
F1
F2
F2 Q1Q2
g
e
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
A1P
Q
1
Q
2
A1P
Q
1
Q
2
A1P
a
b
c
d
f
F1 F2F1 F2
F1 F2F1 F2
TO IN/D
UNIT
TO OUT/D
UNIT
TO IN/D
UNIT
TO OUT/D
UNIT
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
j
i
i
h
h
e
a
Unit A (main outside unit)
b
Unit B (sub outside unit)
c
Unit C (sub outside unit)
d
Outside unit PCB (A1P)
e
Main/sub transmission (Q1/Q2)
f
Outside/indoor transmission (F1/F2)
g
Outside unit/other system transmission (F1/F2)
h
Branch selector unit
i
Indoor unit
j
Cooling-only VRV indoor unit
In case of heat pump mode
F1
F1
F2
F2 Q1 Q2
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2 F1 F2 Q1Q2
Q1 Q2
A1P
e
Q1 Q2
a
h
i
g
f
c
b
d
e
f
a
Outside unit PCB (A1P)
b
Unit A (main outside unit)
c
Unit B (sub outside unit)
d
Unit C (sub outside unit)
e
Outside unit/other system transmission (F1/F2)
f
Outside-outside 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 outside 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 outside unit to which the
interconnecting wiring for the indoor units is connected.
▪ The base unit is the outside unit to which the interconnecting
wiring for the indoor units is connected.
5 .8 .6
To route and fix the power supply
NOTE
When routing ground wires, secure clearance of 1 inch
(25.4 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 ground.
01_EN_4P602454-1C.indd 33
2020/07/29 16:16:49