5.
ELECTRIC
W
IRIN
G W
OR
K
G
eneral instru
c
tions
All field wiring and components must be installed by a licensed
electrician and must comply with relevant European and national
regulations.
Use copper wire only.
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
Be sure to ground the air conditioner.
Do not connect the ground wire to gas pipes, water pipes,
lightning rods, or telephone ground wires.
-
Gas pipes: might cause explosions or fire if gas leaks.
-
.
-
T
.
Water pipes: no grounding effect if hard vinyl piping is used
elephone ground wires or lightning rods: might cause
abnormally high electric potential in the ground during
lightning storms
Follow the 'Wiring diagram' attached to the unit body to wire the
outdoor unit, indoor units and the remote controller.
The spe
c
i
f
i
c
ation o
f
po
w
er
Minimum nominal cross-sectional
area of conductors:
Rated current
of appliance
(A)
Nominal cross-sectional
area
(mm2)
<6
0.75
>6 and <10
1.0
>10 and <16
1.5
>16 and <25
2.5
>25 and <32
4.0
>32 and <45
6.0
>45 and <60
10.0
NOTE:
The cable size and the current of the fuse or switch are determined by the
maximum current indicated on the nameplate which located on the side panel
of the unit. Please refer to the nameplate before selecting the cable, fuse and
switch.
INSTALLATION MANUAL
Model
INDOOR
UNIT
POWER
Phase
1-phase 1-phase
Frequency and
Voltage
220-240V, 50Hz
220-240V, 50Hz
220-240V, 50Hz
220-240V, 50Hz
POWER
WIRING (mm
2
)
3×1.0 3×1.0
CIRCUIT
BREAKER/
Fuse (A)
15/10 15/10
OUTDOOR
UNIT
POWER
Phase 1-phase
1-phase
1-phase
Frequency and
Voltage
220-240V, 50Hz
220-240V, 50Hz
220-240V, 50Hz
220-240V, 50Hz
380-420V, 50Hz
POWER
WIRING (mm
2
)
3×2.5 3×2.5 3×4.0
CIRCUIT
BREAKER/
Fuse (A)
20/16 30/20 40/30
Indoor/Outdoor Connecting
Wiring (mm
2
)
4×1.5
2×0.75 (Shielded)
2×0.75 (Shielded) 2×0.75
(Shielded) 2×0.75
(Shielded)
3×6.0
5×2.5
40/35
30/25
MUCR-12-H8
MUCR-18/24-H8
MUCR-30/36-H8
MUCR-48-H8
1-phase
3×1.0
15/10
1-phase
MUCR-48/60-H8T
1-phase
3×1.0
15/10
3-phase
74
Wiring diagrams for power and interconnection between the outdoor unit and the indoor unit:
L(L1) N(L2)
S
S
2(N)
L
N
1(L)
230 Vac
50 Hz
S(2)
N(B)
N
L
L(B)
S(1)
N(A) L(A)
S(A)
S(B)
CN2
CN1
L N
S2
S1
230 Vac
50 Hz
230 Vac
50 Hz
No use
Use shielded cable for interconnection
MUCR-12-H8
MUCR-18-H8
Note: Interconnection terminal S1 can be called P, and S2 as Q.
INDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
