-
-
'13 • SRK-T-144
CAUTION
Interconnecting and
grounding wires
(minimum)
Switch breaker
Over current protector
rated capacity
Power source
(minimum)
15A, 30mA, 0.1sec or less
30A
16A
2.0mm
2
1.5mm
2
X 4
Earth leakage breaker
Phase
Single-phase
• The specifications shown in the above table are for units without heaters. For units with heaters, refer to the installation
instructions or the construction instructions of the indoor unit.
• Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
• The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three
cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these conditions, please
follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
Switchgear or Circuit Breaker
Power cable, indoor-outdoor connecting wires
• Always perform grounding system installation work with the power cord unplugged.
• Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
• In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
• Grounding terminals are provided in the control box.
N L
1 2/N 3
1 2/N 3
Safety
breaker
16A
Earth
leakage
circuit
breaker
h
t
r
a
E
h
t
r
a
E
Power supply
Indoor unit
Outdoor unit
Model SRC-ZMX-S
N L
D1 D2 D3 C
D1 D2 D3
Safety
breaker
16A
Earth
leakage
circuit
breaker
Power supply
DRED*
Outdoor unit
1 2/N 3
1 2/N 3
Indoor unit
Model SRC-ZMXA-S
C
Connecting cable between outdoor unit and DRED shall be double insulation layer, polychloroprene sheathed (>50V)
with size 4 x (0.5mm
2
to 2.0mm
2
) cable or flexible cord, where the maximum allowable length is 30m.
When wire length exceeds
30m, use 2.5mm
2
wires.
When wire length exceeds
30m, use 2.5mm
2
wires.
*Demand
response
enabling
devices
Power cable, indoor - outdoor connecting wire circuit diagram
Model SRC-ZMX-S
Model SRC-ZMXA-S
Always use an earth leakage circuit breaker designed for inverter circuits to prevent
a faulty operation.
Cable name plate
• It holds cables in place and protect the terminal connection
from external force.
• This clamp is for the cable in the outside diameter 9
~
15mm.
Please adjust it when not suitable.
• Please be sure to carry out D-type (type III) grounding work.
• It has stuck on the lid of a control box.
Grounding terminal
Power supply terminal block
Cable clamp
Indoor - Outdoor
connecting wire
Power cable
DRED cable
(Demand response
enabling devices)
• Earth wire shall
be Yellow/Green
(Y/G) in color
and longer than
other AC wires
for safety reason.
