Specifications

237
2.5.5 Electrical wiring
(b) Indoor unit power supply
FDCP224HKXRE2A
224HKXRE2V
FDCP280HKXRE2A
280HKXRE2V
2.0/2.0 37/37 2.0/2.0 20/20 20A30mA 0.1sec or less
Item
1-phase
220/240V
50Hz
Power supply
wiring thickness
(mm
2
)
Wire
length
(m)
Power
supply
Between outdoor
and indoor units
Between
indoor units
2 core ×
0.75 ~ 2.0
2 core ×
0.75 ~ 2.0
Signal wire thikness (mm
2
) Short-circuit breaker
(Use for both pround/
overload and short-
circuit production)
Wire circuit
breaker
rated current
(A)
Thickness of
power supply
wire between
indoorunits
(mm
2
)
20/20
Circuit
Breaker
Switch
luse
capacity
(A)
Supported
outdoor model
(a) Outdoor unit power supply (A separate power supply is used for the indoor unit)
FDCP224HKXRE2A
224HKXRE2V
FDCP280HKXRE2A
280HKXRE2V
5.5/5.5
8.0/8.0
Item
Model
3-phase
380V 50Hz
415V 50Hz
Power supply
wiring thickness
(mm
2
)
46/54
47/58
40A100mA 0.1sec or less
50A100mA 0.1sec or less
Rated current
40/40
60/60
Switch capacity
30/30
50/50
Wire
length
(m)
Power
supply
Wire circuit breaker (A)
Thickness
(mm
2
)
Screw type
M65.5/5.5
Ground wire Short-circuit breaker
(Use for both pround/
overload and short-
circuit production)
(1) Power supply wiring
(c) Flow divide controller (Same power supply with the indoor units)
HPFD01R-E
HPFD02R-E
HPFD04R-E
HPFD06R-E
2.0/2.0 × 2
Item
1phase
220/240V 50Hz
Power supply
wiring thickness
(mm
2
× number of wires)
Signal wire thickness
(mm
2
× number of wires)
Power supply
2.0 × 3
Supported model
Exterior tape
Use insulation material with good resistance heat properties (120 ˚C or more).
Gas Piping
Liquid piping
Wires for connecting indoor
and outdoor units
Insulation
Following precautions must be observed when the model is adapted to R407C.
(1) Tools and related components should be changed when handling a different kind of refrigerant in order to prevent mixing of different oils.
Gauge manifold and charge hose, particularly, should never be used after using them for R22.
(2)
Charge cylinder should not be used. Otherwise, the refrigerant composition may change when charging R407C into the cylinder.
(3)
Refrigerant should be charged in the liquid phase from the container. Charging the refrigerant in the gaseous phase could change the
refrigerant composition substantially.
(4) Volume of refrigerant to be taken out in the liquid phase from the container should be up to 90% of necessary quantity (in weight percent)
as a standard.
(5) Refrigerant should not be replenished even if a leakage is discovered because it could change the refrigerant composition substantially.
When a leakage is discovered, replace with new refrigerant in the specified volume. However, it could be replenished temporarily in case of
an emergency.
(7) Heat insulation
(i) There is a need to insulate both gas and liquid piping with heat insulation for protection against heat and condensation.
1) Always use heat insulation to prevent condensation on the gas piping from becoming drain water and causing leakage
during cooling and to prevent people from being burned by the high temperature of the surface of the gas piping as
discharge gas flows through it.
2) Use heat insulation (pipe cover) on the flare connection sections of the indoor unit.
(Insulate both the gas and liquid piping.)
3) Insulate both the gas and liquid piping. Apply the insulation so that is tight against the piping and free of gaps. Route
the connecting wires with the insulation and wrap the entire bundle with exterior tape.