Fujitsu R410A, Installation Manual

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En-8
Electrical requirement 21 21
CAUTION
Be sure to install a breaker of the specified capacity.
Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating
1Φ 208/230V (60Hz)
Operating range
187-264V
Cable Cable size
*1)
Remarks
Power supply cable 10AWG 2 cable + Ground, 1 Ø 208/230V
Connection cable 14AWG 3 cable + Ground, 1 Ø 208/230V
1) Selected sample: Select the correct cable type and size according to the country or
region’s regulations.
Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the
wire diameter when the wire length is long.
Breaker Specification *
2)
Circuit breaker (MOCP) *
4)
Current : 30 (A)
Earth leakage breaker Leakage current : 30mA 0.1sec or less *
3)
2) Select the appropriate breaker of the described specification according to the national
or regional standards.
3) Select the breaker that enough load current can pass through it.
4) MOCP: Maximum Over Current Protection
Unit wiring 21 21
When stripping off the coating of a lead wire, always use a special tool such as a wire •
stripper. If there is no special tool available, carefully strip the coating with a knife etc.
Power supply cable
and connection cable
30 mm (1-3/16 in.
)
50 mm (2 in.) or more
Earth wire
How to connect wiring to the terminal
Caution when wiring cable
(1) Use crimp-type terminals with insulating sleeves as shown in the figure to connect
to the terminal block.
(2) Securely clamp the crimp-type terminals to the wires using an appropriate tool so
that the wires do not come loose.
(3) Use the specified wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a
screwdriver that is too small, otherwise, the screw heads may be damaged and
prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table below for the terminal screw tightening torques.
Sleeve
Strip : 10 mm (25/64 in.) Crimp-type terminal
Wire
Screw with special washer
Crimp-type terminal
Terminal blocks
Screw with special washer
Wire
Crimp-type terminal
Tightening torque [N·m (lbf·in1)]
M4 screw 1.2 to 1.8 (10.6 to 15.9)
Connection diagrams 21 41
INDOOR
OUTSIDE
OUTDOOR UNIT
TERMINAL
TERMINAL
INDOOR UNIT A
1
2
3
1
2
3
G
G
G
Power lines
DISCONNECT SWITCH
(FIELD SUPPLY)
DISCONNECT SWITCH
(FIELD SUPPLY)
DISCONNECT SWITCH
(FIELD SUPPLY)
TERMINAL
INDOOR UNIT B
1
2
3
1
2
3
G
Grounding
line
Grounding
line
208/230 V
208/230 V
208/230 V
208/230 V
208/230 V
208/230 V
UNIT B
UNIT A
G
TERMINAL
INDOOR UNIT C
1
2
3
1
2
3
G
Grounding
line
208/230 V
208/230 V
208/230 V
UNIT C
1
2
3
UNIT D
G
L1
L2
Power supply lin
e
Single-phase, 208/230
V
(Inter-unit)
FUSE (FACTORY INSTALLED)
DISCONNECT SWITCH
(FIELD SUPPLY)
TERMINAL
INDOOR UNIT D
1
2
3
G
Grounding
line
208/230 V
208/230 V
208/230 V
WARNING
Disconnect switch for over current protection given in the table below is to be installed
between the indoor unit and the outdoor unit.
Disconnect switch
15A
CAUTION
Be sure to refer the above diagram and do correct field wiring.
Wrong wiring causes malfunction of the unit.
Check local electrical codes and also any specific wiring instructions or limitation.
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