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Electrical characteristics
Model
Hz
Volts
35
50
60
71
50/60
220-240/220
100
125
140
MCA: Min. circuit Amps (A)
MFA: Max. Fuse Amps (A)
For details, refer to "Electrical data" in the technical
NOTE
data book.
Specifications for field wire
Wire
Between
H05VV-U4G
indoor units
Unit-Remote
Sheathed wire
controller
(2 wire)
(a) Shows only in case of protected pipes. Use H07RN-F in case of no protection.
(b) Run transmission wiring between the indoor and outdoor units through a conduit
to protect against external forces, and feed the conduit through the wall together
with refrigerant piping.
(c) Use double insulation wire for remote controller (sheath thickness: ≥1 mm) or run
wires through a wall or conduit so that the user cannot come in contact with them.
(d) This length shall be the total extended length in the system of the group control.
Wiring example and how to set the remote
controller
How to connect wiring
Remove the switch box cover as shown in
connections.
1
Switch box cover
2
Switch box low voltage wiring inlet
3
Switch box high voltage wiring inlet
4
Wiring diagram
5
Switch box
Precautions
1.
Observe the notes mentioned below when wiring to the power
supply terminal board.
•
Use a round crimp-style terminal for insulation sleeve for
connection to the terminal block for wiring the units. When
none are available, follow the instructions below.
1
2
3
•
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
•
When connecting wires of the same gauge, connect them
according to the figure.
7
Power supply
Voltage
range
MCA
0.8
0.8
0.7
±10%
0.7
1.3
1.9
1.9
2
Size (mm
)
Length
(a),(b)
2.5
0.75–1.25
Max. 500 m
(c)
figure
13, and make the
1
Round crimp-style terminal
2
Attach insulation sleeve
3
Wiring
Use the specified electric wire. Connect the wire securely to
the terminal. Lock the wire down without applying excessive
force to the terminal. Use torques according to the table below.
MFA
Terminal block for remote controller
Terminal block for power supply
•
When attaching the control box lid, make sure not to pinch
16 A
any wires.
•
After all wiring connections are done, fill in any gaps in the
casing wiring holes with putty or insulation material (field
supply) thus to prevent small animals or dirt from entering the
unit from outside and causing short circuits in the control box.
2.
Do not connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.
3.
Remote controller cords and wires connecting the units should
be located at least 50 mm away from power supply wiring. Not
following this guideline may result in malfunction due to
electrical noise.
4.
For the remote controller wiring, refer to the "Installation manual
of the remote controller" supplied with the remote controller.
The customer has the ability to select the remote
NOTE
—
controller thermistor.
(d)
5.
Never connect the power supply wiring to the terminal board for
transmission wiring. This mistake could damage the entire
system.
6.
Use only specified wires and tightly connect wires to the terminals.
Be careful that wires do not place external stress on the terminals.
Keep wiring in neat order so that they do not obstruct other
equipment such as popping open the switch box cover. Make sure
the cover closes tight. Incomplete connections could result in
overheating, and in the worse case, electric shock or fire.
Keep total current of crossover wiring between indoor units less than
12 A. Branch the line outside the terminal block of the unit in
accordance with the electrical equipment standards, when using two
power wiring of a gauge greater than 2 mm
The branch must be sheathed in order to provide an equal or greater
degree of insulation as power supply wiring itself.
Tightening torque (N•m)
2
(Ø1.6).
0.79~0.97
1.18~1.44
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