13
GB
D
F
I
NL
E
P
GR
RU
TR
<Permissible Lengths>
1
M-NET Remote controller
•
Max length via heat source units: L
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
3
+L
5
and L
1
+L
2
+L
6
+L
7
=
500 m (1.25 mm
2
or more)
•
Max transmission cable length: L
1
and L
3
+L
4
and L
3
+L
5
and L
6
and L
2
+L
6
and L
7
=
200 m (1.25 mm
2
or more)
•
Remote controller cable length:
r
1
,
r
2
,
r
3
,
r
4
=
10 m (0.3 to 1.25 mm
2
)
If the length exceeds 10 m, use a 1.25 mm
2
shielded wire. The length of this section (L
8
) should be included in the calculation of the
maximum length and overall length.
2
MA Remote controller
•
Max length via heat source unit (M-NET cable): L
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
6
+L
7
=
500 m (1.25 mm
2
or more)
•
Max transmission cable length (M-NET cable): L
1
and L
3
+L
4
and L
6
and L
2
+L
6
and L
7
=
200 m (1.25 mm
2
or more)
•
Remote controller cable length:
c
1
+
c
2
and
c
1
+
c
2
+
c
3
+
c
4
=
200 m (0.3 to 1.25 mm
2
)
9.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example)
[Fig. 9.4.1]
(P.5)
A
Switch (Breakers for Wiring and Current Leakage)
B
Heat source Unit
C
Pull Box
D
Indoor Unit
E
Breakers for Current Leakage
Thickness of Wire for Main Power Supply and On/Off Capacities
1. Use a separate power supply for the heat source unit and indoor unit.
2. Bear in mind ambient conditions(ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.
Make sure the power-supply voltage does not drop more than 10 %.
4. Specific wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for heat source use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57).
6. A switch with at least 3 mm contact separation in each pole shall be provided by the Air conditioner installation.
Warning:
•
Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause
heating or fire.
•
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
•
Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric shock.
•
Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction
of unit or fire.
30A 100mA 0.1sec. or less
40A 100mA 0.1sec. or less
20A 30mA 0.1sec. or less
40A
40A
20A
32
40
16
32
40
16
4.0
6.0
1.5
4.0
6.0
1.5
Indoor Unit
Main Cable
Switch (A)
Minimum Wire Thickness (mm
2
)
Branch
Capacity
Fuse
Breaker for Current Leakage
Model
Heat source
Unit
P200
P250
–
–
1.5
Breaker for
Wiring (NFB)
Ground
Unit
Range
Setting Method
IC (Main)
01 to 50
Use the most recent address within the same group of indoor units
IC (Sub)
01 to 50
Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be
in sequence with the IC (Main)
Heat source Unit
51 to 100
Use the most recent address of all the indoor units plus 50
M-NET R/C (Main)
101 to 150
Set at an IC (Main) address within the same group plus 100
M-NET R/C (Sub)
151 to 200
Set at an IC (Main) address within the same group plus 150
MA R/C
–
Unnecessary address setting (Necessary main/sub setting)
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
