Wire Sizes - Hitachi FSG1 Series Technical Catalogue

Name of Dip
Unit
Switch
Refrigerant Cycle
Indoor
Unit
End Terminal
Resistance
Refrigerant Cycle
Outdoor
Unit
Indoor Unit Address

15.5 WIRE SIZES

§ Electrical Wiring Connection
Field Minimum Wire Sizes for Power Source
Model
All Indoor Units
RAS-5FSG
RAS-8FSG
RAS-10FSG
RAS-16FSG
RAS-20FSG
RAS-24FSG1
RAS-30FSG1
RAS-20FXG1
RAS-30FXG1
?
NOTE:
– Follow local codes and regulations when selecting
field wires.
– The above wire sizes marked with É are selected at
the maximum current of the unit according to the
European Standard, EN60 335-1. Use the wires which
are not lighter than the ordinary polychloroprene
sheathed flexible cord (code designation H05RN-F).
– The above wire sizes marked with Ê are selected at
the maximum current of the unit according to the wire,
MLFC (Flame Retardant Polyflex Wire) manufactured
by HITACHI Cable Ltd. Japan.
– In the case that the power cables are connected in
series, add each unit maximum current and select
wires below.
– The earth cable size complied with local code:
IEC 245, No. 571.
Setting Before
Mark
Shipment
ON
DSW1
ON
DSW10 - 1P
1 2
ON
DSW5
0
RSW
Power Source Max. Current
5 A
220-240V/1f/50Hz
18 A
32 A
36 A
63 A
380-415V/3f/50Hz 81 A
74 A
87 A
64 A
87
ELECTRICAL WIRING
Function
For setting refrigerant cycle address of outdoor unit. Set the
DSW1 not to overlap the setting of other outdoor units in the
same H-LINK system
For matching impedance of transmission circuit. Set the DSW10
according to the quantity of outdoor units in the H-LINK system.
Setting of End Terminal Resistance
Before shipment, No.1 pin of DSW10 is set at the "ON" side.
In the case that the outdoor units quantity in the same H-link is 2
or more, set No.1 pin of DSW10 at the "OFF" side from the 2nd
unit. If only one outdoor unit is used, no setting is required.
For setting refrigerant cycle address of indoor unit. Set the DSW5
corresponding to the address of outdoor unit in the same
refrigerant cycle.
For setting indoor unit address. Set the RSW not to overlap the
setting of other indoor units in the same refrigerant cycle. (If not
set, the automatic address function is performed.)
Power Source Cable Size
EN60 335-1 MLFC
É É É É Ê Ê Ê Ê
0.75 mm² 0.5 mm²
2.5 mm² 0.75 mm²
4 mm² 2 mm²
6 mm² 3.5 mm²
10 mm² 8 mm²
- 14 mm²
- 8 mm²
- 14 mm²
- 8 mm²
- 14 mm²
Selection according to
EN60 335-1
Wire Size
Current i (A)
(mm²)
I £ 6
0.75
6 < i £ 10
1
10 < i £ 16
1.5
16 < i £ 25
2.5
25 < i £ 32
4
32 < i £ 40
6
40 < i £ 63
10
Ë
63 < i
Ë
In the case that current exceeds 63 A do not connect cables in
series
15
/13
Transmitting Cable Size
EN60 335-1 MLFC
É É É É Ê Ê Ê Ê
0.75 mm² 0.5 mm²
Selection according to MLFC
(at cable Temp. Of 60 ºC)
Wire Size
Current i (A)
(mm²)
I £ 15
0.5
15 < i £ 18
0.75
18 < i £ 24
1.25
24 < i £ 34
2
34 < i £ 47
3.5
47 < i £ 62
5.5
62 < i £ 78
8
78 < i £ 112
14
112 < i £ 147
22