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ELECTRIC WIRING
Heat recovery system
Outdoor unit power source
1
ELB
2
CB
3
S
4
Outdoor
unit C
5
7
10.3.2 Cable sizes and main breaker switch
Field minimum recommended wire sizes for power source and transmission and minimum main switches and protections sizes.
model
Power supply
RAS-8FSXNSE
RAS-10FSXNSE
RAS-12FSXNSE
RAS-14FSXNSE
RAS-16FSXNSE
3N~ 400V/50Hz
RAS-18FSXNSE
RAS-20FSXNSE
RAS-22FSXNSE
RAS-24FSXNSE
RAS-5FSXNPE
RAS-6FSXNPE
RAS-8FSXNPE
RAS-10FSXNPE
3N~ 400V/50Hz
RAS-12FSXNPE
RAS-14FSXNPE
RAS-16FSXNPE
RAS-18FSXNPE
* Refer to the NOTES for selection of the power source cable size.
The cross-sections of the cable should be selected for the maximum current of the unit, in accordance with European Standard
(1)
EN60335-1.
38
PMML0479 rev.4 - 11/2018
3N~400V 50 Hz
1
1
ELB
ELB
2
2
CB
CB
3
3
S
S
4
4
Outdoor
Outdoor
unit B
5
unit A
5
7
Power source
maximum
cable size
running
en60335-1
current (a)
*1 (mm
15.5
21.5
24.0
29.5
33.0
37.5
44.5
45.0
53.0
11.5
12.0
15.0
19.0
23.0
28.0
33.0
34.5
1
ELB (Earth leakage breaker)
CB (Circuit breaker)
2
S (Main switch)
3
Power source wiring (OU)
4
Earth wiring (OU)
5
Transmission wiring (OU ~IU)
6
Transmission wiring (OU ~OU)
7
8
Transmission wiring (CH-Box - CH-Box)
Transmission wiring (IU - CH-Box)
9
10
Power source wiring (IU - CH-Box)
11
Earth wiring (IU - CH-Box)
Indoor unit side
6
9
10
10
S
CB
Indoor
ELB
Indoor unit, CH-Box power source
1N~230V 50 Hz
transmitting
cable size
en60335-1
(1)
)
*1 (mm
)
2
2
4.0
0.75
6.0
0.75
6.0
0.75
6.0
0.75
6.0
0.75
10.0
0.75
10.0
0.75
10.0
0.75
10.0
0.75
2.5
0.75
2.5
0.75
4.0
0.75
4.0
0.75
6.0
0.75
6.0
0.75
10.0
0.75
10.0
0.75
8
8
9
11
11
CH
CH
10
10
10
10
Indoor
unit
11
unit
11
main switch
elB
(poles / m /
nominal current
(1)
ma)
(a)
20
25
25
4/40/30
32
40
40
50
4/63/30
50
63
30
30
30
60
4/40/30
60
60
60
60
CB
(a)
20
25
25
30
35
40
50
50
63
15
15
20
20
25
30
40
40
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