(a) Minimum cable section AWG18 (0.75 mm
2
).
(b) If the current of the load is large, an AC contactor is needed.
1
2
3
4
5
9
Description AC/DC Required number of conductors Maximum running current
Item
DHW pump control cable
SV2: 2/3-way valve control cable
SV1: 3-way valve control cable
Booster heater control cable
Room thermostat cable
User interface cable
Solar energy kit signal cable AC
2
200mA
AC
5
200mA
AC
2
200mA(a)
AC
2
3
200mA(a)
AC 200mA(a)
AC
3
200mA(a)
AC
2
200mA(a)
6
7
8
Outside circulation pump control cable
Solar pump control cable
AC
2
200mA(a)
AC
2
200mA(a)
1
2
5
7
8
6
4
H
25
T
D
A
K
K
K
K
J
G
E
L
L
9
B
CN11 CN7 CN30
1
A
2
B
3
X
4
Y
5
E
6
P
7
Q
8
E
9
H1
10
H2
25
�����HT
29
��N
30
R1
31
DFT1
32
DFT2
26
����R2
27
AHS1
28
AHS2
1
SL1
2
SL2
3
�
C
4
TBH
5
�
N
6
1ON
7
1OFF
8
P_o
9
N
10
�
11
�
N
12
�
24
3OFF
23
N
21
N
20
IBH1
19
18
13
H
14
L1
15
N
16
P_c
17
N
22
P_s
2ON
2OFF
P_d
3ON
3
M
F
C
I
t inu ylbmessAedoCt inu ylbmessAedoC
)ylppus dlei f (pmup WHD:d_PGtinu MainA
SV2:2/3-way valve(field supply)H)ylppus dlei f ( t ik ygrene raloSB
)ylppus dlei f (knat retaw toh ci tsemod rof evlav yaw-3:1VSIeca f r e t n i r esUC
rotcatnoCK)ylppus dlei f (pmup raloS:s_PE
o
127
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