Voltage
Maximum running current(A)
Wiring size(mm
)
2
Control port signal type
10) For outside circulation pump P_o:
10
22
CN11
Power supply
7 5 3 1
A1
A2
KM2
8
6
4
2
Voltage
Maximum running current(A)
Wiring size(mm
)
2
Control port signal type
a) Procedure
Connect the cable to the appropriate terminals as shown in
the picture.
Fix the cable with cable ties to the cable tie mountings to
ensure stress relief.
11) For backup heater:
For standard indoor unit ETHKH06A, ETHKH10A and
ETHKH16A there is no internal backup heater inside the
indoor unit, but the indoor unit can be connected to an
external backup heater, as described in the picture below.
Voltage
Maximum running current(A)
Wiring size(mm
)
2
Control port signal type
220-240VAC
0.2
0.75
Type 1
25 26
27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7
CN30
220-240VAC
0.2
0.75
Type 2
220-240VAC
0.2
0.75
Type 2
41
14
17
CN11
Power supply
7 5 3 1
A1
A2
KM5
8
6
4
2
TCO
ATCO
12) For smart grid:
The unit has smart grid function, there are two ports on PCB to
connect SG signal and EVU signal as following:
25 26
27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7
CN30
V.2