40
Control port signal type
Voltage
Maximum running current(A)
Wiring size(mm
2
)
Type 2
220-240VAC
0.2
0.75
The unit only sends an ON/OFF signal to the
heater.
NOTE
Control port signal type
Voltage
Maximum running current(A)
Wiring size(mm
2
)
Type 2
220-240VAC
0.2
0.75
This part only applies to Basic. For Customized, cause there
is an interval backup heater in the unit, the indoor unit
should not be connected to any additional heat sourceC
WARNING
8) For additional heat source control
：
KM6
FUSE
Power supply
7 5 3 1 A1
A2
2
4
6
8
L
N
Additional heat source
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�
20
19
18
����
CN11
1
2 3 4 5
6
7 8 9 10
CN7
CN30
27 28
1 2 3 4 5 6 7 8 9 10 1112
13 1415 1617
2122 23 24
7) For tank
booster heater
：
KM4
Power supply
7 5 3 1 A1
A2
2
4
6
8
ATCO
TCO
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CN11
25 26
1
2 3 4 5
6
7 8 9 10
CN7
CN30
27 28
29 30 31 32
13
16
NOTE
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.
C.2 When unit detect voltage is 12VDC between CL and COM,
zone2 turn on according to climate temp curve. When unit
detect voltage is 0V between CL and COM, zone2 turn off.
C.3 When HT-COM and CL-COM are detected as 0VDC, unit
turn off.
C.4 when HT-COM and CL-COM are detected as 12VDC, both
zone1 and zone2 turn on.
The wiring of the thermostat should correspond to the
settings of the user interface. Refer to
ROOM
THERMOSTAT.
Power supply of machine and room thermostat must be
connected to the same Neutral Line .
NOTE
When ROOM THERMOSTAT is not set to NON, the
indoor temperature sensor Ta can’t be set to valid
9) For defrosting signal output:
DEFROSTING PROMPT SIGNAL
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20
19
18
����
CN11
1
2 3 4 5
6
7 8 9 10
CN7
CN30
31 32
1 2 3 4 5 6 7 8 9 101112
13 1415 1617
2122 23 24
Zone 2 can only operate in heating mode, When cooling
mode is set on user interface and zone1 is OFF,“CL” in
zone2 closes, system still keeps 'OFF'. While installation,
the wiring of thermostats for zone1 and zone2 must
be correct.
