39
RT1
POWER
IN
Room thermostat type2 (Low voltage):
30
29
32
25
26
27
28
31
7
12
11
10
9
18
8
7
5
23
22
24
1
2
13
3
4
6
20
14
15
17
19
16
21
6
8
9
10
5
4
3
2
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11
CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL
COM
HT
EVU
SG
Method A
CL
HT
COM
CL
HT
COM
RT1
POWER IN
RT2
POWER IN
30
29
32
25
26
27
28
31
7
12
11
10
9
18
8
7
5
23
22
24
1
2
13
3
4
6
20
14
15
17
19
16
21
6
8
9
10
5
4
3
2
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11
CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL
COM
HT
EVU
SG
Method C
There are three methods for connecting the thermostat cable
(as described in the picture above) and it depends on the
application.
Method A
RT can control heating and cooling individually, like the
controller for 4-pipe FCU. When the indoor unit is connected
with the external temperature controller, user interface FOR
SERVICEMAN set ROOM THERMOSTAT to MODE SET
：
A.1 When unit detect voltage is 12VDC between CL and COM
,the unit operates in the cooling mode.
A.2 When unit detect voltage is 12VDC between HT and COM,
the unit operates in the heating mode.
A.3 When unit detect voltage is 0VDC for both side(CL-COM,
HT-COM) the unit stop working for space heating or cooling.
A.4 When unit detect voltage is 12VDC for both side(CL-COM,
HT-COM) the unit working in cooling mode.
Method B
RT provide the switch signal to unit. User interface FOR
SERVICEMAN set ROOM THERMOSTAT to ONE ZONE
：
B.1 When unit detect voltage is 12VDC between HT and COM,
unit turns on.
B.2 When unit detect voltage is 0VDC between HT and COM,
unit turns off.
RT1
POWER
IN
30
29
32
25
26
27
28
31
7
12
11
10
9
18
8
7
5
23
22
24
1
2
13
3
4
6
20
14
15
17
19
16
21
6
8
9
10
5
4
3
2
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11
CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL
COM
HT
EVU
SG
Method B
HT
COM
Method C
Indoor unit is connected with two room thermostat, while user
interface FOR SERVICEMAN set ROOM THERMOSTAT to
DOUBLE ZONE:
C.1 When unit detect voltage is 12VDC between HT and COM
,zone1 turn on.When unit detect voltage is 0VDC between HT
and COM, zone1 turn off.
（
Mode set control
）
（
One zone control
）
（
Double zone control
）
zone1
zone2
（
Mode set control
）
（
One zone control
）
（
Double zone control
）
CN32
SW9
CN32
SW9
CN32
SW9
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 source.
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
�
�
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
�
�
����
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
�
�
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.
117
116
Summary of Contents for KMK-100RY1
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