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10 Technical data
Electrical connection diagram
For more details, please check the unit wiring.
Power supply
outdoor unit power supply:
3 core
230 V + earth
indoor unit power supply:
3 core
230 V + earth
FIELD SUPPLY
1
Preferential kWh rate
power supply contact
1
Only for LV smartgrid
Smartgrid contact S10S
2 core
Optional part
2x0.75
1
Only for HV smartgrid
signal
Smartgrid contact K1A
2 core
2x0.75
Smartgrid relais K1A
2 core
2x0.75
Smartgrid relais K2A
3 core
HV smartgrid control supply: 230 V
FIELD SUPPLY
2 core
2
2x0.75
Safety thermostat Q4L
5 or 3
backup heater power supply (3/6/9 kW):
core
400 V or 230 V + earth
(F1B)
OPTIONAL PART
(WLAN adapter module)
5 core
A20P: J2
communication
(BZ mixing kit)
3 core
A30P: ST6
communication
FIELD SUPPLY
2 core
Power limitation
demand input 1
signal
2 core
Power limitation
demand input 2
signal
2 core
Power limitation
demand input 3
signal
2 core
Power limitation
demand input 4
signal
Installation manual
44
STANDARD PART
OUTDOOR UNIT
X1M: L-N-earth
X1M: 1-2-3-earth
4 core
INDOOR UNIT
X1M: 1-2-3-earth
Alarm output
X1M: 4-5-6
Changeover to
X15M: 3-4
ext. heat source output
Cooling/heating
On/OFF output
X12M: 23-25
X15M: 13-14
X12M: 24-25
X15M: 7
X12M: 11-12
2
X15M: 8
NO valve: X12M: 14-18
NC valve: X12M: 13-18
X15M: 7-8
X6M: L-N + earth
X15M: 9-10
or L1-L2-L3-N + earth
A11P: X5: 4-5
A11P: X9: 1-2-3
3
A11P: X3: 2-3-4
main: X12M: 15-16-22
add: X12M: 19-20-22
3
Only for *KRP1AHTA
main: X12M: 15-16-21-22
add: X12M: 19-20-21-22
A8P: X801M: 1-5
3
main: X12M: 15-22
A8P: X801M: 2-5
add: X12M: 19-22
main & add: X12M: 9-10
A8P: X801M: 3-5
X15M: 11-12
A8P: X801M: 4-5
Notes:
- In case of signal cable: keep minimum distance to power cables > 5 cm
FIELD SUPPLY
2 core
X12M: 1-2
Alarm indication
230 V
X12M: 3-4
2 core
Ext. heat source (eg boiler)
signal
X12M: 5-6
2 core
Cooling/heating
On/OFF output
230 V
2 core
Solar input
signal
2 core
X12M: 7-8
Circulation pump for DHW
230 V
2 core
DHW output
230 V
2WAY VALVE
2 core
M4S for cooling mode
230 V
2 core
X15M: 5-6
Electricity meter pulse input 1
signal
Only for HV smartgrid
Smartgrid contact K2A
Only for LV smartgrid
Smartgrid contact S11S
2 core
Electricity meter pulse input 2
signal
Smartgrid pulse meter
Gas meter pulse input
Only for KRCS01-1 or EKRSCA1
2 core
X15M: 1-2
External thermistor (indoor or outdoor)
signal
EXTERNAL ROOM THERMOSTAT / HEAT PUMP CONVECTOR
(main and/or additional zone)
Only for *KRTW
3 core for C/H operation
(wired room thermostat)
2 core for H only operation
A2P: X1M: C-com-H
signal
Only for *KRTR
5 core for C/H operation
(wireless room thermostat)
4 core for H only operation
A15P: X1M: H-C-com
X2M: L-N
signal
Only for
(heat pump convector)
4 core
A3P
signal
A14P: P1-P2 user interface
communication
2 core
2x0.75
A13P: P1-P2 user interface
communication
4
4
4
5
5
5
OPTIONAL PART
2 core
Only for *KRTETS
(3m included)
R2T
A2P: X1M: 1-3
External sensor
6
signal
(floor or ambient)
only for EKRTR1
A2P: X1M: 1-2
6
only for EKRTRB
Only for remote
user interface
Only for LAN adapter
4D132247 B
ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679468-1B – 2022.09
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