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Electrical connection diagram
For more details, please check the unit wiring.
Power supply
Only for normal power supply installation
1
5 or 3 core
unit power supply: 400 V or 230 V + earth
Only for preferential kWh rate power supply installation
1
unit preferential kWh rate power supply:
5 or 3 core
400 V or 230 V + earth
2 core
normal kWh rate power supply for indoor unit: 230 V
2 core
2x0.75
2
Field supply
2
Safety thermostat
3 core
backup heater power supply (3 kW): 230 V + earth
Field supply
Safety thermostat
Field supply
Power limitation
demand input 1
Power limitation
demand input 2
Power limitation
demand input 3
Power limitation
demand input 4
EHVZ04~16S18CB3V
Daikin Altherma – Low temperature split
4P401672-1E – 2018.02
Standard part
Outdoor unit
X1M: L1-L2-L3-N-earth
or L-N-earth
Bottom plate heater
X1Y: 1-2
Only for *KBPHT*
& depending on model
X1M: 1-2-3
2 core
3 core
2x0.75
Indoor unit
X1M: 1-2-3
A4P:Y2
X2M:29
X2M: 30-31
X5M: 3-4
F1B: L-N + earth
ext. heat source output
2 core
X5M: 11-12
signal
2
2
Only for *KRP1AHTA
2 core
A8P: X801M: 1-5
add: X2M: 1a-2a-3-4
signal
2 core
2
A8P: X801M: 2-5
signal
2 core
A8P: X801M: 3-5
signal
2 core
A8P: X801M: 4-5
signal
Notes:
- In case of signal cable: keep minimum distance to power cables > 5 cm
Field supply
Only for *KRP1HB*
A4P: Y1
2 core
X2M: 29
alarm indication
Alarm output
230 V
A4P: X1-X2
2 core
Changeover to
Ext. heat source (eg boiler)
signal
A4P: Y2
2 core
Cooling/heating
X2M: 29
On/OFF output
Cooling/heating
230 V
On/OFF output
2 core
X2M: 34-35
Circulation pump for DHW
230 V
2way valve
2 core
NO valve: X2M: 6-7
M2S (*KHBX units) for cooling mode
NC valve: X2M: 5-7
230 V
2 core
X5M: 7-8
Electricity meter pulse input 1
signal
2 core
X5M: 9-10
Electricity meter pulse input 2
signal
Only for KRCS01-1 or EKRSCA1
2 core
X5M: 5-6
external thermistor (indoor or outdoor)
signal
External room thermostat / Heat pump convector
(main and/or additional zone)
3 core for C/H operation
2 core for H only operation
main: X2M: 1-2-4
add: X2M: 1a-2a-4
230 V
Only for *KRTR
5 core for C/H operation
(wireless room thermostat)
4 core for H only operation
main: X2M: 1-2-3-4
A4P: X1M: H-C-com
X2M: L-N
230 V
2 core
main: X2M: 1-4
add: X2M: 1a-4
230 V
2 core
2x0.75
X5M: 1-2
communication
2 core
2x0.75
communication
8 Technical data
Only for *KRTW
(wired room thermostat)
A3P: X1M: C-com-H
2 core
(3m included)
A3P: X1M: 1-3
signal
Only for
(heat pump convector)
X11M : 5-6
Standard part
A2P: P1-P2 user interface
Optional part
Only for *KRUCBL*
A2P: P1-P2 user interface
Installation manual
Optional part
Only for *KRTETS
R2T
External sensor
(floor or ambient)
4D096036A
25
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