11 Technical data
Installation manual
42
EWAA004~008D2 + EWYA004~008D2
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688014-1A – 2022.05
Electrical connection diagram
For more details, please check the unit wiring.
4 core
2×0.75
230 V
1
3
3
X2M: 5-6
A8P: X801M: 1-5
X5M: 14
X5M: 13-14
X5M: 13
A8P: X801M: 2-5
A8P: X801M: 3-5
A8P: X801M: 4-5
A4P: Y1-YC
X2M: 7-9
A4P: X1-X2
X5M: 11-12
X5M: 15-16
X2M: 3-4-14a
X5M: 7-8
A1P: X45A
X5M: 5-6
X5M: 3-4
A4P: Y2-YC
X2M: 7-9
7
7
9
9
2×0.75
A15P: X1M: H-C-com
X2M: L-N
230 V
230 V
230 V
230 V
230 V
A2P: X1M: C-com-H
L-N-earth
A1P: X19A
A1P: X1A
4D139354 A
A11P: X1B: 3-4
A11P: X10
MMI
A11P: X1B: 1-2
X3M: 3-4-5
X3M: 1-2
X5M: 1-2
X15M: 1-2
X15M: 8-9-10
X15M: 6-7
4
(F1B)
2
2
2
X10M: 1-2
2×0.75
X10M: 3-4
2×0.75
X5M: 9-10
X1M: 1-2-3
2×0.75
230 V
5
6
5
5
8
230 V
8
6
1
- In case of signal cable: keep minimum distance to power cables >5 cm
Notes:
FIELD SUPPLY
Only for KRCS01-1 or EKRSCA1
2-way valve
signal
2 core
signal
2 core
signal
2 core
signal
2 core
Power limitation demand input 4
Power limitation demand input 3
Power limitation demand input 2
Power limitation demand input 1
FIELD SUPPLY
Only for *KRP1AHTA
Only for *KRP1HB*
FIELD SUPPLY
POWER SUPPLY
HYDRO SIDE
Cooling/heating ON/OFF output
Electricity meter pulse input 1
Smart Grid contact K2A
Electricity meter pulse input 2
Smart Grid pulse meter
External thermistor (indoor or outdoor)
M2S for cooling mode
External heat source (e.g. boiler)
Compressor power supply for hydro: 230 V
Only for normal power supply installation
Alarm indication
signal
2 core
signal
2 core
signal
2 core
signal
2 core
Flow switch
signal
2 core
2 core
2 core
2 core
3 core
R2T External sensor
(floor or ambient)
Only for *KRTETS
WLAN cartridge
Optional part for EWA*/EWYA*
signal
2 core
(3m included)
A14P: P1-P2 user interface Only for remote user Interface
Only for *KRTR (wireless room thermostat)
Only for *KRTW (wired room thermostat)
5 core for C/H operation
4 core for H only operation
3 core for C/H operation
2 core for H only operation
4 core
communication
2 core
OPTIONAL PART
OPTIONAL PART
External room thermostat / Heat pump convector (main and/or additional zone)
main: X2M: 30-31-34-35
add: X2M: 30-31-34a-35a
main: X2M: 30-34-35
add: X2M: 30-34a-35a
Cooling/heating
ON/OFF output
NO valve: X2M: 3-4
Only for EKMBHBP1 (bypass valve kit)
M4S bypass valve
3 core
Changeover to
ext. heat source output
Alarm output
F1B: 2-4-6-8 + earth
2 core
5 or 3 core
signal
400 or 230 V
Thermistor
Contactor
Clixon
3 core
2 core
2 core
X1M: L-N-earth
Normal kWh rate power supply for hydro:
Safety thermostat Q4L
Only for preferential kWh rate power supply installation
Unit power supply:
230 V + earth
230 V
COMPRESSOR SIDE
STANDARD PART
POWER SUPPLY
POWER SUPPLY
OPTIONAL PART
signal
signal
Only for high voltage Smart Grid
Only for low voltage Smart Grid
Only for high voltage Smart Grid
Smart Grid contact S11S
Only for low voltage Smart Grid
External backup heater
5 core
External backup heater power supply (3/6/9 kW):
400 V or 230 V + earth
Smart Grid contact K1A
2 core
Smart Grid relay K1A
2 core
Smart Grid relay K2A
2 core
signal
Preferential kWh rate power
supply contact
FIELD SUPPLY
OPTIONAL PART
Smart Grid contact S10S
FIELD SUPPLY
HV smartgrid control supply: 230 V
Only for *KRP1AHTA
X1M: 1-2-3
230 V
3 core
A2P: X1M: 1-3
only for EKRTR1
A2P: X1M: 1-2
only for EKRTRB
2×0.75
A13P: P1-P2 user interface Only for LAN adapter
communication
2 core
