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14 Technical data
Installer reference guide
81
EWAQ+005BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492900-1 – 2017.06
Electrical connection diagram
4 or 3 cor
e
4D108909
1
1
X3M: 1-2
X3M: 5-6
X3M: 3-4
X5M: 3-4
X5M: 1-2
X5M: 5-6
X5Y
X2M: 5-6
X2M: 12-11
X2M: 13-14-15
X2M: 9-10
X1M: L-N-PE
A4P: X5A: 1-2-3
X2M: 13-15
X8M: 3-4
X8M: 1-2
X2M: 7-8
X2M: 9-10
X2M: 5-6
X2M: 3-4
X2M: 1-2
X2M: 11-12
X2M: 1a-2a
X1M: L-N-PE
A4P: X5A: 1-2-3
F1B: L1-L2-L3
X15M: 1-2
X15M: 3-4
X15M: 5-6-7
230V
2x0.75
X8M: 6-7
X8M: 6-7-10
X8M: 8-9
X2M: 20-21
X2M: 22-23
X8M: 10
X2M: 1-2-1a
X2M: 1-2-1a
X8M: 4-5
2
2
A7P: X1M: H-C-com
X2M: L-N
A3P: X1M: 1-3
230 V
2x0.75
2x0.75
230 V
A3P: X1M: C-com-H
230 V
230 V
230V
Standard part
Minichiller unit
Power supply
unit preferential kWh rate power supply:
230 V + earth
unit power supply: 230 V + earth
2 core
2 core
3 core
3 core
Field supply
Optional part
Field supply
Optional part
Option box
X4M: L-N-earth
Preferential kWh rate power supply contact
1 core
communication
communication
2 core
2 core
2 core
2 core
230V
230V
230V
Control box
External room thermostat
(main zone)
signal
signal
signal
2 or 3 core
2 core
2 core
Power limitation
demand input 4
Power limitation
demand input 3
Power limitation
demand input 2
Power limitation
demand input 1
Only for normal power supply installation
Only for preferential kWh rate power supply installation
normal kWh rate power supply for unit: 230 V
or L-N + earth
Backup heater power supply (3/6/9 kW): 400 V or 230 V + earth
Only for *KRTR
(wireless room thermostat)
Only for *KRTW
(wired room thermostat)
2 core
(3m included)
signal
R2T
External sensor
(floor or ambient)
Only for *KRTETS
External indoor thermistor
Electricity pulse
meter input 2
Electricity pulse
meter input 1
Space cooling/heating
On/OFF output
Ext. heat source (eg boiler)
Alarm Output
Only for KRCS01-1
signal
signal
signal
signal
2 core
2 core
2 core
2 core
3 core
communication
3 core
Power supply
Optional part
Only for EWYQ*
Standard: 4 low voltage wires
Optional: 5 high voltage wires
Inside: 6 or 7 wires to BUH
Valve kit: 3 wires
Standard: 4 low voltage wires
Optional: 4 high voltage wires
2 low voltage wires
Standard part
Optional part
A5P: P1-P2 user interface
A5P: P1-P2 user interface
Only for *KRUCB*
communication
2 core
communication
2 core
signal
4 core for C only operation
5 core for C/H operation
2 core for C only operation
3 core for C/H operation
Valve kit
BUH option
BUH
Valve kit
Control
Box
Control
Box
External outdoor thermistor
Only for EKRSCA1
Optional part
signal
2 core
2 core
2 core
2 core
2 core
signal
signal
2 core
signal
Control box power supply: 230 V + earth
3 core
signal
2 core
Typical configuration
Notes:
- In case of signal cable: keep minimum distance
to power cables > 5 cm
- Available heaters: see combination table
Optional
part
Shut-off valve
Field supply
2 core
14.3
Valve kit necessity
For reversible systems (cooling) in which a backup heater is installed, the installation of valve kit EKMBHBP1 is required if
condensation is expected inside the backup heater.