Installation manual
6
EKHWE150~3 E300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
For the Z2 models, connect as follows:
2
Make sure to ensure strain relief of the cable.
Connections to be made in the indoor unit switch box
3
Mount the prewired contactor (K3M), circuit breaker (F2B) and
terminal blocks (X3M, X4M). The contactor must be fixed with
the 2 supplied contactor screws and the terminal blocks must be
fixed with the 2x 2 supplied tapping screws.
4
Plug the connector connected to the contactor K3M in the
socket X13A on the PCB.
5
Plug the thermistor cable connector in the socket X9A on the
PCB.
6
Connect the prewired earth wires of the terminal block X3M and
X4M to the earthing screw.
7
Connect the booster heater power supply and thermal protection
cable (field supply) to terminal X4M earth, 1, 2, and X2M 13, 14.
8
Connect the booster heater power supply cable to the terminal
block X3M.
9
Fix the cables to the cable tie mountings with cable ties to
ensure strain relief.
10
Set DIP switch SS2-2 on the PCB to ON.
11
When routing out cables, make sure that these do not obstruct
mounting of the indoor unit cover.
Note: only relevant field wiring is shown.
C
OMMISSIONING
Before putting power to the unit, make sure:
■
the unit is filled with water,
■
the sensor of the thermistor cable is mounted correctly in the
thermistor socket,
■
a pressure relief valve is installed.
Check the operation of the 3-way valve: make sure that when the
indoor unit is in domestic water mode it sends hot water to the tank;
when it is in room heating mode, it sends water to the room (feel the
tubes by hand).
YLW
Yellow
BRN
Brown
GRN
Green
BLU
Blue
Can become hot
EKHB
19
20
P1
P2
14
13
1
2
YLW/GRN
BLU
BRN
YLW/GRN
P
19
20
19 20
19 20
2 1
13 14
2 1
13 14
X2M
X2M
X4M
EKHB
EKSOLHW
X10M
X9M
A4P
K6M
F2B
3M
K7M
2
1
X4M
4a
OPTIONAL
X2M
21
20
Q2L
3-way valve
2-way valve
12
11
4
thermostat
2
1
3
5
6
7
8
9
10
13
19
thermal
fuse
14
15
16
17
18
SOLAR PUMP
N
L
L2
L1
X3M (230V)
F1B
TR1
TR1
A1P
A1P
X2M
X1M
K5M
K2M
K1M
K1M
K2M
K5M
K4M
1
2
3
L1
L2
L3
N
15a
K3M
X9A
X13A
1 2
4
2
3
X4M
X2M
>50 mm
3 way
valve
BLK
BLU
BRN
X4M
X3M
230 V AC
3 kW
L N
400 V AC
3 kW
L1 L2
V3
Z2
