STIEBEL ELTRON WWK 223 electronic - Page 22

INSTALLATION
Installation
22 | WWK 223-303 electronic www.stiebel-eltron.com
X0
2
L
L
N
N
PE
PE
L
N
PE
GNYE
BU
BN
1
1
2
X3
2
3
3
1
1
2
L1 / L2 / L3
N
A
B
D0000059152
A Power supply provided by power supply utility or energy
management system for switching the load (compressor)
B Power supply to impressed current anode and PCB
BN Brown
BU Blue
GNYE Green/yellow
f Connect the electric cables for the separate impressed cur-
rent anode power supply to X0/1 and X0/2.
!
Material losses
The power supply to the impressed current anode must
be continuously ensured.
!
Material losses
With regard to the external switching device, the min-
imum runtime and minimum pause times must be ob-
served (see chapter "Appliance description/Minimum
runtime and minimum pause time").
10.3.3 Connection options: Operation with external signal
transmitter
!
Material losses
See "Permissible voltage range for external signal trans-
mitters" in the "Specification/data table" chapter.
Note
The appliance has a second, higher set temperature
which is selected at the factory. This is activated in the
event of an external switching signal. Set temperature2
is higher ranking than the standard set temperature while
there is an external switching signal.
An external signal transmitter for switching a separate set DHW
temperature (set temperature2) can be connected to terminal
X3/1-2. In the delivered condition, terminal X3/1-2 is not assigned.
If this terminal is connected at the voltage stated in the specifica-
tion (see "Permissible voltage range, external signal transmitter")
(L to X3/1, N to X3/2), the appliance enables set temperature2.
Following one-off activation (signal present for at least 1min-
ute), set temperature2 applies for at least 20minutes. When
the relevant DHW set temperature has been reached, the com-
pressor switches off and remains off for a minimum idle time of
20minutes.
The following diagram illustrates the connections by means of a
sample signal sequence from an external signal transmitter.
Example:
Water temperature °C 55
Set temperature 1 °C 50
Set temperature 2 °C 65
A
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]
B
1
1
0 2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]
D0000034613
A External signal
B Compressor
1 20 min. minimum runtime, set temperature2
2 20 min. minimum compressor idle time
f Remove the appliance cover (see chapter "Cleaning and
maintenance/ Removing the appliance cover").
D0000056083
1
2
1 Strain relief
2 Terminal X3
f Prepare the electric cables in such a way that they terminate
with wire ferrules.
f Push the cables through one of the cable entries in the appli-
ance casing.
f Route leads through the strain relief.
f Connect the cables to X3.
Example 1 : Power-OFF signal with own 230V phase
X0
2
L
L
N
N
PE
PE
L
N
PE
GNYE
BU
BN
1
1
2
X3
2
3
3
1
1
2
L1 / L2 / L3
N
EVU
D0000059154
EVU Power supply utility
BN Brown
BU Blue
GNYE Green/yellow