STIEBEL ELTRON WWK 302 H - Page 16

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INSTALLATION
Installation
X0
2
L
L
N
N
PE
PE
L
N
PE
GNYE
BU
BK
1
1
2
X3
2
3
3
1
1
2
L1 / L2 / L3
N
A
B
D0000055663
A Power supply provided by power supply utility or energy
management system for switching the load (compressor)
B Power supply for the impressed current anode and the
electronics
BK black
BU blue
GNYE green/yellow
 Connect the electric cables for the separate impressed cur-
rent anode power supply to X0/1 and X0/2.
10.3.3 Connection with external signal transmitter
Note
This type of connection must only be carried out by a
qualified electrician.
Note
The appliance has a second and higher set temperature
preselected at the factory. This is activated in the event
of an external switching signal. Set temperature2 takes
priority over 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 transducer")
(L to X3/1, N to X3/2), the appliance activates set temperature2.
Following a one-off activation (signal is present for at least 1min-
ute), set temperature2 applies for at least 20minutes. Set temper-
ature2 is ranked higher than set temperature1. When the relevant
set DHW temperature has been reached, the compressor 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 of an external signal transmitter.
Example:
- Water temperature = 61°C
- Set temperature 1 = 60°C
- Set temperature 2 = 65°C
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
 Remove the appliance cover (see chapter "Cleaning and
maintenance/ Removing the appliance cover").
D0000056083
1
2
1 Strain relief
2 Terminal X3
 Prepare the electric cables in such a way that each cable ter-
minates with a wire ferrule.
 Push the cables through one of the cable entries in the appli-
ance casing.