INsTALLATIoN
Installation
64
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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
D
00000
59
15
2
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
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 ensured at all times.
!
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").
10.5.3 Connection options: Operation with external signal
transmitter
!
Material losses
See "Permissible voltage range for external signal trans-
mitters" in chapter "Specification/data table".
Note
The appliance has a second, higher set temperature
which is selected at the factory. This is activated when
there is 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 = 55 °C
- Set temperature 1 = 50 °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]
D
00000
346
13
A External signal
B Compressor
1 20 min. minimum runtime, set temperature 2
2 20 min. minimum compressor idle time
f
f
Remove the appliance cover (see chapter "Cleaning and
maintenance / Removing the appliance cover").
D
00000
61
12
5
1
2
1 Strain relief
2 Terminal X3
f
f
Prepare the cables in such a way that each cable terminates
with a wire ferrule.
f
f
Push the cables through one of the cable entries in the appli-
ance casing.
f
f
Route the cables through the strain relief.
f
f
Connect the cables to X3.