12
Thermann Installer's Manual
Heat Pump Water Heaters
Failure to observe this point puts the appliance at risk of damage.
The need to replace the batteries can be avoided by connecting the impressed current anode separately to a
continuous power supply. This continues to protect the hot water cylinder against corrosion if the rest of the
appliance is switched off, e.g. by a controlled power supply.
f
f
Remove the appliance cover (see chapter "Cleaning and maintenance
/ Removing the appliance cover").
D
00000
5
6
0
8
3
1
2
1 Strain relief
2 Terminal X0
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 appliance casing.
f
f
Route leads through the strain relief.
f
f
Remove the jumper which leads from X0/N to X0/2 in the delivered condition.
f
f
Remove the jumper which leads from X0/L to X0/1 in the delivered condition.
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
5
9
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 cables for the separate impressed current anode power supply to X0/1 and X0/2.
!
Material losses
The power supply to the impressed current anode must be continuously ensured.
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, higher set temperature which is preset at the factory. This is activated in
the event of an external switching signal. Set temperature
2 takes priority over the standard set tem-
perature while there is an external switching signal.
An external signal transmitter for switching a separate set hot water 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 specification (see "Permissible voltage range, external signal transmit-
ter") (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
minute), set temperature
2 applies for at least
20
minutes. Set temperature
2 is ranked higher than set temperature
1. When the relevant set hot water tem-
perature has been reached, the compressor switches off and remains off for a minimum idle time of 20
minutes.
