STIEBEL ELTRON WWK 220 electronic - Assembling the Appliance

18 | WWK 220-300 electronic www.stiebel-eltron.com
INSTALLATION
Installation
10.4.2 Connection with external signal transmitter
An external signal transmitter for switching a separate set DHW
temperature (set temperature2) can be connected to terminal
X0/2.
In the delivered condition, terminal X0/2 is not assigned. If this
terminal is connected to 230V, the appliance activates set tem-
perature2.
Following a one-off activation (signal is present for at least one
minute), set temperature2 applies for at least 20minutes and is
ranked higher than set temperature1.
WARNING Electrocution
If the 230V signal of an external signal transmitter is
to be connected to terminal X0/2, do not connect the
appliance to the power supply with the factory fitted
power cable and standard plug.
Instead connect the appliance to the power supply per-
manently. Never interchange L1 and N.
Note
 Never wire up terminal X0/1.
Example 1: Power-OFF signal with own 230V phase
X0
1
2
L
L
N
N
PE
PE
L1
L1, L2 oder L3
N
PE
EVU:
D0000034589
Example 2: Photovoltaic signal via on-site relay and phase
routed outside the appliance
Note
The relay in the inverter must meet the following re-
quirements:
- Potential-free relay (240VAC / 24VDC, 1A) with
N/O contact
- Adherence to safety regulations and standards for
safety extra low voltage
- The switching output must be programmed so that
the relay closes or opens if certain limits are exceed-
ed or undershot (inverter output level).
If necessary, check with the inverter manufacturer wheth-
er the product meets the stated criteria.
X0
1
2
L
L
N
N
PE
PE
L1
N
PE
1
D0000034590
1 Inverter (floating contact)
The inverter power feed is located at a central distribution point
(e.g. in the main fuse box).
Connection to terminal block X0
 Remove the appliance cover (see chapter "Cleaning and
maintenance/ Removing the appliance cover").
D0000034803
1
1 Terminal X0
 Prepare the leads for connection to X0 in such a manner, that
each lead terminating at X0 has a wire ferrule.
 Route leads through the strain relief.
 Connect the leads to X0 (see chapter "Connection with exter-
nal signal transmitter").
10.5 Assembling the appliance
Note
Refit the appliance cover after completing your work. See
chapter "Maintenance and cleaning/ Fitting the appliance
cover").
314104-38523-9034_WWK_220-300_electronic_en_pl.indb 18 24.02.2015 10:33:43