ENGLISH
www.stiebel-eltron.com WWK 220-300 electronic | 19
INSTALLATION
Commissioning
11. Commissioning
11.1 Initial start-up
!
Material losses
Never connect the appliance to the power supply before
the DHW cylinder is filled.
Note
At temperatures below –15°C the high limit safety cut-out
may respond. The appliance may be subjected to these
temperatures during storage or transport.
If required, press the high limit safety cut-out reset
button.
Note
Following an interruption of the power supply, the
compressor operation remains blocked for at least one
minute. The PCB delays electronic starting by a minute,
during which the appliance goes through its initialising
process.
If the compressor subsequently fails to start, it may be
blocked by additional safety devices (Klixon and high
pressure switch). This block should lift after 1 to 10min-
utes.
11.1.1 Filling the DHW cylinder
Fill the DHW cylinder and vent the pipework by following the
procedure below:
Close the drain valve.
Open all DHW draw-off points and the shut-off valve in the
cold water supply.
Close the DHW draw-off points as soon as water starts to
emerge from them.
Check the safety valve by leaving it open until water runs out.
11.1.2 Settings / function check
To check the function, select the maximum set temperature.
Note
Following an interruption of the power supply, the
compressor operation remains blocked for at least one
minute. The PCB delays electronic starting by a minute,
during which the appliance goes through its initialising
process.
If the compressor subsequently fails to start, it may be
blocked by additional safety devices (Klixon and high
pressure switch). This block should lift after 1 to 10min-
utes.
Establish the customer's comfort requirements and select the ap-
propriate set DHW temperature. For information regarding DHW
demand, consult VDI guideline2067.
Following completion of the function check, reduce the set DHW
temperature for a more energy-concious appliance operation.
11.1.3 Appliance handover
Explain the appliance function to users and familiarise them
with its operation.
Make the user aware of potential dangers, especially the risk
of scalding.
Make users aware of critical environmental factors and re-
quirements concerning the installation site.
Inform users that water may drip from the safety valve dur-
ing the heat-up process.
Hand over these operating and installation instructions to
users for safe-keeping.
11.2 Recommissioning
If the appliance is switched off due to an interruption to the power
supply, no specific measures for restarting are required once the
power supply has been restored. The appliance has saved the
parameters most recently set and continues operating with these.
If the rapid/comfort heating function was active before interrup-
tion of the power supply, this is reactivated with a set temperature
of 65°C once the power supply has been restored.
Emergency mode is not reactivated after an interruption of the
power supply.
Note
Following an interruption of the power supply, the
compressor operation remains blocked for at least one
minute. The PCB delays electronic starting by a minute,
during which the appliance goes through its initialising
process.
If the compressor subsequently fails to start, it may be
blocked by additional safety devices (Klixon and high
pressure switch). This block should lift after 1 to 10min-
utes.
12. Shutdown
!
Material losses
If you disconnect the appliance from the power supply, it
is no longer protected against frost or corrosion.
Only disconnect the appliance from the power sup-
ply for longer periods if you are also draining the
DHW cylinder.
If you want to switch the appliance off for a longer period, always
drain the DHW cylinder. See chapter "Maintenance/ Draining the
appliance".
The appliance can only be switched off by interrupting the power
supply.
Pull the mains plug from the socket or disconnect the appli-
ance from the mains at the MCB/fuse in the fuse box.
314104-38523-9034_WWK_220-300_electronic_en_pl.indb 19 24.02.2015 10:33:45
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