iNSTallaTiON
Commissioning
www.stiebel-eltron.com WWK222-302 H | 25
11. Commissioning
WARNING Electrocution
Never operate the appliance when the casing is open or
without a cover.
11.1 Initial start-up
Note
Fill the DHW cylinder before switching on the power sup-
ply to the appliance.
The appliance is equipped with boil-dry protection to
prevent operation if the DHW cylinder is not completely
full of water.
Note
Following an interruption to the power supply, compres-
sor operation remains blocked for at least one minute.
The PCB delays the electrical start-up by one minute,
during which the appliance initialises. If the compres-
sor subsequently fails to start, it may be locked out by
additional safety devices (motor overload relay and high
pressure switch). This lockout should be cleared after 1
to 10 minutes.
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 comes out
of them.
Check the safety valve by leaving it open until water runs out.
11.1.2 Settings / function check
Switch the power supply ON.
Check the appliance function.
Check the function of the safety assembly.
After completing the function check, reducing the set DHW tem-
perature helps to save energy.
Establish the customer's comfort requirements and adjust
the set DHW temperature accordingly. For hygiene reasons,
do not set a DHW temperature of less than 61°C (see section
"Set temperature1" on page10 and "Set temperature2" on
page10). Also ensure compliance with the legislation in force
at the installation location.
11.1.3 Appliance handover
Explain the appliance function to users and familiarise them
with how it works.
Make users 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.
Please note that the appliance is not protected against frost
and corrosion when it is disconnected from the power sup-
ply. At the factory, the appliance is fitted with rechargeable
batteries that ensure the power supply to the impressed cur-
rent anode in the case of a power failure. The batteries must
be replaced every three years if the power supply is regularly
interrupted by a switching contact or if there is inadequate
security of supply. We recommend a maintenance contract
for replacing the batteries.
Hand over these operating and installation instructions to
users for safekeeping.
11.2 Recommissioning
Note
Following an interruption to the power supply, compres-
sor operation remains blocked for at least one minute.
The PCB delays the electrical start-up by one minute,
during which the appliance initialises.
If the compressor subsequently fails to start, it may be
locked out by additional safety devices (motor overload
relay and high pressure switch). This lockout should be
cleared after 1 to 10 minutes.
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.
If the "Rapid/comfort heat-up" function was active before the
power supply interruption, it is re-enabled with a set temperature
of 65°C once the power supply has been restored.
Emergency mode is not reactivated after an interruption to the
power supply.
To Next Page
Loading...
