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Accelera® 220-300 E |
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INSTALLATION
Maintenance and cleaning
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GL
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15.5 Descaling the electric booster element
Only descale the fl ange of the electric booster element after re-
moving it, and never treat the interior of the DHW tank and the im-
pressed current anode with descaling agents. The electric booster
element is screwed into the appliance at a central point at the top.
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1 Electric booster element with protective anode
15.6
Protective
anode
The fl ange of the electric booster element is equipped with a
protective anode that protects the appliance from corrosion while
it is connected to the power supply. The protective anode is a
maintenance-free impressed current anode.
If a fault code in the display indicates that the protective anode is
faulty, proceed as follows:
Remove the controller of the electric booster element.
Check the protective anode connector and its wiring.
Refi t the controller of the electric booster element.
15.7
Valves
Regularly check the system's valves (safety valve, pressure reduc-
ing valve, drain valve, vacuum breaker, mixing valve), to ensure the
operational reliability of the appliance. The amount of lime-scale
deposits depends on local water quality.
Check all valves in the system and remove lime-scale
deposits.
Replace the valves if necessary.
Check the function of the valves.
15.8 Replacing the power cable
WARNING Electrocution
If the power cable is faulty, replace it with a new one.
The power cable should only be replaced by a qualifi ed
contractor. Please contact Stiebel Eltron at 800-582-8423
15.9 Fitting the casing ring
WARNING Electrocution
Reconnect the ground wire to the casing ring.
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Fit the upper casing ring. The casing ring overlaps along the
joint. A tab on one end clips into the recess on the other end
of the casing ring.
Secure the casing ring with fi xing screws.
Fit the pipe collar of the condensate drain and the conden-
sate drain bend.
15.10 Fitting the appliance cover
WARNING Electrocution
Reconnect the ground wire to the appliance cover.
Place the lid back on the appliance top.
Connect the ground cable to the signed ground terminal.
Connect the cable linking the control with the appliance ECB
to the back of the panel.
Insert the control panel.
Secure the appliance cover and the control panel using the
screw at the top of the control panel.
