21
Fitting the casing ring
WARNING Electrocution
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Reconnect the earth cable to the casing ring.
D
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3
48
14
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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
at the other end of the casing ring.
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Secure the casing ring with screws.
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Fit the pipe collar of the condensate drain and the condensate drain bend.
Protective anode and battery change
The appliance is equipped with a maintenance-free impressed current anode that protects the cylinder from
corrosion when it is connected to the power supply. At the factory, the appliance is fitted with rechargeable
batteries that ensure the power supply to the impressed current anode in the case of a power failure. The
power supply to the appliance must not be interrupted for more than 16
hours.
If the power supply is regularly interrupted by a switching contact or the security of supply is inadequate, the
rechargeable batteries of the impressed current anode must be replaced every three years. Neglecting to do
this puts the appliance at risk of damage. If regular interruptions in the power supply are not anticipated and
there is security of supply, no maintenance of the batteries is required and the appliance is maintenance-free
in this regard.
!
Material losses
Never use batteries that cannot be recharged. Only NiMH rechargeable batteries are permissible.
Batteries may be damaged in the appliance. Without a power supply, the impressed current anode and
the cylinder would not be protected against corrosion.
The rechargeable batteries are secured at the back of the fascia.
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4
0
6
2
1
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Undo the screw securing the fascia.
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Carefully remove the fascia so that the cables running from the batteries to the impressed current anode
in the appliance are not pulled out.
