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5. Information for Assembly and Installation
5.1 General Information for Installation
The heating unit and the sensor protection tube must be surrounded completely by sufficient water during operation. The
thermally-induced flow of water must not be obstructed.
The built-in heater is equipped with a safety temperature limiter, which stops any further heating of the device from a water
temperature of max. 110°C (EN 60335 -2-21; ÖVE-EW41, Part 2 (500) / 1971). Therefore, the connecting components
(connecting pipes, safety valve combinations, etc.) must be selected in such a way that they resist temperatures of 110°C
and any consequential damages are avoided in the event of any malfunction of the temperature control.
Assembly and installation must be performed exclusively by licensed craftsmen.
Fitting position:
Temperature
control
Heating unit
The flange must not be longer than max. 130 mm, so that the thermometer and the heating unit still project into the hot
water tank sufficiently.
The built-in heating unit must be installed as far down as possible in the boiler, in order to heat up the entire boiler con-
tents equally. Thereby, it is not of importance whether the heating elements reach across the full fitting depth available.
Space must be kept free in front of the boiler flange (fitting length + 100 mm) for assembly, etc.
The function is impaired by the formation of boiler scale. Appropriate measures must be taken in the case of heavily calci-
ferous water: e.g. lowering of temperature, installation of a softening system, removal of the boiler scale.
Id.Nr.: 228557-10
CORRECT
COLD ZONE
Flange frame too long and
welded-in too high.
Temperature control below
heating unit.
4
WRONG
Heating unit
COLD ZONE
E
E