Electrical Connections - Behncke EWT 80-40 Installationsanweisung

Set-up/Installation
3.5.3 Connecting the Electric Heat Exchanger to the Water Cycle of a Filter System
Install the electric heat exchanger in the pressure line (to the basin) after pump and
filter.
The EWT 80-40 is integrated into the water cycle via interior threads or tube
connections with tube clips.
The EWT 80-70/EWT-T is integrated into the water cycle with PVC glued/screwed
connections.
The electric heat exchanger can be damaged.
When the heat exchanger is connected to the water cycle, please take care that
metal particles do not enter the electric heat exchanger.
take care
The electric heat exchanger might be damaged by chemicals.
Disinfecting devices are always to be installed in the flow direction after the electric
heat exchanger. The minimum distance must be 1 m and the order: first water
take care
hardness control, than chlorine vaccination is to be observed. If chemicals (e. g.
chlorine gas) are used, gases must not enter the electric heat exchanger during
filter standstill times.
3.6

Electrical Connections

The electrical connections are to be executed by an electrical specialist. Local
regulations as well as VDE 0100 are to be taken into consideration.
The electric heat exchanger must be protected by at least two safety circuit
breakers.
The following combinations are offered by the factory
take care
- with a control thermostat
- with a control thermostat and a safety temperature limiter
- with a safety temperature limiter and a contactor up to 12 KW.
If no contactor has been installed by the factory, an external protection for switch-
ing the heating element is necessary (e. g. Behncke control for EWQT 80-xx).
Important!
It should be ensured that the electric heat exchanger can only be switched on if
the water throughput is ensured.
The electrical connections are to be effected in accordance with the switch dia-
gram.
For safety reasons, an FI safety switch is to be integrated into the voltage supply
(30 mA). All metal parts are to be integrated into equipotential bonding.
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