Behncke EWT 60 TD, Installation Instruction

Page: 37 / 108

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
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
regu lations as well as VDE 0100 are to be taken into consideration.
The heat exchanges must be permanently connected to fixed pipework which is
fitted with a protective earth conductor.
The electric heat exchanger must be protected by at least two safety circuit
breakers .
The following combinations are offered by the factory
– with a safety temperature limiter (STB) (EWT 60-20)
– with a control thermostat and STB (EWT 60-30/TD)
– with a STB and Flow switch (EWT 60-25)
– with a Control thermostat, STB and Flow switch (EWT 60-35/TDS)
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.
4 Functional Course
In the electric heat exchanger, heat is transferred to the bathwater through the
heating element.
The thermostat regulates the water temperature in accordance with the adjusted
value, range from 0 to 40°C.
By pressing the disorder button, the electric heat exchanger can be put into normal
operation again after removal of the disorder.
The safety temperature limiter protects from overheating. It switches the electric
heat exchanger off at a temperature of 44°C.
Set-up/Installation/Functional Course
English
37