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17. Plastic pipes at the inlet and outlet may be used to connect the water heater, and
in the case of the outlet pipes, their strength shall be at least 20 bar at 70°C.
18. Make sure that the heater is not emptied of water, which may occur if there is no
water in the supply network.
19. Failure to install the magnetic filter on water supply pipe can cause unit damage.
20. Lime scale built-up on heater’s elements may limit water flow and lead to heater’s
damage. Such damages are not subjected to warranty rights. Water heater and
sanitary fittings should be periodically descaled, whereas, frequency of this
process should be adjusted to water hardness in given installation. Lime scale
built-up may be partially limited by usage of magnetic descalers installed on the
cold water inlet pipe.
21. Appropriate precaution must be taken when using hot water. Temperature of water
over 40°C may cause hot feeling and can be dangerous for children, whereas,
temperature above 50°C may lead to first degree burn (especially amongst small
children).
