Buderus 500 Series User Manual page 24

10 Initial start-up
Setting the flow temperature for CH
Press E button (see fig. 7, item 2) three times then adjust
the flow temperature to the desired temperature (30 °C –
80 °C) using the C and D keys (see fig. 7, item 1).
Factory setting is 80 °C.
It is not possible to set the flow temperature when the boiler is
set to summer operation.
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