Your reply is somewhat odd because the manual shows you to have the same control set as mine
Operating manual
ecoTEC plus 937
The storage tank charging of the layer charging storage
tank is only active if the warmstart function is switched on.
This is shown by the symbol in the display (see Section
4.4.2).
If the storage tank charging function is switched on you
can use the knob for the hot water draw-off temperature
to set the following temperatures:
– Knob setting "b“ 50 °C
– Knob setting "a“ 65 °C
If the storage tank charging function is switched off you
can use the knob for the hot water draw-off temperature
to set the following temperatures:
– Knob setting "c“ 35 °C
– Knob setting "a“ 65 °C
a
a
b
c
c
1
1
1
Fig. 4.8 Setting range for the storage tank temperature
If the storage tank charging function is switched off, the
tank is not held at temperature. The unit only switches
on in this case if the water is drawn off and only operates
in the through-flow mode.
Sorry it appears that the diagrams will not cut and paste
