eta TWIN 20 kW, Operation

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[Buffer] function block ETAtouch controller
displayed twice, and the additional buffer temperatures
for solar stratified charging are displayed next to the
buffer.
Fig. 9-39: Stratified charging of the buffer
9.4.3 Buffer as a combination tank
Buffer with integrated hot water tank or coils
Fig. 9-40: Combination tank
1 Current hot water temperature
2 [Load immediately] button.
Immediate charging of the hot water, independent
of the set time slots.
In the settings menu ( button), the time window for
the loading of the hot water and the desired hot water
temperature can be set (see chapter
9.4.3.1 "Setting
the hot water charging times" ).
The configurable [Switch-on diff.] parameter addition-
ally allows you to determine how far the hot water
temperature can drop before the hot water tank again
demands heat from the buffer (see
9.4.4.12 "Switch-on
diff." ).
[Load immediately] button
This button causes the hot water to be charged
to the highest set temperature of all time slots
and days of the week if the current temperature
has dropped below [Switch-on diff.], ignoring the
current time slot. When active, the button is highlighted
in yellow
.
9.4.3.1 Setting the hot water charging times
Opening charging times and temperature for hot
water with a combination tank
The charging times for the hot water and the set tem-
peratures can be adjusted in the settings (
button).
To adjust, open the settings and then open the