eta PelletsCompact 20-32 kW, Operation

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[Fresh water module] function block ETAtouch controller
5.5 [Fresh water module] function
block
Fresh water module overview screen
1 Operating condition and information.
A description of the operating conditions can be
found in the integrated Help menu by pressing the
button.
2 Producer for the fresh water module.
Currently, the fresh water module is charged by the
buffer at a flow temperature of 58 °C.
3 Primary side return temperature
4 Circulation pump (only displayed if it has been
installed and is in operation)
5 Hot water temperature (the tap is displayed only
when hot water is currently being drawn)
6 [Settings] button.
In this menu, the time window can be set, for
example.
Function of the fresh water module
The desired hot water temperature is set with the po-
tentiometer on the fresh water module. If [Target value
can be set with rotary knob] has been disabled in the
configuration, different time windows and hot water
temperatures can be set. See chapter
5.5.1 "Setting
the hot water charging times" .
Inside these time windows, the upper part of the buffer
is maintained at no lower than the configured hot water
temperature. Outside the set time windows, the hot
water is maintained at the lowest set temperature of
the time windows, provided that the accumulator tank
is sufficiently hot.
If a circulation pump is installed for the hot water,
it will be put into operation as "self-learning" by
default. This means that the hot water taps of the last
2 weeks are stored. The operating times of the current
day will be calculated from this and the circulation
pump is started accordingly.
When this function is switched off, the operating times
for the circulation pump can be set manually. This is
achieved by opening the settings (
button) and
pressing the [Circulation times Daily plan] button.
After commissioning, no more data is available
for the "self-learning" circulation. That is why an
operating period of about 4 weeks is required in the
beginning, so that the control system can save
sufficient data.