eta PelletsCompact 20-32 kW, Operation

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[Buffer] function block ETAtouch controller
5.3.4 Text menu - Adjustable parameters
Adjustable parameters
The following parameters can be configured for the
basic function in the buffer text menu.
If a solar heating system is additionally connected to
the buffer, further parameters can be set.
If the buffer is implemented as a combination tank,
further parameters can be set.
Detailed descriptions of the parameters are provided
below.
5.3.4.1 Buffer top min.
Explanation of [Buffer top min.]
This parameter defines the minimum temperature of
the buffer storage tank inside the configured time slot.
The factory setting for this parameter is 10°C.
The higher this temperature is set, the larger the
heat reserve in the buffer. At the same time, however,
higher temperatures in the buffer reduce the solar
yield. Because the buffer is kept at the [Buffer top min.]
temperature using energy from the boiler, even if there
is no demand from the consumers.
The factory setting can remain unchanged as long as
all components of the heating system are controlled by
the ETA control system. A higher value is required if
peaks in output have to be covered or very fast heat
availability is needed.
The parameter can be found under:
5.3.4.2 Buffer bottom off
Explanation of [Buffer bottom off]
This parameter ends charging of the buffer storage
tank by the boiler. As soon as the [Buffer bottom]
temperature sensor in the buffer storage tank has
exceeded the configured [Buffer bottom off] tempera-
ture, charging of the buffer by the boiler is stopped.
Buffer
Buffer top
Buffer top min.
Buffer bottom
Buffer bottom off
Extra charge
Buffer top min.
Buffer bottom off
Extra charging from
Chrg. button
Buffer
Solar heat diss.
a
Activate?
...until buffer max
Buffer top Solar
b
Buffer top min. solar
Min. out. temp. Solar prio.
Priority
Buffer bottom Solar
Buffer bottom max
Solar priority
Solar priority
Begin solar prio.
Change priority at
End solar prio.
Min. out. temp. Solar prio.
Extra solar heat
from outside temp.
at buffer top
at buffer bottom sol.
Priority
c
a. Only visible with several buffer storage tanks and solar
heating system
b. Only visible with solar heating system and buffer with 2
internal coils
c. Only for solar heating systems with switchover between
several tanks
Hot water tank
Switch-on diff.
Circulation
Circulation runtime
Circulation pause
Enable circulation
Buffer
Buffer top
Buffer top min.