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[BufferFlex] function block Configuration parameter
5.1.2 PufferFlex for log boiler
5.1.2.1 Basic settings
Basic buffer settings for BufferFlex on log boiler
The following parameters apply only to the buffer on a
log boiler (without TWIN pellet burner).
If the log boiler is equipped with a TWIN pellet burner,
the setting parameters are the same as for the buffer
with an automatic boiler. For more information, see
chapter
5.1.1.1 "Basic settings" .
Set or check the following parameters.
For a buffer with a solar heating system or as a
combination tank, the setting parameters are
identical to the buffer with an automatic boiler. For
more information, see chapter
5.1.1.2 "BufferFlex with
solar heating system" and 5.1.1.3 "BufferFlex as a
combination tank" .
Explanation of [Total volume]
The whole buffer volume needs to be indicated for this
parameter. This enables the control system to optimise
the charging of the buffer.
Explanation of [Return from consumers]
This temperature is the mean return temperature of all
consumers connected to the buffer. For example:
heating circuits, hot water tanks, external heat
consumers fresh, water modules...
This temperature forms the basis for calculating the
buffer charging status. If the buffer is charged
uniformly with this temperature (e.g.: 35 °C), this is
equivalent to the charge status "0%".
The average should be set for fluctuating return tem-
peratures.
Explanation of [Res.heat difference]
This sets the minimum temperature between the heat
producer (e.g. boiler) and the temperature sensor
assigned in the buffer, so that the heat producer may
transfer its residual heat to the buffer. If this difference
is undershot, no more residual heat is fed into the
buffer.
Example: the assigned temperature sensor for the
residual heat is the lowermost buffer sensor and the
temperature here is currently 35 °C.
[Res.heat difference]: 8 °C
=> The boiler may continue to feed its residual heat to
the buffer until the boiler temperature is at only 43 °C
(=35°+8°).
Explanation of [Enable temperature]
This parameter specifies the minimum boiler
temperature for charging the buffer when burning logs.
Buffer charging can only occur when the boiler has
exceeded this temperature.
Settings
Total volume
Return from consumers
Buffer
Boiler/buffer producer
Res.heat difference
Enable temperature