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[Buffer] function block – TWIN Configuration parameter
• [Residual heat to buffer bottom]: The buffer
absorbs residual heat until the boiler temperature
is below [Buffer bottom], but at most only until
temperature [Enable res. heat] is reached.
Explanation of [Enable res. heat]
The boiler may be cooled down to this configurable
temperature if the [Residual heat usage] parameter
has been set to [Residual heat to buffer bottom].
Explanation of the [Extra charge] function
This function defines a daily point in time for the buffer
(=[Start time]) to charge the buffer additionally. This
charging is done independently of the actual consumer
requirements and independently of the set time
windows.
A separate minimum temperature [Buffer top min.] and
shutdown temperature [Buffer bottom off] can be set
for this charge. Charging ends as soon as the buffer
reaches these temperatures.
The function is deactivated if one of the two tem-
peratures is set to "0".
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