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Operating manual – auroMATIC 560 0020008427_016
4.9 Special functions
Please refer to Sec. 5.6 for information on how to acti-
vate the following special functions.
4.9.1 Advance
When the advance is activated, the reheating function is
enabled. This means that the set target value for the
cylinder will be maintained by reheating if necessary.
4.9.2 One-time reheating
When this function is activated, the cylinder tempera-
ture is reheated to the set level one time.
4.9.3 Holiday function
When this function is activated, the operating mode is
switched to "OFF" for the set holiday period
(1 to 99 days). This deactivates both the solar yield and
the reheating function.
4.10 Cylinder priority
Two solar-charged cylinders can be connected to the
heating installation. You can use the PRIO cylinder pri-
ority function to define which cylinder should be
charged as the highest priority.
This is normally the drinking water cylinder. The cylin-
ders can only be clearly identified via the cylinder sen-
sors (cylinder 1 = Sp 2; cylinder 2 = SP 3).
You can only change this setting at the installer level.
The cylinder that has been assigned the highest priority
will always be charged if the collector temperature is
greater than the sum of the actual temperature in the
cylinder and the activation difference specified. The
heating of the cylinder will stop once the maximum tem-
perature for the cylinder is reached, or if the collector
temperature is less than the actual cylinder tempera-
ture plus the set deactivation difference.
The second cylinder can only be heated when the first
cylinder is not being heated. The charging of the second
cylinder is interrupted for at least 5 minutes every
15 minutes to check whether the cylinder can be
charged with the highest priority. The same activation
and deactivation conditions apply here as well.
4.11 Frost protection function
The frost protection function is relevant to Spain only
due to statutory regulations and is deactivated in the
as-delivered condition (standard setting: OFF).
h
Note
This function should not be activated to pre-
vent undesired cooling of the cylinder.
4.12 Solar circuit protection function
If the solar heat exceeds the current heat demand
(e.g. all cylinders fully charged), the temperature may
occur in the collector field may increase rapidly.
If the safety temperature at the collector sensor is ex-
ceeded, the collector pump is switched off to protect
the solar circuit (solar pump, valves, etc.) from over-
heating, or restarting is prevented if a solar reheating
requirement exists. The solar pump is switched back on
once the system has cooled down. This function is exe-
cuted independently for each collector field.
4.13 Solar pump kick (tube collector function)
Depending on the design of the tube collectors, the
measured value obtained for the purposes of tempera-
ture recording may be subject to a time delay. This can
be reduced via the tube collector function.
Measured value of collector temperature with active
tube collector function:
The solar pump is switched on for 15 s (solar pump kick)
once the temperature at the collector sensor has risen
by 2 °C. The heated solar fluid is thereby transported
more quickly to the measuring point.
If the temperature difference between the collector and
cylinder temperature is at least 10 °C) the solar pump
runs for as long as is necessary to heat the cylinder up
(differential control). If two solar circuits are connected,
the tube collector function is activated for both solar
circuits.
The function is implemented separately in each case for
all collector fields.
4 Functions
6


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