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7.5
Storage priority
When a -storage-tank system is selected, the storage priority can also
be specified.
When storage priority is activated, a first-priority storage tank and a
second-priority storage tank can be defined. If it is intended that one of
the two storage tanks is not to be loaded, this tank can be "removed"
from the storage priority.
When storage tank priority is deactivated the storage tanks will be
loaded equally.
Control
When storage priority is activated, the controller primarily attempts to
load the first-priority storage tank. However, if this is initially impossible
due to the collector temperature being too low, preference is given to
loading the second-priority storage tank, if possible. In this event, the
controller conducts regular tests (every 30 minutes) in order to check
whether it has become possible to load the first-priority storage tank.
This test can take several minutes, as the collector array must heat up
sufficiently. On the basis of this heating process, the controller predicts
whether it is possible to load the first-priority storage tank in a foresee-
able period of time.
When storage priority is deactivated, the controller begins (if possible) to
load the colder storage tank, and loads it until its temperature exceeds
that of the other storage tank. Loading then switches to the other stor-
age tank. Thus, both storage tanks are heated equally, in an alternating
manner.
Accessing storage priority
SET: press button for approx. sec.
: select the menu item "Storage priority".
Activating/deactivating storage priority
SET: press button.
The display for activating (on) or deactivating (off) storage prior-
ity appears.
SET: press button for approx. sec.
Storage priority is activated or deactivated.
Specifying storage priority (if storage priority is acti-
vated)
: press button.
The display for setting the storage priority appears.
SET: press button.
The storage priority flashes.
: set the storage priority.
SET: press button to confirm.
54
EN
Display: 5
Display: 5
[Storage priority]
[Storage priority]
Display: 5.1
Display: 5.1
[off]
[off]
[on]
[on]
Display: 5.
Display: 5.
730.138 | 08.1
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