Cosmo Multi 2 Montage- Und Bedienungsanleitung Seite 96

96
4. Functions and options
store blocked
Priority logic and store sequence control:
Solar/adj. values/priority St1 (...St4)
adjustment range: 1 ... 4
factory setting: 1; 2; 3; 4
Store sequence control:
Solar/Expert/t-circ.
adjustment range: 1 ... 60 min
factory setting: 15 min
Loading break time:
Solar/Expert/t-st
adjustment range: 1 ... 60 min
factory setting: 2 min
Collector rise temperature:
Solar/Expert/DT-col
adjustment range: 1 ... 10 K
factory setting: 1 K
Balancing functions:
Solar/Balance values
A store is blocked if either the corresponding sensor
is defective or the emergency shutdown temperature
has been reached.
Priority logic is used in multi-store systems only.
If St1, St2, St 3, St4 are set to 1, the stores with a tempe-
rature difference to the collector are loaded in parallel
as long as their switch-on conditions are fulfilled.
If St1 is set to 1, St2 to 2, St 3 to 3, and St4 to 4 (factory
setting) the first store will be loaded first as long as its
switch-on conditions are fulfilled. When the selected
priority store reaches its adjusted maximum tempera-
ture, the subordinate stores will be loaded in numerical
order via oscillating loading: store 1, then store 2, then
store 3, then store 4.
The controller checks whether the stores can be loaded
(switch-on difference).
When the priority store cannot be loaded, the subor-
dinate stores are checked. If a subordinate store can
be loaded, it will be loaded for the "oscillating loading
time" ("t-circ."). After this period of time, the loading
process stops. The controller monitors the increase in
collector temperature. If it increases by the "collector
rise temperature" (DT-col) within the loading break time
"t-st", the elapsed break time is set to 0. The break time
starts again.
As soon as the switch-on condition of the priority store
is fulfilled, it will be loaded. If the switch-on condition
of the priority store is not fulfilled, loading of the sub-
ordinate stores will be continued. If the priority store
reaches its maximum temperature, oscillating loading
will not be carried out.
The controller has integrated registers which record
the following values:
• maximum temperatures
• operating hours of the relays
• operating days since commissioning of the controller
The values can be reset, except for "operating days".