Cosmo Multi 2 Montage- Und Bedienungsanleitung Seite 95

4. Functions and options
Collector minimum limitation:
Solar/Expert/Tcolmin
adjustment range: -25 ... 90 °C
factory setting: 10 °C
hysteresis 2 K
St2on ... St4on:
Solar/Options/St2 on (... St4 on)
selection: „Yes", „No"
factory setting: „Yes"
Store loading:
Solar/adj. values/DTon (...DT4on)
adjustment range: 1,0 ... 20,0 K
factory setting: 5,0 K
Solar/adj. values/DToff (...DT4off)
adjustment range: 0,5 ... 19,5 K
factory setting: 3,0 K
Solar/adj. values/DTset (...
adjustment range: 2,0 ... 30,0 K
factory setting: 6,0 K
Store maximum limitation:
Solar/adj. values/Tstmax (...Tst4max)
adjustment range: 4 ... 95 °C
factory setting: 60 °C
Hysteresis
Solar/Expert/DT-Stmax (...DT-St4max)
adjustment range: 0,5 ... 5,0 K
factory setting: 2,0 K
store emergency shutdown
value 95 °C
hysteresis = 2 K
D T4set)
This is the minimum temperature which must be ex-
ceeded for the solar pump to switch on. If the adjusted
minimum temperature is not exceeded or the condition
"collector blocked" is fulfilled.
By means of this function, the respective store can be
"removed" from solar control. This means that it is no
longer considered for solar loading.
The temperature of the store will be indicated but a
sensor defect will not be recognised.
If the adjusted switch-on difference DTon between coll-
ector and store is exceeded, the store will be loaded.
If this difference falls below the adjusted switch-off dif-
ference DToff, the loading function will be switched off.
Loading of the store will also be switched off or sup-
pressed if the relevant store or collector is blocked
(collector blocked, see collector minimum limitation) or
if the store is at maximum limitation.
The parameter "DTset" is the nominal temperture dif-
ference between collector and store used for pump
speed control. Once DTset is reached, the pump speed
is increased by 10 %.
If the adjusted maximum temperature Tstmax is exee-
ded, loading of the store is stopped. If the store cools
down by more than 2 K (hysteresis), the store will be
loaded again.
If the cooling options are activated (e.g. collector
cooling), the store will be loaded beyond the adjusted
maximum temperature.
In order to avoid too high temperatures in the store,
the emergency shutdown of the store is additionally
provided, which also blocks the store for the cooling
options. If a store reaches the temperature of 95 °C, the
emergency shutdown is active.
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