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4.6 PRIORITY S (X)
Priority of Storages X
This determines the order, in which the storages are charged. If the same priority is set for 2 storages, the charging is not switchedm over until
charging the active storage is not possible anymore.
Settings range: 1 (highest) - 3 (lowest)
4.7 T-PRIORITY
Temperature threshold for absolute priority
In systems with multiple storage tanks, charging of the lower-priority storage tank will never take place until this set temperature setpoint at the
storage tank sensor of the highest-priority storage tank is exceeded.
Setting range: from 0°C to 90°C (32°F to 194°F) / default setting: 40°C (104°F)
4.8 LOADING TIME
Interruption of charging into the lower priority storage tank
The charging of the lower-priority storage tank is interrupted after the settable time in order to check whether the collector has reached a tempera-
ture level that allows charging in the higher-priority storage tank. If so, the priority storage tank is charged.
If not, the increase is measured (see “4.9. - Increase”), to check if charging of the priority storage tank will be possible shortly.
Setting range: from 1 to 90 minutes / default setting: 20 minutes
CAUTION
If the set temperature difference is too small, this may result in ineffective operation, depending on the system and sensor posi-
tions.Special switching conditions apply for speed control (see „6.2. - Speed control“ on page 27)!
4.5
∆
T SOLAR S (X)
Switch-on/switch-off temperature difference for sensor X:
If this temperature difference between the reference sensors is exceeded and the other conditions are also met, then the controller switches the
applicable relay on. When the temperature drops to ΔT Off, then the relay is switched off.
Settings range: ΔT from 4°C to 50°C (39°F to 122°F) / ΔT-Off from 2°C to 49°C (35°F to 120°F)
Default setting: Depends on selected hydraulic variant
4.9 INCREASE
Extension of the charging pause due to temperature increase in the collector
For precise setting of the charging priorities for systems with multiple storage tanks, the necessary temperature increase of the collector at which
the interruption of the charging into the lower-priority storage tank is extended by one minute is set here. The interruption is extended because the
temperature increase of the collector is expected to enable charging in the higher-priority storage tank soon.
As soon as ΔT conditions are met, the priority storage tank is charged. If the rise in temperature falls below the set value, then the charging of the
lower-priority storage tank is enabled again.
Setting range: from 1°C to 10°C (33°F to 50°F) /default setting: 3°C (37°F)
