D e lt a S o l
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C/4
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4.1.10 Maximum store temperature
If the adjusted maximum temperature is exceeded, the store
will no longer be loaded in order to avoid damage caused by
overheating. If the maximum store temperature is exceeded,
(flashing) is shown on the display.
Note: The controller is equipped with a store emergency
shutdown function, which prevents the store from being
loaded when the store temperature exceeds 95 °C.
S MX:
Maximum store temperature
Adjustment range: 2 ... 95 °C
Factory setting: 60 °C
DT S:
Set temperature difference
Adjustment range: 1,5..30,0 K
Factory setting: 10.0 K
RIS
Rise
Adjustment range: 1 ... 20 K
Factory setting: 2 K
CMX: Maximum collector
temperature
Adjustment range:
100 ... 190 °C
Factory setting: 120 °C
4.1.12 System cooling
When the adjusted maximum store temperature is reached,
the system stagnates. If the collector temperature increases
to the adjusted maximum collector temperature (CMX)
the solar pump is activated until the collector temperature
falls below the maximum collector temperature. The store
temperature may increase (subordinate active maximum
store temperature), but only up to 95 °C (emergency shut-
down of the store).
OCX:
Option system cooling
Adjustment range: OFF ... ON
Factory setting: OFF
4.1.11 Collector-limit temperature
Collector emergency shutdown
If the adjusted collector emergency shutdown temperature
(EM) is exceeded, the controller will switch off the solar
pump (R1) in order to protect the system against overheat-
ing (collector emergency shutdown). The factoring setting is
140 °C but it can be changed within the adjustment range of
110 ... 200 °C. If the temperature is exceeded,
(flashing) is
shown on the display.
EM: Collector emergeny shut-
down temperature
Adjustment range:
110 ... 200°C
Factory setting: 140 °C
If OREC is additionnally enabled:
If the store temperature is higher than the maximum store
temperature (S MX) and if the collector temperature is at
least 5 K below the store temperature, the solar system
remains activated until the store is cooled down below the
adjusted maximum temperature (S MX) via the collector
and the pipework.
If the system cooling function is enabled, (flashing) is
shown on the display. Due to the cooling function, the sys-
tem will have a longer operation time on hot summer days
and guarantees thermal relief of the collector field and the
heat transfer fluid.
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