D e lt a S o l
®
C/3
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4.1.9 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,
will be shown.
Please note:
The controller is equipped with a store emer-
gency shutdown function, which prevents the store from
being loaded when the store temperature exceeds 95 °C.
S MX
:
Maximum store temp.
Adjustment range: 2..95 °C
Factory setting: 60 °C
CMX:
Collector maximum temp.
Adjustment range 100... 190 °C
Factory setting 120 °C
4.1.11 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
tempe rature 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
4.1.10 Collector emergency shutdown temperature
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 overheating
(collector emergency shutdown). The factoring setting is
140 °C but it can be changed within the adjustment range
of 110 ... 200 °C. (flashing) is displayed.
EM
:
Collector emergency shut-
down temperature
Adjustment range:
110 ... 200 °C
Factory setting: 140 °C
If OREC is additionally enabled:
If the store tempe rature 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.
CMN
:
Minimum collector temperature
Adjustment range: 10 ... 90 °C
Factory setting: 10 °C
4.1.12 Option collector minimum limitation
OCN:
Mimimum collector function
Adjustment range: OFF / ON
Factory setting: OFF
The minimum collector temperature is the minimum
temperature which must be exceeded for the solar pump
(R1) to switch on. The minimum temperature prevents the
pump from being switched on too often at low collector
temperatures. If the temperature falls below the minimum
temperature, (flashing) is shown on the display.