D e lt a S o l
®
C/4
© RESOL 11103 deltasol_c/4.monen.indd
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4.1.16 Tube collector function
If the controller detects an increase in collector tempera-
ture by 2 K compared to the previously stored collector
temperature, the solar pump will be switched-on for about
30 seconds in order to detect the fluid temperature. After
this, the current collector temperature will be saved as a
new reference value. If the measured temperature (new
reference value) is exceeded by 2 K, the solar pump will
run for 30 seconds. If the switch-on difference between the
collector and the store is exceeded during the runtime of
the solar pump or the standstill of the system, the controller
will automatically switch to solar loading.
If the collector temperature deacreases by 2 K during stand-
still, the switch-on value for the tube collector function will
be recalculated.
O TC:
Tube collector function
Adjustment range: OFF ... ON
Factory setting: OFF
4.1.15 Recooling function
If the adjusted maximum store temperature (S MX) is
reached, the controller keeps the solar pump running in
order to prevent the collector from being overheated.
The store temperature may increase, but only up to 95 °C
(emergency shutdown of the store).
The solar pump is switched on as soon as possible (depend-
ing on weather conditions). It is switched off when the store
is cooled down to the adjusted maximum temperature via
the collector and the pipework.
OREC: Recooling
Adjustment range: OFF... ON
Factory setting: OFF
CMN: Collector minimum
temperature
Adjustment range: 10 ... 90 °C
Factory setting: 10 °C
4.1.13 Minimum collector function option
OCN: Minimum collector
function
Adjustment range: OFF / ON
Factory setting: OFF
The minimum collector temperature is the minimum tem-
perature 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 tempera-
tures. If the temperature falls below the minimum tempera-
ture, (flashing) is shown on the display.
CFR:
Antifreeze temperature
Adjustment range: -10 ...10 °C
Factory setting: 4,0 °C
4.1.14 Antifreeze function
OCF:
Antifreeze function
Adjustment range: OFF / ON
Factory setting: OFF
The antifreeze function activates the loading circuit between
the collector and the store when the temperature falls be-
low the adjusted antifreeze temperature. This will protect
the fluid against freezing or coagulating. If the adjusted anti-
freeze temperature is exceeded by 1 °C, the loading circuit
will be deactivated.
Note:
Since this function uses the limited heat quantity of the
store, the antifreeze function should be used in regions with
few days of temperatures around the freezing point.
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