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Collector cooling function
OCC:
Option collector cooling
Adjustment range: OFF / ON
Factory setting: OFF
CMX:
Maximum collector temp.
Adjustment range:
70 ... 160 °C [150 ... 320 °F]
in steps of 1 °C [1 °F]
Factory setting:
110 °C [230 °F]
System cooling function
OSYC:
Option system cooling
Adjustment range: OFF / ON
Factory setting: OFF
DTCO:
Switch-on temperature diff.
Adjustment range:
1.0 ... 30.0 K [2.0 ... 60.0 °Ra]
in steps of 0.5 K [1 °Ra]
Factory setting:
20.0 K [40.0°Ra]
DTCF:
Switch-off temperature diff.
Adjustment range:
0.5 ... 29.5 K [1.0 ... 59.0 °Ra]
in steps of 0.5 K [1 °Ra]
Factory setting:
15.0 K [30.0 °Ra]
Store cooling function
OSTC:
Store cooling option
Adjustment range: OFF / ON
Factory setting: OFF
OHOL:
Holiday cooling option
Adjustment range: OFF / ON
Factory setting: OFF
THOL:
Holiday cooling temperature
Adjustment range:
20 ... 80 °C [70 ... 175 °F]
in steps of 1 °C [1 °F]
Factory setting:
40 °C [110 °F]
All manuals and user guides at all-guides.com
When the collector cooling function is activated, the
controller aims to keep the collector at an operational
temperature.
When the adjusted maximum store temperature is reached,
solar loading stops. If the collector temperature increases
to the adjusted maximum collector temperature, the solar
pump is activated until the collector temperature falls at
least 5 K [10 °Ra] below the maximum collector tempe-
rature. The store temperature may increase (subordinate
active maximum store temperature), but only up to 95 °C
[200°F] (emergency shutdown of the store).
If the collector cooling function is active,
is shown on the display.
Note:
This function will only be available if the system
cooling function (OSYC) is deactivated.
When the system cooling function is activated, the control-
ler aims to keep the solar system operational for a longer
time. The function overrides the maximum store tempera-
ture to provide thermal relief of the collector field and the
heat transfer fluid on hot days.
If the store temperature is higher than the maximum store
temperature S MX and the switch-on temperature diffe-
rence DTCO is reached, the solar system remains activated.
Solar loading is continued until either the store temperature
reaches 95 °C [200 °F] (emergency shutdown of the store),
the temperature difference falls below the adjusted value
DTCF or the collector emergency shutdown temperature
EM is reached.
If the system cooling function is active,
is shown on the display.
Note:
This function will only be available if the collec-
tor cooling function (OCC) is deactivated.
When the store cooling function is activated, the controller
aims to cool down the store during the night in order to
prepare it for solar loading on the following day.
If the adjusted maximum store temperature S MX is
exceeded and the collector temperature falls below the
store temperature, the system will be reactivated in order
to cool down the store. Cooling will continue until the store
temperature has fallen below the adjusted maximum store
temperature S MX again. A fixed hysteresis of 2 K [4 °Ra]
is set for this function.
Reference threshold temperature differences for the store
cooling function are DT O and DT F.
If no DHW consumption is expected for a longer period of
time, the additional holiday cooling option OHOL can be
activated in order to extend the store cooling function. The
adjustable temperature THOL then replaces the maximum
store temperature S MX as a switch-off temperature for
the store cooling function.
When the holiday cooling function is activated,
(flashing) are shown on the display.
While the holiday cooling function is active,
(flashing) are shown on the display.
and
(flashing)
and
(flashing)
and
,
and
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