Resol BASIC controller Manual For The Specialised Craftsman page 23

4
COL 4
CEM
Collector emergency temperature
PUSH
Adjustment range: 80 ... 200 °C
in steps of 1 °C
Factory setting: 140 °C
Switch-on hysteresis: -10 K
OK
OCCO
PUSH
OFF
BACK
PUSH
a b c
4 Collector emergency shutdown
When the collector temperature exceeds the adjusted collector emergency tem-
perature, the solar pump (R1 / R2) switches off in order to protect the system
components against overheating (collector emergency shutdown). If the maximum
collector temperature is exceeded,
OCCO
Selection: OFF / ON
Factory setting: ON
WARNING!
ON
CMAX
Collector maximum temp.
Adjustment range: 70 ... 160 °C
in steps of 1 °C
Factory setting: 105 °C
Switch-on hysteresis: -5K
Collector cooling
The collector cooling function keeps the collector temperature within the operat-
ing range by heating the store. If the store temperature reaches 95 °C the function
will switch off for safety reasons.
When the store temperature exceeds the adjusted maximum store temperature,
the solar system switches off. If the collector temperature increases to the adjusted
maximum collector temperature, the solar pump is activated until the collector
temperature falls below the maximum collector temperature. The store tempera-
ture may then exceed the maximum temperature, but only up to 95°C (emergency
shutdown of the store).
If the collector cooling is active,
is displayed (flashing).
Note
If the drainback option is activated, the adjustment range of the collector
emergency temperature is changed to 80 ... 95 °C. Factory setting will be
95 °C.
Risk of injury! Risk of system damage by pressure surge!
If water is used as the heat transfer fluid in pressureless systems,
water will boil at 100 °C.
In pressureless systems with water as the heat trans-
fer fluid, do not set the collector limit temperature
higher than 95 °C.
is displayed (flashing).
Note
This function is only available if the system cooling function and the heat
dump function are not activated.
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