Resol DeltaSol A, Manual For The Specialized Craftsman

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7
en
The antifreeze function activates the loading circuit between
the collector and the tank when the collector temperature
falls below +4 °C / 39,2 °F. This will protect the fluid against
freezing or coagulating. If the temperature at S1 reaches
+5 °C / 41 °F, the pump will be switched off.
When the antifreeze function is active, the operating control
lamp flashes quickly.
4 Examples
4.1 Standard solar system with 1 tank
S1
RO
S2
⌯
Use the grounding terminal!
The controller calculates the temperature difference between collector sensor
S1 and tank sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference, the pump (R1) will be switched on and the tank
will be loaded. If the temperature difference falls by 1.6 K / 2.9 °Ra (non-adjustable
hysteresis) below the adjusted temperature difference, the pump will be switched
off.
S1 = Collector sensor
S2 = Tank sensor
RO = Solar pump
⌯
1
S1 S2
2 3 4 7
RO RC N N L
8 9 10 11
2 2
3 3
Power
supply
4.2 Switch-on temperature difference
Adjustment range: 2 … 16 K
Factory setting: 6 K
The controller calculates the temperature difference between
the temperature sensors S1 and S2. If the difference is larger
than or identical to the adjusted nominal value, the relay will
be switched on. The operating control LED is green. If the
temperature difference falls by 1.6 K / 2.9 °Ra (non-adjustable
hysteresis) below the nominal value, the relay will be switched
off.
4.3 Antifreeze function
Deactivated by default
Note
Since this function uses the limited heat quantity of the tank, the anti-
freeze function should be used in regions with few days of temperatures
around the freezing point.