7
en
The DIP switches (A) can be used for activating (ON) or deactivating (OFF) the
following functions:
• Manual mode (DIP switch 1)
• Maximum temperature limitation (DIP switch 2)
• Antifreeze function (DIP switch 3)
• Minimum temperature limitation (DIP switch 4)
With the potentiometre on the left-hand side (E), the switch-on temperature dif-
ference can be adjusted (in K).
With the potentiometre on the right-hand side (D), the minimum speed of the HE
pump can be adjusted, see chap. 3.8 on page 8.
With the lower potentiometre (C), the temperature for the maximum or minimum
temperature limitation can be adjusted (in °C).
With the jumper (B), the PWM profile of the output signal (solar or heating) can
be selected.
Note
Pump speed control is only possible if a HE pump with a PWM input is
used.
3.3
Switch-on temperature difference
ON
OFF
1
2
3
4
E
The controller calculates the temperature difference
between the temperature sensors S1 and S2. If the dif-
ference is larger than or identical to the switch-on val-
ue adjusted with the potentiometer E, the relay will be
switched on. The operating control LED flashes green.
If the temperature difference falls below the set value
by 1.6 K (non adjustable hysteresis), the controller de-
activates the relay.
For commissioning or maintenance work, the relay
can be permanently energised by means of the manual
mode. The manual mode can be activated or deactivated
respectively with DIP switch 1. If the manual mode is
active, the operating control lamp flashes red and green.
3.4
Manual mode
3.5
Maximum temperature limitation
With DIP switch 2, the temperature limitation can be
activated as a maximum temperature limitation. The
limit temperature can be adjusted by means of the po-
tentiometer C. The sensor connected to the terminals
S2 is used as the reference sensor. If the store tem-
perature reaches the adjusted maximum temperature,
the store will no longer be loaded in order to avoid
damage caused by overheating. If the store tempera-
ture exceeds the maximum value, the operating con-
trol lamp flashes red.
3.6
Antifreeze function
With DIP switch 3, the antifreeze function can be acti-
vated. The antifreeze function activates the loading cir-
cuit between the collector and the store when the col-
lector temperature falls below +4 °C. This will protect
the fluid against freezing or coagulating. If the tempera-
ture at S1 r5 °C, the pump will be switched off.
When the antifreeze function is active, the operating
control lamp flashes quickly.
Adjustment range: 2 … 16 K
Factory setting: 6 K
Activated by default
(DIP switch in ON position)
Adjustment range: 20 … 90 °C
Factory setting: 60 °C
Deactivated by default
(DIP switch in OFF position)
Note
Since this function uses the limited heat quantity of the store, the anti-
freeze function should be used in regions with few days of temperatures
around the freezing point.
Deactivated by default
(DIP switch in OFF position)
Controller in automatic mode
C
ON
OFF
1
2
3
4
ON
OFF
1
2
3
4
ON
OFF
1
2
3
4
A
ON
OFF
1
2
3
4
A
ON
OFF
1
2
3
4
ON
OFF
1
2
3
4
A
ON
OFF
1
2
3
4