68
730.138 | 08.1
EN
Switch-off temperature difference external heat exchanger:
Factory
setting
Adjustable
down to
min.
Adjustable
up to max.
Description
3 K
-
-
When the switch-off temperature difference between
the secondary side of the external heat exchanger
and the storage tank is reached, loading of the stor-
age tank is stopped. This value cannot be changed.
Maximum collector temperature:
Factory
setting
Adjustable
down to
min.
Adjustable
up to max.
Description
130 °C
Minimum
collector
temperature
+0 K
180 °C
When the maximum collector temperature is reached,
the solar circuit pump switches off. When the tem-
perature drops to 3 K below the defined maximum
value, the solar circuit pump switches on again.
Minimum collector temperature:
Factory
setting
Adjustable
down to
min.
Adjustable
up to max.
Description
0 °C
0 °C
Maximum col-
lector tempera-
ture -0 K
Only when the minimum collector temperature is
reached, and in consideration of the other switch-
on conditions, does the solar circuit pump switch
on. This value can be increased up to 0 K below
the defined maximum collector temperature.
Switch-on temperature difference return increase:
Factory
setting
Adjustable
down to
min.
Adjustable
up to max.
Description
6 K
Switch-off
temperature
of return
+ K
50 K
When the switch-on temperature difference be-
tween storage tank temperature and heating return
temperature is reached, the switching valve is acti-
vated and water flows through the storage tank.
Switch-off temperature difference return increase:
Factory
setting
Adjustable
down to
min.
Adjustable
up to max.
Description
3 K
0 K
Switch-on
temperature of
return - K
When the switch-off temperature difference between
storage tank temperature and heating return tem-
perature is reached, the switching valve returns to its
initial state. The difference between the switch-on
temperature difference and the switch-off tempera-
ture difference for return increase must be at least
K, and is barred from being set any lower.
Summary of Contents for SOLCU
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