KT-Elektronik SOL3-3, Installation And Owner'S Manual, Page: 36 / 88

Installation and operating manual KT-Elektronik
A) The collector temperature exceeds the storage temperature by more than the
turn-on threshold (8 K). The collector pump is turned on.
B) The collector temperature dropped below the turn-off threshold (SF + 4 K). The
collector pump is turned off.
C) The collector temperature exceeds the turn-on threshold again. The pump is
turned on as soon as the minimum idle time elapses.
D) The collector temperature dropped and falls below the turn-off threshold again
(SF + 4 K). The collector pump is turned off.
E) The collector temperature exceeds the storage temperature by more than the
turn-on gap (8 K). The collector pump is turned on.
F) The collector temperature quickly dropped below the turn-off threshold again.
The pump remains running as long as the minimum running time has not
elapsed.
Parameters for the basic function:
Setting FS Value range Description
Direct input
8 K 1 to 50 K Turn-on threshold
Direct input
4 K 1 to 50 K Turn-off threshold
Minimum run time
PA3
60 s 0 to 1800 s Minimum run time for collector pump
Minimum idle time
PA3
180 s 0 to 1800 s Minimum idle time for collector pump
Note:
The turn-on condition only applies if the actuator to be turned on is turned off. The
turn-off condition only applies if the actuator to be turned off is turned on.
By placing sensors at positions which only allow an insufficient measurement of
relevant temperatures and by an inadequate selection of settings at run-time
respectively by delaying control signals, it may be possible to bring the controller to
operate switches that conflict with the goal of a maximum solar energy.
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EB_37383_SOL3-3_EN002