48
Switching hystereses HSt
Switching hysteresis is the difference between switch-on and switch-off temperature. I.e. a
thermostat set to 70°C with 10K hysteresis switches off at 70°C and on at 60°C.
Hystereses are not constant, but change with measured temperature. Setting range is be-
tween1 to 9K per 64°C.
The changing according to temperature has the advantage, that different consumers resp.
tanks can be used with the same settings at same time. Thus a pool with maximum tempera-
ture 30°C gets a lower hysteresis, a buffer tank with max. temperature 90°C a high one.
Each setting value of the selector switch (e.g. min1, min2, max etc.) has its own hystere-
sis.
The hysteresis of the differential values diff1, diff2 refer to the colder sensor. E.g. if the
colder sensor shows 64°C, the output is switched on increasing the difference diff + hystere-
sis 3K and switched off decreasing the difference value diff.
H1
diff 1
H5
max
H2
diff 2
H6
frost protection limit
H3
min 1
H7
reserve
H4
min 2
Example
:
H13
means hysteresis of
diff1
with
3
K per 64°C.
All hystereses are set to 3K per 64°C ex works.
Switching between hystereses H1
to H7, allocation of hystereses to
switching hystereses according to
the program
“3” means 3K per 64°C
,
setting range: 1 to 9K per 64°C
ew
= 3K
Input loop starts again
E
xit from menu happens by pressing the yellow „
Eingabe
“ key for 2
seconds, turning the selector switch or automatically after one mi-
nute.
2 sec
2 sec
short
short
short
Setting of hystereses
Selecting next hyste-
resis (up to H7)
Содержание HZR 65
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