Caleffi solar iSolar 2 매뉴얼 - 페이지 13
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페이지 인쇄4.1.8 ∆T -regulation
DT O:
Switch-on temperature diff.
Adjustment range:
2,0 ... 40,0 °Ra
Factory setting: 12.0
DT F:
Switch-off temperature diff.
Adjustment range
1,0 ... 38 °Ra
Factory setting 8.0 °Ra
Please note: Switch-on temperature difference DO must
be at least 2 °Ra higher than the switch-off tempe rature-
difference DF.
DT S:
Set temperature difference
Adjustment range:
3,0..60,0 °Ra
Factory setting: 20.0 °Ra
RIS:
Rise
Adjustment range:
2 ... 40 °Ra
Factory setting: 4 °Ra
4.1.9 Maximum tank temperature
S MX:
Maximum tank temp.
Adjustment range:
-40 ... +480 °F
Factory setting: 140 °F
This function is a standard differential control. If the switch-
on differential is reached (DT O), the pump is operated. The
pump runs at 100% speed for 10 seconds. After this period,
the pump runs at minimum pump speed (nMN = 30 %). If
the temperature difference reaches the adjusted set value
(DT S), pump speed will increase by one step (10%). If the
difference increases by 2 K (RIS), pump speed will increase
by 10 % respectively until the maximum pump speed of 100
% is reached. The response of the controller can be adapted
via the parameter „Rise". If the temperature difference falls
below the adjusted switch-off temperature difference
(DT F), the controller switches off.
If the adjusted maximum temperature is exceeded, the tank
will no longer be loaded in order to avoid damage caused by
overheating. If the maximum tank temperature is exceeded,
will be shown.
Please note: The controller is equipped with a tank emer-
gency shutdown function, which prevents the tank from being
loaded when the tank temperature exceeds 295°F.
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