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ページを印刷する4.1.10 Collector emergency shutdown
temperature
EM:
Collector emergency shut-
down temperature
Adjustment range:
230 ... 400 °F
Factory setting: 285 °C
4.1.11 System cooling
OCX:
System cooling option
Adjustment range: OFF ... ON
Factory setting: ON
CMX:
Collector maximum temp.
Adjustment range:
210 ... 380 °F
Factory setting: 250 °F
If OREC is additionally enabled:
4.1.12 Minimum collector function
OCN:
Mimimum collector function
Adjustment range: OFF / ON
Factory setting: OFF
CMN:
Minimum collector tempe-
rature
Adjustment range:
14 ... 195 °F
Factory setting: 50 °F
4.1.13 Antifreeze function
OCF:
Antifreeze function
Adjustment range: OFF / ON
Factory setting: OFF
CFR:
Antifreeze temperature
Adjustment range:
14 ... 50 °F
Factory setting: 40 °F
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If the adjusted collector emergency shutdown temperature
(EM) is exceeded, the controller will switch off the solar
pump (R1) in order to protect the system against overheating
(collector emergency shutdown). The factoring setting is
285 °F but it can be changed within the adjustment range of
230 ... 400 °F.
(flashing) is displayed.
When the adjusted maximum tank temperature is reached,
the system stagnates. If the collector temperature increases
to the adjusted maximum collector temperature (CMX),
the solar pump is activated until the collector temperature
falls below the maximum collector temperature. The tank
tempe rature may increase (subordinate active maximum
tank temperature), but only up to 203 °F (emergency shut-
down of the tank).
If the tank tempe rature is higher than the maximum tank
temperature (S MX) and if the collector temperature is at
least 10 °Ra below the tank temperature, the solar system
remains activated until the tank is cooled down below the
adjusted maximum temperature (S MX) via the collector
and the pipework.
If the system cooling function is enabled,
shown on the display. Due to the cooling function, the sy-
stem will have a longer operation time on hot summer days
and guarantees thermal relief of the collector field and the
heat transfer fluid.
The minimum collector temperature is the minimum
temperature which must be exceeded for the solar pump
(R1) to switch on. The minimum temperature prevents the
pump from being switched on too often at low collector
temperatures. If the temperature falls below the minimum
temperature,
(flashing) is shown on the display.
The antifreeze function activates the loading circuit between
the collector and the tank when the temperature falls below
the adjusted antifreeze temperature. This will protect the
fluid against freezing or coagulating. If the adjusted antifreeze
temperature is exceeded by 2 °F, the loading circuit will be
deactivated.
Please note:
Since this function uses the limited heat quantity of the tank,
the antifreeze function should be used in regions with few
days of temperatures around the freezing point.
(flashing) is