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Heatcom 1873 Instructions D'installation page 6

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5
WARRANTY
EXPLAINING OPERATING MODES
The basic operation of an ice detection channel can be selected via the operating mode.
Temp.
Moisture
This is the normal operating mode of an ice detection channel. In this mode the temperature must first
fall below the activation point, and a sufficiently high moisture measurement then activates the heating
circuit. If channel coupling is used, the moisture measurement of another sensor in the zone may also
activate the heating circuit.
T
Moi+BaseTemp
With regard to temperature and moisture measurement, the channel operates as in normal operation, but
activates the base temperature mode if the base temperature is not reached. This is use-ful to shorten the
time it takes for very slow heating systems to reach a defrost and drying temperature in case of moisture.
The base temperature mode is only possible in the "System" or "Multi Channel" configuration.
Temperature
In the temperature mode, only the temperature is measured but not the moisture. The heating will be
active if the temperature of the heating area is below the activation temperature.
Off
The ice detection channel is switched off.
MOISTURE TRESHOLD & MEASUREMENT
The moisture threshold can be used to adjust the sensor's sensitivity with regard to the detection of water,
ice or snow on the sensor. The moisture threshold can be set within a range of 0.5 to 9.5. Low values
mean high sensitivity.
The basic setting for the moisture threshold should be 1 to 2 points above the dry value indicated on the
sensor. If no information is available on the sensor, a test measurement can be triggered via the menu
when the sensor is dry and the deter-mined value can be used as the dry value.
If the system switches the heating system on too early, i.e. if there is very little moisture or the sensor is
dry, the moisture threshold should be increased. If the system switches on the heating system too late,
the moisture threshold should be reduced.
Note: If the moisture threshold is too low, the heating system may be permanently activated during times
when the temperature is below the activation temperature. This can lead to an increased energy con-
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