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5. Commissioning
Setting the language
When the ice and snow detector is switched on for the first time, you will be asked to set the language for the
menu navigation. This language will be used as the menu language and saved as a factory default setting. The
language can be selected with the help of the '+' and '-' keys. 'SET' saves the setting, 'ESC' discards the change
and postpones it until the detector is switched on the next time.
Sensor and parameter configuration
A type 3354 sensor is preset in the factory default setting; all parameters are set to the usually suitable values.
If a type 3355/3356 sensor (or one of its predecessor types 3351, 3352 or 3353) is used or another sensor
arrangement (two sensors, slab idle temperature operation etc. ) is desired, the sensor type(s) need to be set in
the menu (more information in the chapters below). Additionally the parameters for the switch-on and switch-off
temperatures and the minimum heating time need to be adapted to the desired operating mode.
Setting the moisture limit
The limit for moisture detection is factory set to 50. With the help of a test measurement when the sensor is dry,
it can be determined if this value needs to be adapted. Depending on the requirement for an early or late
detection of moisture, the moisture limit should be set to 10 (early) to 20 (late) units higher than the value
determined during the "dry" test measurement. Note that the power consumption may rise in case of an "early"
setting.
If the heating is activated too early or too late in actual operation, the moisture limit should be corrected
accordingly. It is recommended to change the setting in steps of 5 until the system works in a satisfactory way.
Type 3354 sensor
If the sensor is installed in a gutter or a similar location, the factory default setting usually does not need to be
changed. If necessary, however, a test measurement can be done and the moisture limit can be adapted
accordingly.
Type 3355, 3356 sensor
As the sensor environment and the installation situation may influence moisture detection in case of slab
installations, it is highly recommended to make a dry test measurement up to 30 °C and adapt the moisture limit
according to the requirements (see above).
Type 3352, 3353 sensor
The same applies as for the type 3355/3356 sensor. Please note, however, that a dry test measurement will
only result in reliable values if the ambient temperature is below 5 °C.
Functional test of the sensors
Attention: In case of functional tests with simulated temperatures the following needs to be taken into account:
After a moisture measurement the moisture sensors (due to their functional principle) have inhibit times of
approx. 15 to 25 minutes (depending on the type) before the ambient temperature can be measured and of
approx. 20 to 30 minutes before the moisture can be measured again. The functions of the snow and ice
detector and of the sensors are adapted to this behaviour and to the slab and outdoor temperature which in
reality only change very slowly. If very quick temperature changes are simulated during a functional test or the
detector is reset by switching it off and back on, this may lead to faulty measurements and a temporarily
"unreasonable" reaction of the system.
In order to determine the current moisture value the menu "Sensor test" is used. In this menu the moisture
measurement can be started independently from the whole system and the measured moisture value can be
read. This can be done during a typical switch-on situation (temperature and moisture correspond to a typical
case of moisture) or with the help of a "dry" measurement during which the sensor surface is absolutely dry. In
case the dry measurement is done in the summer, it needs to be taken care that the sensor is protected from
direct sunlight during and at least 30 minutes before the measurement.
Functional test of the heating
The heating may be activated and deactivated manually for test purposes; refer to chapter "Operation, menu
and error codes".
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