Indel Webasto Compact Classic - Electrical Connections; Wiring and System Connection

8 Electrical Connecons
The electronic unit is a double supply voltage device: this means that the same unit
can be used in both 12 Vdc and 24 Vdc systems. Maximum supply voltage is 17 Vdc
for a 12 Vdc system and 31.5 Vdc for a 24 Vdc system. Maximum environmental
temperature is 55°C. The electronic unit has a built-in protecon which stops
compressor operaon if its temperature is too high.
The electronic unit must always be directly connected to the baery or to the main
switch in compliance with + and - polarity and is protected against reversed polarity
connecon. A fuse must be installed in the cable + as close as possible to the baery.
Pay special aenon to the size of power cables. In the case of a 12 Vdc system (see
diagram), use a fuse sized for a current of at least 15 A. With 24 Vdc systems instead
7.5 A. If using a main switch, it must be sized so as to support a current of at least
20 A. For cable sizing, in addion to referring to CEI 20-40 “Handbook of electrical
cables with operang voltage up to 450/750 V", you can make use of Table 3 or Table
4, intending the distance between the baery or distribuon panel and the electrical
unit as length.
In order connect the unit to the boat’s electrical system, proceed as follows:
• Before turning on the appliance, check to make sure that the voltage of the
electrical system and/or baery complies with that which is indicated on the
unit’s data plate.
• All electrical devices such as cables, connectors, alternators, regulators and
baeries should be maintained in accordance with regulatory guidelines.
• The same baery, having a capacity of at least 90 Ah, must permit the
accumulaon of an appropriate amount of energy during motor operaon.
• Always use cables with sucient secon (see recommendaons in the
corresponding table).
• Always use copper or nned mul-conductor wire, suitable for marine
environments.
• Connect the unit directly to the baery or to the relave main switch and
make sure that the system is equipped with an electric device that’s capable of
protecng the circuit against possible overcurrents.
• Verify that the size of the main electrical system is enough to power all the units
connected to it.
• Avoid using any switches, plugs or juncon boxes that are not strictly necessary.
User Manual
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