Do not clamp or bind 12V cables or sensor cables
together with 230V cables. The cables should prefer-
ably not be placed close to each other. If the cables are
bundled, the risk of malfunction increases.
Do not connect the 12V source to the heating system
before the heating system is lled with glycol mixture.
12 VOLTS DC
Connect the cable (Figure L 1) between the control panel and the LPG boiler, the cable must not be extended. Only
use original Alde cables; these are available in various lengths.
• The 12-volt supply to the boiler must be routed directly from the battery via the vehicle’s main switch (Figure L 2)
or a separate switch (the boiler draws about 70 mA when it is in standby or switched off).
• A 5A fuse (Figure L 3) must be tted close to the battery. The positive and negative cable between the battery and
the boiler must have an cross-sectional area of 1.5 mm
2
if it is equal to or less than 20 metres in length (10 m for
the positive cable and 10 m for the negative cable). For longer cables, the area must be increased to 2.5 mm
2
.
• If a transformer is used instead of the battery, it must be of good quality, producing constant direct current as opposed to
pulsating direct current.
• The electrical connection from the boiler to any circulation pump in the expansion tank must be made using a two-
core cable of at least 0.5 mm
2
cross-sectional area (max length, 6 m). For longer cables, 0.75 mm
2
area. Fit the
cable to the two-pole contact and connect to the boiler’s contact (Figure L 7) and to the circulation pump’s contact
(Figure L 8).
230-240 VOLTS AC
• The boiler must be connected permanently to a 230 VAC supply and be protected with a 10 A fuse for a 2 kW
• Immersion heater and a 16 A fuse for a 3 kW immersion heater.
• 230 VAC must be well separated from 12 V.
• It must be possible to disconnect the power to the boiler, either via an easily accessible plug or via an omnipolar
circuit breaker.
• The installation must be carried out by a qualied person according to current national regulations.
• Only original connection cable from Alde should be used.
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