wallas 88DU, Installation, Operation And Service Instructions

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88DU
Installation
GB
490070GB
Checking the connection
The device consumes most power when it is started up (glowing). At this point
voltage losses are also at their highest. During the glowing phase, the voltage must
be at least 10.7 V measured at the quick coupling. See picture 1. If the voltage is
lower than this, the device may not start.
If you handle an electronics card detached from the device, take care to
avoid damage due to static electricity.
Picture 1.
24V direct current system
Dewatering loop
If the cables will be above the stove, a
dewatering loop is required. This prevents
condensated water from running to the
circuit board.
Device’s quick
coupling
Jointing
A jointing should only be made in long
power cords, if necessary, in which case
the cord must be replaced with a thicker
one. The jointing cannot be further than 1
meter from the device.
Main switch
Main fuse
Power cord
2
13
Electrical connections of the device
12V direct current system
Connect the red wire of the power cord to the plus terminal of the battery and the
black or blue wire to the minus terminal. A 15 A main fuse must be installed near
the battery on the red plus wire of the power cord. See picture 1.
24V direct current system
If the device is to receive power from a 24V system, always connect a charging
voltage reducer and a 12V battery before connecting the device. Without the bat-
tery the voltage reducer will not be enough on its own as it cannot generate the
large amount of current the glow plug requires. After the 12V battery, the connec-
tion is the same as in a 12 V system.
88DU_GB.indd 11 11.06.2008 10:42:39
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