Dc Kit 1 With Dometic Ca1000; Dc Kit 2 With Dometic B1600 / Systems With Enable Input - Waeco ECL-75 Montage- Und Bedienungsanleitung

_ECL-75_102.book Seite 34 Donnerstag, 6. Mai 2010 4:43 16
Technical description
Keys for the circuit diagrams
Note the circuit diagrams on pages 3 to 8:
Character in
circuit Explanation
diagram
A Starter battery
B Additional battery
C Remote control
D Switching off using power relay
E Switching on using power relay
F Electronic fuse
6.1

DC kit 1 with Dometic CA1000

Circuit diagram, see page 3
Roof air conditioner: Dometic CA1000
Charging current distributor: ECL-75
Inverter: PerfectPower PP1000 (item no. 8100-12VS)
The light system voltage UD+ is measured. If this voltage exceeds a variable voltage
value Ue (12.5 V - 14.0 V), the relay contact 30/87 (Batt. I/Batt. II) of the power relay is
closed. The starter battery and the additional battery are therefore connected in parallel
with low resistance and are charged together by the light system.
With UD+ > Ue, contact I2 is closed with I3. If the light system voltage falls below a
variable threshold value Ua (10.5 V - 12.5 V), due to an increased load because of the
air conditioner, relay contact 30/87 (Batt. I/Batt. II) is opened. Relay contact I2, I3 is also
opened. This switches off the air conditioner compressor (the fan continues to run). The
light system now charges the starter battery (the fans consume little power). If the caravan
has a connecting cable between the two batteries, the additional battery is also charged.
If the charging voltage of the light system UD+ reaches the set voltage value Ue again,
the power relay and the control relay switch on again. The compressor motor starts again.
If the vehicle engine is not switched on, UD+ = 0 V, relay contact 30/87 (Batt. I/Batt. II) is
opened and relay contact I2, I3 is closed. The air conditioner can be operated and only
takes power from the additional battery. If the battery voltage falls below Ubatt = 10.5 V,
the inverter switches off.
6.2

DC kit 2 with Dometic B1600 / Systems with enable input

Circuit diagram, see page 4
Roof air conditioner:
Dometic B1600, systems with enable input approved by the manufacturer
Charging current distributor: ECL-102
Inverter: ECW-012VS
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ECL-75, ECL-102