Thetford DC558 - Manuel (Page 7)

Installation Manual 7
Connect the Electrical Components
Electrical current necessary:
DC Operation DC558XX 12 volts DC voltage (9.6 volts min. - 17 volts max.)
24 volts DC voltage (23.8 volts min. - 27.0 volts max)
This refrigerator operates on DC electrical sources. Operation out of these limits may damage the refrigerator’s electrical circuit parts
and will void the warranty.
Make no changes to any of the electrical wiring supplied with the refrigerator. Any changes tha you would make to the electrical wiring
will void the warranty.
Connect the 12/24 volts DC supply:
To reduce the risk of electrical interference from other DC appliances and induction from voltage spikes:
- The refrigerator must have an independent 12/24 volt DC supply.
- Route the DC power supply wires including the fuse directly from the battery to the refrigerator.
- Twist the DC power supply wires from the battery to the refrigerator.
The electronic unit is protected against reverse battery connection. For protection during installation, a
fuse must be mounted in the + cable as close to the battery as possible. A 15A fuse for the 12V and a 15A
fuse for the 24V circuits are recommended. If the main switch is used, it should be rated to a current of min.
20A. The wire dimensions in Fig. 4 must be observed. Avoid extra junctions in the power supply system to
prevent voltage drop from affecting the battery protection setting.
NOTICE