Dometic RM 6270(L) - Manual (Page 25)

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Electrical installation
Electrical installation may only be carried out by qualified personnel.
The connection cables must be laid in such a way that they do not
come in contact with hot components of the unit/burner or with sharp
edges. The electrical installation must comply with national regulations
(EN 60335-2-24 for Europe). It is advisable to run the incoming supply
through an on-board fuse or automatic circuit breaker. The power
cable must be laid in such a way that it does not come in contact with
hot components of the unit/burner or with sharp edges.
Changes at the internal electrical installation or the connection of
other electrical components (e.g. additional fan, no Dometic part) to
the internal wiring of the appliance will expire the e1/ CE admittance as
well as any claims from guarantee and product liability!
Power line connection
The power must be supplied via a properly earthed socket outlet or
hardwired connection.
Where a socket outlet is used for the mains connection lead, the outlet
must be freely accessible.
It is advisable to run the incoming supply through an on-board fuse or automatic
circuit breaker. The power cable must be laid in such a way that it does not come
in contact with hot components of the unit/burner or with sharp edges.
If the connection cable is damaged it must be replaced by the
Customer Service at Dometic, or by respectively qualified personnel, in
order to prevent any hazards.
Battery connection
The machine's mains 12V connection cable is connected (observing correct
polarity) to a terminal strip.The cabling must be direct and by the shortest possible
route to the battery and alternator respectively.
The heating element circuit must be connected to the vehicle battery by a suitable
ignition operated relay in order that the 12V supply is only live while the vehicle
ignition is switched on. It is recommended that the electronic re-igniter and the
interior light is connected to the on-board auxiliary battery.
The 12V circuit must be protected with a 16A fuse.
If the appliance is installed in a caravan the respective leads for 12V+
and 12V- the connections A/B and C/D must not be connected to each
other on the caravan-side ( EN 1648-1).
6.9
6.9.1
6.9.2
A = ground heating element DC (white)
B = connection to the heating element DC (only live
while the vehicle ignition is switched on, red).
C = ground for lighting or/and reigniter (black),
D = connection for lighting or/and reigniter,
permanent DC (12V) available (violet).
Cross-sectional area of cable Length of cable
4mm² < 6 m
6mm² > 6 m