Electrical Connection - Waeco Mobitherm MWH-020/N Montage- Und Bedienungsanleitung

MWH-20-N_60-N_EB_10s.book Seite 31 Montag, 5. Februar 2007 5:57 17
Mobitherm
8.2 Connecting to the engine cooling water system
Because most boat engines are cooled with a heat exchanger, it makes
sense to supply the water heater with cooling water from the engine.
Caution
a
Follow the manufacturer's instructions when connecting a water
heater.
The following instructions are only general in nature.
If the engine circuit (fig. 5 6 and 7, page 5) of the water heater is
connected to the engine cooling water system, you must use a hose
which is flexible and suitable for the cooling water temperature.
On engines cooled by sea water, take the water for the heater from the
hottest point behind the engine.
Connect the cooling water line from the engine (fig. 5 6, page 5) to the
intake of the water heater's engine circuit (fig. 5 10, page 5).
We recommend fitting an air nipple on the hose of the water heater.
Connect the return water to the engine (fig. 5 7, page 5) to the outlet of
the engine circuit of the water heater (fig. 5 5, page 5).
Make sure the connections for the cooling water circuit of the water heater
are fitted correctly and not swapped with the fresh water connections.
The water heater does not have to be mounted at the same level as the
engine, but it is advisable. For efficient hot water generation, the water
temperature in the engine circuit (fig. 5 6 and 7, page 5) of the water heater
should not be less than 50 °C.
8.3

Electrical connection

The electrical connection for the heating cartridge of the water heater is fitted
with a tube and socket and can be directly connected to an earthed socket,
which must be near the water heater.
Caution
a
Modifications to the original electrical connection of the water heat-
er are not permitted.
Always comply with the applicable standards and regulations for
electrical work and connections.
Connecting the water heater
31