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S08 MAINTENANCE
COOLANT
WATER & ANTI-FREEZE
Please refer to the Fluids section for complete
information.
WATER BOILER
A water boiler can be connected to the engine coolant
circuit. If the boiler is located above the engine, an
additional recovery tank must be installed above the
boiler. Ducts to the boiler must be in accordance with
high temperature and high pressure. Never attempt to
use flexible hoses supplied from a hardware store.
A specic boiler kit is available from Nanni Industries.
Please contact your nearest Nanni representative
for more information. The amount of coolant must
be adapted depending the model of water boiler to
completely ll the coolant system.
COOLANT EXPANSION
When the engine is running, the internal temperature is
high ; as a result, the coolant liquid expands its volume.
The heat exchanger is designed to accomodate this
normal and physical expansion.
Make sure not to overll the heat exchanger when lling
with coolant.
NOTE !
The use of an anti-siphon is mandatory if the exhaust
elbow is below the water line at full load or less than
200 mm above it. A siphon is mandatory in sailboats :
there is a risk of water entry into the engine.
A raw water lter must be installed between the raw
water intake and the raw water pump of the engine.
COOLANT LEVEL
DANGER !
Never open the coolant lling cap or any plug of the
cooling system when the engine is operating or still
warm. Steam or hot fluid can spray out. Prevent potential
injuries !
Check the coolant level before starting the engine.
1. Stop the engine and remove the key from the panel.
2. Unscrew the ller cap to the rst step and let
pressure to decrease before removing it completely.
3. Correct level should be at bottom lip of the cap inlet
ller.
4. You may top-up with clean water only, if amount to
ll is very remote. Use glycol mix if tank is almost
empty.
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