CM4.65 & CM4.80 - Craftsman Marine BV

6
Calorifier installation
Calorifier in
Engine
Calorifier in
Engine
B
Calorifier out
Engine
Calorifier out
Engine
A
normal operation
bypass operation
Connecting a calorifier to the engine Ball valves Header tank and bleeding
Calorifier/water heater connection points come fitted as
standard on this engine. It’s important that the calorifier
is installed according to the installation manual
provided by the manufacturer.
The engine coolant connection on the calorifier should
be connected to point A, the coolant return should be
connected to point B.
In case of a malfunction of the calorifier or one of its
components it’s important that it can be disconnected
from the engine’s cooling circuit. It is advised to add
ball valves and a bypass line. In normal operation the
bypass line is closed. When the coolant lines to the
calorifier are closed, the bypass line must be opened,
otherwise, part of the engine cooling circuit is interrupted
(see schematic above).
Note that the ball valves should not restrict the
waterflow and must have a minimum ID of 12mm.
With the calorifier installed a header tank must be
added to the cooling circuit of the engine. In case the
water heater has to be placed above the engine header
tank, the engine water hose circuit must be equipped
with an air bleeder valve on the highest point.
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