INSTALLATION
US / WHISPER 15/20 ULTRA - Three Phase / October 2008 / Copyright © 2008 Mastervolt 9
The tank has to be placed close to the generator. When it
is mounted above the top of the manifold the liquid in the
tank will be drained when the cap on the manifold is taken
off. When keel cooling or radiator cooling is applied the
system will not be pressurised. A cap without release
valve should be applied. Refer to the special manual for
these applications.
2 RAW WATER SUPPLY
For raw water supply the following installation materials
are required: -a skin fitting - a sea cock - a water strainer -
hoses and clamps. In order to keep the suction resistance
in the line at a minimum, the sea water intake system (i.e.
sea cock, tru-hull fitting, inlet filter, etc.) must have the
following inner diameter at least:
Model Minimum inner
diameter
Whisper 15 Ultra Three Phase 3/4" (19 mm)
Whisper 20 Ultra Three Phase 1" (25.4 mm)
The suction hose should be kept as short as possible.
Raw water plumbing should avoid bends as much as
possible.
Restriction of raw water flow, caused by kinked hoses,
undersized pipes or connections, will reduce the engine
cooling capability. This is the main cause for overheating
of an engine.
After running the generating set for the first time, check the
coolant flow rate using a stopwatch and by holding a pail
of a known volume under the wet-exhaust outlet. The flow
rate should be according to the data in the users manual
1
2
3
4
5
6
7
24"
60cm
60cm
24"
60"
150cm
Max.
Min.
Min.
5cm
2"
Fig. 8. Internal cooling system
1 Water level;
2 Water/exhaust separator;
3 Seacock;
4 Waterlock;
5 Air vent;
6 Water strainer;
7 Seacock.
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