2.3
Typical installation with electric generator
below the water line (fig. 5)
1
Raw water intake
2
Intake valve
3
Drain valve
4
Water filter
5
Anti-siphon valve
6
Barrel muffler
7
Silencer
8
Exhaust through-hull
9
Generating set
10
Anti-siphon drain hose
11
Water line
A
- Hose - internal diameter 50 mm (1.96")
B
- Hose - internal diameter 15 mm (.59")
C
- Clamps
D
- Hose - internal diameter 50 mm (1.96")
2.4.
Typical installation of electric generator with
"E/G" separator above (fig. 6) and below
(fig. 7) the water-line
References for figure 6:
1
Raw water intake
2
Intake valve
3
Drain valve
4
Water filter
5
Electric generator
6
Barrel muffler
7
"E/G" Separator
8
Exhaust through-hull
9
Silencer
10
Gas exhaust
11
Water line
References for figure 7:
2
Intake valve
3
Drain valve
4
Water filter
5
Anti-siphon valve
6
Barrel muffler
7
"E/G" Separator
8
Exhaust through-hull
9
Silencer
10
Gas exhaust
11
Water line
12
Drainage
13
Anti-siphon valve
A
- Hose -inside diameter 50 mm (1.96") , suitable for
raw water/exhaust gas.
B
- Hose - inside diameter 15 mm (.59"), suitable for raw
water.
C
- Clamps.
D
- Hose - inside diameter 40 mm (1.57"), suitable for
exhaust gas (Max 70 °C (158 °F)).
E
- Hose - inside diameter 25 mm (1"), suitable for raw
water.
WARNING
WARNING
WARNING
The measurements should correspond exactly.
In order to have a better sound damping it is
recommended to adopt a silencer, on the "D"
tube, at the distance of 40" from the
"E/G" separator.
2.5
Components
The raw water intake system must be separate from
the one for the engines propelling the boat.
1
- Direct raw water intake 1/2"
If the unit is installed more than 40" above the water-
line, a check valve should be fitted after the sea
intake (fig. 8, ref. 1) to prevent the water circuit
emptying when the motor is off. If this empties, the
rotor of the water pump might be damaged during
start up; for the same reason, when the unit is first
started up, the suction tube from the valve to the
pump should be filled manually.
2
- Ball valve (general) 1/2"
3
- Ball valve (drainage) 1/2"
This is used to drain the cooling system of the electric
generator for general maintenance or when a long
period of inactivity is expected.
4 -
Water filter (can be inspected)
This must provide sufficient protection for the cooling
circuit from the entrance of mud, sand and seaweed.
Water pump flow for IS9.5 is 6.6 gal/min.
The filter mesh should be very fine. Mesh 2 - 470
micron is recommended, other sizes do not give
good filter performance.
5
- Anti-siphon valve: this is a valve that brings the cooling
circuit back to atmospheric pressure when the motor
is turned off, thus avoiding the formation of siphons.
It’s use is mandatory when the base of the
generator group is under the water line
, and it
must be positioned at least 12" above sea level.
(see fig. 11).
Anti-siphon valve must be inserted between the inlet
of the sea water pump and exhaust manifold as
indicated in Fig. 11
The drainage duct of the anti-siphon valve must run
beneath the valve itself in order to prevent water
accumulating in the duct, which should always
INFORMATION
WARNING
10
