INSTALLATION
US / M-SQ7 / October 2010
11
1.5.3
Exhaust system
Water is injected in the exhaust system of the generating
set. In this way the cooling water that has passed the heat
exchanger is mixed with the exhaust gases. Temperature
and volume of the gases are thereby reduced
considerably, so that a rubber exhaust hose can be used
and the level of noise is reduced as well.
1
STANDARD EXHAUST SYSTEM INSTALLATION
The generating set exhaust system must remain
completely independent and separate from the exhaust
system of any other engine on board. A water lock
prevents the generating set from being flooded by cooling
water and should be installed as close to the generating
set as possible. The lock must be large enough to hold the
entire water volume held in the hose from the top of the
goose neck to the water lock. The water lock must be
installed at the lowest point of the exhaust system (ref. to
fig. 12, ref. 1). The exhaust hose must have an inner
diameter of 1
5
/
8
’ (40mm), no less, no more. The exhaust
system must be installed so that the back pressure inside
the exhaust does not exceed 0.07 bar (1psi – 70 cm
watercolumn) and total length from the genearot to the top
of the goose neck or or water/separator does not exceed
3m (10 ft.). (Refer to paragraph 5.4.3 of the users manual).
The exhaust hose descends from the capsule to the water
lock. Then the hose rises via the "goose neck" to the
through-hull exhaust outlet, situated minimum 50 mm
above the water line (ref. to fig. 12, ref. 5.) The "goose
neck" must be vertical and situated preferable along the
ship’s keel center line. If the generating set is mounted
less than 24" (60 cm) above the waterline, a "goose neck"
must be installed to prevent the engine from overflowing. It
is recommended to install an extra muffler close to the
through-hull fitting.
3
3
4
2
5
6
A
M
in
im
a
l 24"
6
0
cm
M
a
xi
m
a
l
6
0
" 150c
m
2"
5c
m
B
HOSE ROUTE A- B MAX. 10ft (3m)
Fig. 12: Standard exhaust system
1 Exhaust water lock;
2 Exhaust outlet muffler;
3 Exhaust line Ø 1
5
/
8
” (40 mm);
4 Goose neck
5 Through-hull exhaust outlet Ø 1
5
/
8
” (40 mm);
6 Water level.
1
