INSTALLATION
14
September 2006 / WHISPER 9.5/12.5/15/20 ULTRA / US
Only after the exhaust/water separator the exhaust hose
may have a length of over 25 ft (7.5 m) if the exhaust hose
diameter is also increased from 2” (51 mm) to 2½” (63
mm) in order to reduce the back pressure (ref. to fig. 17)
However watertraps should be avoided as the fumes still
contains water and this should not accumulate in bents
(refer to fig 16). An additional outlet exhaust muffler close
to the hull outlet will help further to reduce noise emission
If the generating set and the exhaust system have been
installed correctly, neighbouring boats will not be disturbed
by generating set noise. With the "super silent" exhaust
system, generating set noises are almost inaudible. For
optimal noise reduction, the sea water outlet from the
exhaust/water separator (centre outlet on the unit) should
be installed below the water level to eliminate noisy
splashing of the effluent sea water.
The through-hull outlet for the exhaust fumes should not
direct the fumes directly toward the water surface as this
will cause excessive noise (ref. to fig. 18).
Do not direct the outlet directly toward the
water surface.
Fig. 18. Outlet direction
Fig.17.
HOSE ROUTE A-B
Up to 10ft (3m) Ø 2” (51 mm)
10-30ft (3 - 10 m) Ø 2.5” (63 mm)
Ø 1 5/8” (40mm)
Ø 2” (51mm)
Ø 2” (51mm)
Ø 2” (51mm)
A
B
MAX. 10ft (3m)