INSTALLATION
EN / W-SQ20 / December 2016
13
Roof mounted radiator
The radiator on the roof is often the best option from the
point of view of keeping the noise of the fans away from
people and it will give the best result in dissipating the
heat. However, often this option conflicts with the possible
need to keep the vehicle as low as possible.
Another disadvantage is that the piping has to go through
the roof which requires provisions to be waterproof. Also
negative is that a roof mounted radiator is more sensitive
for air traps (see figure 10). Where sufficient space is
available, it would be ideal to have the radiator vertically
mounted on the roof. Note that the expansion tank should
be above the radiator.
When having the radiator horizontally mounted on the roof
(refer to figure 19) enough space (50 mm) should be
between the roof and the radiator fan to have a free flow of
air. When the radiator is roof mounted there should be
protection against weather conditions. To avoid damage
while the vehicle is driving at high speed, the use of a
spoiler could be necessary.
Figure 19: Two examples of a top mount radiator
3
TWO SPEEDS FAN (OPTIONAL)
To keep the noise as low as possible the fan of the
radiator can run at two different speeds. As option a
control box is available which can be used to drive the fan
with two speeds, depending on the load of the generator.
In normal mode the electric motor of the fan is powered by
a low voltage and runs at low speed. This is achieved by
means of a transformer. In this mode the fan hardly
produces any noise. Only when necessary - this is
controlled by thermostat switches - the fan is switched to a
higher voltage and will blow at full speed (refer to the
connection diagrams in paragraph 4.5).
However, when not strictly necessary, we recommend
using the standard fan control instead of the two speeds
fan control, in order to keep the system as simple as
possible.
2.5.3
Dry exhaust system
1
GENERAL REMARKS
A dry exhaust muffler system should be very effective in
silencing the exhaust when applying the right mufflers.
However, noise could be generated by vibrations in the
mufflers and be transferred to the chassis. Tacit factors
like the length of specific pipe sections could cause the
noise to be amplified. It is very difficult to take these
factors into account.
Figure 20: Dry exhaust systems on vehicles
The standard WhisperPower exhaust kit contains the
materials to perform a professional installation. In the kit is
a stainless steel flexible bellow (hose) to allow for
expansion and to prevent vibrations to be transferred.
Rubbers are supplied to mount the mufflers flexible. The
insulation blanket for the flexible bellow and the resonance
muffler are also very effective in damping vibrations. Still it
could be that additional measures has to be taken like an
extra clamp in a vibrating section of pipe, insulation
blankets on other parts of the system and possibly even
additional mufflers.
When the exhaust is led through the roof of a
vehicle, measures has to be taken to prevent
rainwater to enter the system. Special rain
caps are available as an option.
Figure 21: Ways to prevent water from getting in
