INSTALLATION
18
December 2016 / W-SQ6/8/12/16 for mobile applications / EN
Roof mounted radiators
The radiators 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 roof mounted radiators are more sensitive
for air traps (see figure 16). When having enough space it
would be ideal to have the radiators vertically mounted on
the roof. Note that the expansion tank should be above the
radiator.
When having the radiators horizontally mounted on the
roof (refer to figure 26) enough space (50 mm) should be
between the roof and the radiator fan to have a free flow of
air. When the radiators are 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 26: Two examples of top mount radiators
3
TWO SPEEDS FAN (OPTIONAL)
To keep the noise as low as possible the fans of the
radiators can run at two different speeds. As option a
control box is available which can be used to drive the
fans with two speeds, depending on the load of the
generator. When using 12/24V DC to drive the fans (see
chapter 4.9), in normal mode the electric motors of the
fans are connected in series and run at low speed. In this
mode they almost produce no noise. Only when necessary
- this is controlled by thermostat switches - the fans are
switched in parallel and will blow at full speed.
The same is achieved with 230 V fans with help of a
transformer (refer to the connection diagrams in paragraph
4.8).
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 27: 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 28. Ways to prevent water from getting in
