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4. Installation
The installation has to be done by professionals. Poor installation can
damage the device (ex. bearing failure because of inadequate paralle-
lism). The professionals present are responsible for the observance of
appropriate regulations and standards.
All operations on the device including maintenance and start-up must
be done on a resting engine.
4.1. Preparation
• All devices are packed in a different way, depending on sales
channel and method of transportation. Remove all packaging
carefully, to avoid damaging the device.
Before installation, make sure that any protective coats, covers for
transport (ex. shaft cover) or other protective means were removed.
4.2. State of installation site
• The installation site must be well ventilated with dry, clean,
conditioned or ambient air, because the motor radiates heat
that would raise the room temperature so high, it would have
negative effects on the motor capacity.
• The installation site should be chosen so that normal mainte-
nance is easily possible.
• The ground underneath the must be able to take the weight of
the device. It should also be even and nonslip.
• The installation site must be designed so that accidental tou-
ching with the engine case, rotating or otherwise dangerous
parts is impossible.
• The installation site must be protected from any natural forces
(such as rain, snow, hail, storms, flooding, direct sun radiation,
frost or heat) as well as air pollutants (such as abrasive dust,
electric smog, fluff, smoke, oil, mist, exhaust gases or other
pollutants).
• Consider the noise limits at the installation site.
4.2.1. In- and outtake Ventilation
Normally, the engine can draw enough air from its surroundings.
However, the motor radiates heat that in closed spaces would raise
the room temperature so high it would have negative effects on the
motor capacity.
The ventilation plan must consider following aspects:
• diverting heat produced by the engine
• necessary air rate:
for the engine to consume properly
to cool any other devices
If the surrounding air is not suited due to dust, pollution or heat, an
additional air vent must be installed.
If the engine is to be built into an enclosed space, the air vents must
be large enough to make free air circulation possible. A guide value for
non-forced air ventilation is 0.4m².
When installing for continuous operation or in places where the instal-
lation site is very hot, it is recommended to install an exhaust fan with
appropriate volume.
To reach the highest capacity possible, the surrounding air must not
rise above +25°C. In case of higher temperatures it is necessary to
derate the power of the engine capacity.
Make sure that hot exhaust gas is not sucked in again by the engine
4.3. Motor mounting
The motor assembly must be done through four montage holes in the
base plate. A mechanical assembly using the motor flange is not al-
lowed.
Please also consider following points:
• The installation frame or foundation must be adequately di-
mensioned and torsion-resistant. It has to be robust enough to
absorb vibrations and to maintain alignment.
• The foundation must be chosen so that all mounting feet are
laid out evenly on the ground to avoid tension (possibly use
underpinning).
• Make sure the dimensions of the attachment screws are appro-
priate.
In order to achieve a large enough surface area, use a large washer
between the base plate and the mounting nut.
The engine plus any add-on device should be well balanced and
attached onto a hard metal structure with vibration damper in bet-
ween. This reduces vibration.
4.4. Exhaust gas system
4.4.1. Mounting the muffler
The muffler contained in the order is made to be used in industrial are-
as. If the engine is to be used uptown it might be necessary to replace
it with a better one.
4.4.2. Information about other exhaust gas systems
When installing a different exhaust gas system please consider fol-
lowing points:
The exhaust back pressure has a significant effect on the engines pow-
er. Too high exhaust back pressure causes lower power, hotter exhaust
gas and a hotter motor, and high consumption of fuel. The exhaust
back pressure can be held to a minimum when the exhaust system is
well dimensioned.
• Make sure that during the installation of the exhaust pipes the
radiated heat cannot be sucked in by the motor. The pipes
should be insulated. If the exhaust pipe go through walls, insu-
lation is mandatory.
• The exhaust pipe should be kept as short as possible and have
no bends. If this is not possible the radius of the curvature
should be held as wide as possible.
• When using exhaust pipes up to 10 meters in length the radius
of the pipes has to be about 30% higher than the diameter of
the exhaust manifold or the muffler exhaust pipe. The diameter
must not be smaller than that.
• If the exhaust pipe has a significantly larger radius than the
device connection, a cone-shaped connector with an angle
less than 30° should be installed additionally in order to avoid
exhaust back pressure.
• The installed exhaust pipe has to be complete and 100% leak-
proof in order to avoid heat, poisonous gases and power lost.
• It is recommended to install a screw at the lowest point of the
exhaust pipe to drain the condensate.
• Between the outtake manifold of the motor/muffler and the
exhaust pipe a flexible pipe should be installed in order to avo-
id vibration transmit and to enable thermal expansion of the
pipes.
• Make sure that muffler and any exhaust pipes are free from
flammable material (fire hazard).
4.5. Fuel System
The fuel system of the motor must provide a clean and continuous
fuel supply. Pay attention to the following points during the installa-
tion of an additional fuel tank:
• Only use gasoline durable tubes with wire netting.
• Tank ventilation is necessary in order to avoid too high or too
low pressure in the tank.
• Avoid too high pressure in the integrated tank. This can happen
when the tank ventilation is clogged up or the overrun is con-
nected to another external tank.
• Fuel tubes to and from the tank must have at least the same
diameter as their counterparts on the motor. When the pipes
are very long or the surrounding air cool, the diameter of the
pipes has to be wider to let through enough fuel.
