INSTALLATION
EN / M-GV4 Piccolo for marine applications / May 2017
5
2.5
VENTILATION
2.5.1
General
The Genverter normally draws air from the engine
compartment or machine room. An engine compartment with
natural ventilation must have vent openings of adequate size
and location to enable the Genverter to operate without
overheating. To allow an ample supply of air within the
temperature limits of the generating set an opening of at least
100 cm2 is required.
A "sealed" engine compartment must have a good extraction
ventilator to maintain reasonable ambient temperatures. High
temperature of intake air reduces engine performance and
increases engine coolant temperatures. Air temperatures above
40°C reduce the engine power by 2% for each 5°C of rise.
Further the electronic inverter is rated for 40°C. At higher
temperatures the electric output will be lower. To minimise
these effects the engine room temperature must not be more
than 15ºC above the outside ambient air temperature.
Apply a combination of ventilators, blowers and air intake
ducting to meet the temperature limit. The air inlet ducts
should run to the bottom of the engine compartment to clear
fumes from the bilge and to circulate fresh air. Air outlets
should be at the top of the engine compartment to remove the
hottest air. An engine compartment blower should be used as
an extraction ventilator to remove air from the engine room.
In cases where it is impossible to meet the above mentioned
temperature limit by using engine compartment ventilation,
connections are to be made for an air inlet directly to the
Genverter enclosure.
Air inlets should be louvered, where appropriate, to protect the
engine room and to protect the generating set from water
spray.
2.6
CONNECTIONS
2.6.1
Overview
The Genverter GV4 Piccolo comes supplied with all supply and
output lines (i.e. cooling water connections, exhaust, fuel lines
etc.) already connected to the engine and inverter. The supply
lines are fed through the capsule’s front base.
The connections are marked as shown in Figure 2 (next page).
All electrical connections, cable types and sizes must comply
with the appropriate national regulations. Supplied cables are
rated for ambient temperatures up to 70°C.
If the cables are required to meet higher temperature
requirements, they must be run through conduits.
ATTENTION!
Before working (installation) on the system read
the section safety instructions.
2.7
FUEL SUPPLY
2.7.1
Fuel tank
Fuel tanks should be made of appropriate material such as
(stainless) steel or plastic. Steel tanks should not be galvanised
or painted inside. Condensation can occur in metal tanks when
temperature changes. Therefore, water accumulates at the
bottom of the tank and provisions should be made for the
drainage of this water.
The tank will need a filling connection, a return connection and
an air ventilation connection which will require protection
against water entry.
Some official regulations do not allow connection points at the
base of the fuel tank; connections are to be made at the top of
the tank with internal tubing down to a few cm above the
bottom of the tank. Using the existing fuel tank of the car-
engine the fitting should be carried out with extra care. Both a
supply line and a return line should be installed and go into the
tank from the top. Interference of the two systems (car engine
and Genverter engine) should be avoided.
2.7.2
Fuel lift pump
Apart from the machine fuel pump, the generating set is
supplied with a separate fuel lift pump; therefore the tank can
be installed at a lower level than the generating set (see
Figure 3). The maximum suction height is 1 m.
If the pump has to lift the fuel higher than one meter an
external fuel lift pump must be installed (Art. No. 50201062).
When using a second electric fuel supply pump, it is
recommended to mount a loose supplied pump close to the
tank and mount it in an angle or vertical to prevent air bubbles
to block the system. The pump makes clicking noises and
therefore could be mounted on rubber mountings. When the
clicking noises of the pump are not acceptable another
noiseless pump is available as an option (Art. No. 50202200).
