Lowara GEMK Serie Instrucciones Para La Instalación Y El Uso página 84

- higher grade of smoke.
- high fuel consumption.
- overheating of the cooling water and lubricant deterioration, with the consequent negative
repercussions on the engine parts.
The diameter of the fume exhaust pipe section should be at least the same as that of the outlet of the
ATTENTION
silencer provided, and never of a diameter less than that of the engine's exhaust manifold. It is possible
that the diameter of the silencer is less than that of the manifold: in which case, use conical adapting
pipes to maintain the diameter of the engine's manifold.
The exhaust piping must be made of steel and be sufficiently strong and airtight; it is to be connected to the manifold of the
engine using a flexible coupling to absorb the vibrations generated by the engine and the thermal dilations caused by the
extreme heat of the burned gases.
In the case of pipes for burned gases, it is good practice to use pipes that are thinner than the standardized ones due to the
moderate amount of pressure. It is also advisable to insert other intermediate dilation joints every 6 to 8 m in the case of long
exhaust pipes. There should also be clearance in the outlet holes in the walls and supports to permit thermal dilation. Pipes on
the premises must be insulated to avoid heating the area any further and to minimize the risk of scalding; the insulation material
must be fire-resistant. It is not permitted to join together the gas exhaust pipes of several engines to form a single pipe. Each
engine must have its own, separate gas exhaust pipe. The installer must check that the installation is correct and that the
exhaust counterpressure values are within the tolerance ranges indicated by the manufacturer.
3.9.1 Outlet
The burned gases must be discharged out of the building, either directly or via a flue. The outlet should preferably be located
above the radiator air vent, so that the current of warm air from the radiator encourages the burned gases to disperse upwards.
The outlet must be situated a minimum of 3 m above the floor and at a suitable distance from windows, walls, openings or air
inlet vents, in relation to the nominal power of the installation.
84
Fig 6