Exhaust System; Separate Fuel Tank - Grundfos Fire NKF Montage- Und Betriebsanleitung

10.10 Exhaust system

This section applies to pump sets with diesel
Note
engine.
Warning
Exhaust gases must be directed safely to the
open air through the exhaust system.
Exhaust fumes must not escape indoors.
Operation without an exhaust system is not safe.
Warning
Make sure that persons cannot accidentally come
into contact with hot exhaust pipes.
Install exhaust pipes as straight and with as few bends as
possible. Install the supplied silencer horizontally after the first
90 °-bend seen from the engine outlet.
Arrange the exhaust system so that no condensation water can
enter the engine. Attach the exhaust system to the building.
Connect the exhaust pipe to the flexible exhaust port of the
engine. The exhaust port is covered for transportation by a plastic
plug which must be removed before connecting the exhaust pipe.
See arrow in fig. 25. The flexible connection on the engine must
not be used to compensate for misaligned pipework.
The minimum diameter of the exhaust pipes must not be smaller
than the exhaust port of the engine.
The diameter of the exhaust pipes depends on
the pipe length, the type and number of silencers
and the bends, as all will affect the flow
resistance. In order not to exceed the exhaust
Note
counterpressure specified by the manufacturer of
the diesel engine, it may be necessary to use
pipes with a nominal diameter one or two sizes
larger than the engine outlet.
Fig. 25 Exhaust port of the engine
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10.11 Separate fuel tank

The fuel tank can also be arranged separately in some designs.
In these cases, the fuel tank must be installed in a dry and well-
ventilated room and as close as possible to the pump set.
The outlet of the fuel tank should be on level with or above the
centre-line of the fuel pump to ensure gravity-supported feeding
of fuel. The fuel tank must be fastened to the floor through the
mounting holes.
If there is no connecting block, connect the fuel pipes as shown in
fig. 26 to the flow pipe (pos. A, from the manual fuel supply pump)
and the return pipe (pos. B, from the injection pump).
If there is a connecting block, connect both connecting pieces
(fig. 27, pos. A) to the connecting block. The connecting block is
marked "SUPPLY" for the incoming pipe and "RETURN" for the
return pipe.
This section applies to pump sets with diesel
Note
engine.
Observe the standards when sizing and installing
Note
a separate fuel tank.
Fig. 26 Connecting the fuel pipes without connecting block
Fig. 27 Connecting the fuel pipes to the connecting block
A
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