grandimpianti C 200/51 Instructions Pour L'installation Et Mode D'emploi page 47

 Gas connection: for machines that use this means of heating: connect the apparatus
to the existing gas piping by means of a vapour lock, that makes it possible to isolate
the apparatus from the rest of the installation (for example, DTU 61.1 for France).
Currently applicable regulations and standards in the country in question must be observed.
The size of the gas supply piping will be designed to minimise losses of charge: its diameter
will be determined in accordance with its path (length, number of elbows etc.) and the power
of the apparatus.
Very important!
Check that the settings of the apparatus correspond to the nature and pressure of the
gas distributed in the installation.
To check the gas supply pressure, it is sufficient to connect a pressure gauge on the
pressure socket situated on the solenoid valve unit when the burner is on.
The gas pressure thus measured must be equal to that indicated on the identification plate
of the apparatus for the gas used (+ or – 10% maximum). A pressure reducer (not provided)
corresponding to the nature and output of the used gas (see technical data sheet) must be
installed on the piping close to the machine.
Steam connection: steam heated machines are connected at the rear of the

machine.
The steam input is to the right in a pipe of 20-27 (3/4").
The steam output is to the right in a pipe of 15-21 (1/2").
A small connection at the outlet is to be provided by means of a hose with interior diameter
of approximately 10 mm.
Vapor and fumes exhaust
Vapor (and the removal of burned gases for gas-heated machines) must be taken outside
by means of a pipe connection with a net diameter corresponding to the diameter of the
demister outlets, situated at the top of the machine. The evacuated air must be taken away
from the workplace and must never be linked to other flues already being used to extract
smoke from other fuels.
The siting of these conduits must be within the limits established in environmental thermal
legislation. The pipe used must resist temperatures up to 150°C, and must never come too
close to inflammable materials or those likely to be deformed due to excessive temperature.
The inside of the pipe must be smooth. It is important for there to be no elements that could
disturb the trajectory of the air or on which fluff or small items can accumulate (screws, rivets
etc.); inspection systems and periodical cleaning of the conduits must be arranged.
It is recommended for the output piping to be as short as possible. It should not exceed
4 metres, with more than 2 elbows at 90°, and should have a slope of 2% outwards in the
horizontal sections in order to prevent the flow of condensate towards the machine.
Please note: for plants with more than 8 linear metres of piping and/or more than one elbow,
it is recommended to increase the diameter of the pipe and/or fit a draught accelerator on
the plant (extra aspirator).
Finally, it is recommended for each machine to have its own demister outlet. If this is not
possible:
DOC MACHINE Ø50.0-EN by PS on 19/06/2015, Page 13 of 33