Metos 4241001, Operating Instructions Manual, Page: 80 / 90

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11.1 • All appliances, during final testing in the
factory, are fitted for the type of gas shown on
the sticker next to the data plate. Should the
appliance fitting not correspond to the family
of gases available on location, the appliance
must be converted to adapt to the type of gas
available. If conversion is necessary, then you
must inform Lainox Customer Service and
refer to the technical manual.
11.2 • Commissioning of the appliance to operate at
the rated heat output is dependent on the inlet
pressure and calorific value of the gas and the
correct amount of primary air.
11.3 • The inlet pressure required for the appliance
to operate with the various types of gas
typically available will be within the limits
indicated in table 6 of the “Tecnical gas data”
booklet.
The appliance must not be commissioned
if inlet pressure values are outside these
limits. If pressures differ from those indicated
in Table 6, the gas supply company or agency
should be contacted, or alternatively the
contractor by which the system was installed
in the building.
11.4 • The lower calorific value of the gas can be
checked with the supply company or agency,
and should comply with the information given
in table 5 of the “Tecnical gas data” booklet.
11.5 • MEASURING THE INLET PRESSURE
The inlet pressure is measured using a
manometer connected to the pressure tap (3)
of the gas adjustment valve. To gain access
to the valve, the right-hand side casing panel
has to be removed.
Before connecting the manometer it is
necessary to loosen the screw sealing the
pressure tap (3). You then measure the
pressure with the burner in operation. The
value shown on the manometer must come
within the limits given in table 6 “of the
“Tecnical gas data” booklet.
After checking, carefully close the screw (3).
The sealed screws you can see on the valves
must never be tampered with under any
circumstances.
T a m p e r i n g i m m e d i a t e l y i n v a l i d a t e s
warranty!
11 • OPERATING AT THE RATED HEAT OUTPUT
900-----rev00
Warning!
The gas system components are fitted for a maximum pressure of
65 mbar. Higher working pressures are not permissible.