Checking Gas Pressure And Nominal Heat Input - NAYATI NGETL 5-50 Handbuch

• Checking Gas Pressure and Nominal Heat Input (Fig. 2)
At the first installation, specialized technician must control Gas Economic Table Low nominal
heat input, maintenance, and gas conversion. DO NOT improve Gas Economic Table Low
performance and increase nominal heat affirmed by the manufacturer. Control heat input by
using gas counter and chronometer. Measure the exact amount of gas flow per unit of time
which consumed by the appliance at maximum power. Compare the measurement to the
consumption data on Data Technical Table 3, ± 5% tolerance is allowed. When you are
measuring top deviations, carefully check the diameters and the quality of installed injectors
and gas main pressure. If you want to measure the main pressure while Gas Economic Table
Low is ON and using a pressure gauge for liquids (for example U manometer, with minimum
resolution 0.1 mbar), please follow direction below:
1. Connect the flexible pipe "E" of the Manometer "M" to the inlet pressure point "C" after
unscrewing its cap.
2. Measure the connection pressure: if the reading is not within the values given in the
following table, the appliance cannot work properly. The gas company must be informed to
find out the supply pressure problems. If necessary, install a pressure regulator.
3. Once the connection pressure has been measured, disconnect flexible pipe "E", retighten
the screw cap of the inlet pressure point "C". Restore the components inversely.
Table 3:
Gas Type
Natural gas G 20
Natural gas G 25
Liquid gas G 30/ G 31
Liquid gas G 30/ G 31
ORIENTAL
Manual Instructions for Gas Economic Table Low
Inlet pressure (mbar)
Normal Minimal
20 18
20 18
30 28
50 42.5
Maximal
25
25
37
57.5
16