Riello RS 160/E O2 BLU Installation, Use And Maintenance Instructions page 30

Example with natural gas G 20:
Required burner maximum output operation: 1600 kW
Gas pressure at output of 1600 kW
Pressure in combustion chamber
13 + 3.0
pressure required at test point 1)(Fig. 27).
20164541
Installation
= 13.0 mbar
= 3.0 mbar
= 16.0 mbar
WARNING
28 GB
S8716
The heat output and gas pressure data in the
head refer to operation with gas butterfly valve
fully open (90°).
Fig. 27