Riello 20072969 Installation, Use And Maintenance Instructions page 22

The selection of the hole to be used is determined based on the
maximum output requested, as illustrated in Tab. J.
In the factory, the adjustment is adjusted for the maximum stroke
(hole 10, Fig. 15).
The gas pipes leave the factory calibrated at
notch 1.
The adjustment shown in Fig. 16 allows the gas
WARNING
pipes to be positioned in the best way for the ap-
plication on which the burner is installed (e.g. boil-
ers with flame inversion chamber).
20087244
Installation
Leverage hole
5
5
6
8
5
6
8
10
20077710
20 GB
Output (kW)
From A
1100 4000
4000 6600
6600 8100
8100 10100
1500 5500
5500 7500
7500 9650
9650 11100
Tab. J
Fig. 16