Skeleton Diagrams - Bentone BG 550 Installation And Maintenance Instruction

4.5 Skeleton diagrams

1. Ball valve
2. Filter
3. Governor
4. Pressure gauge with shut-off cock
5a. Gas pressure switch, mini
5b. Gas pressure switch, maxi
6a. Main valve, 2 -stage. When modulaing operation is required this
valve is equipped with controls for variable opening.
6b. Safety valve
1)7. Valve proving system
9. Air pressure switch
10. Gas burner control
Pos. 5b, 7: Components not required according to EN 676.
1) Required over 1200 kW according to EN 676.hhh
14 Bentone
172 515 05 2018-01-02