Biasi M96.24SM/B Service Manual page 10

Diagrams
Diagrams for boiler equiped with full sequence ignition device type: Honeywell FPLD
Electrical voltages with burner on
230~
230~
230~
Modulating
Gas valve
0
Safety
thermostat
Fan
230~
Air
pressure
switch
0
Electronic
control p.c.b.
230~
8
230~
0
during c.h. or d.h.w. operation
only during c.h. operation
only during d.h.w. operation
230~ 0
0 230~
Pump
230~
Full sequence
Ignition device
230~
0
Electronic
control p.c.b.