MAIN COMPONENTS
LEGEND
Fumes pressure switch
Fan
Heating sensor
Total safety thermostat
5
Exchanger
6
Burner
7
Ignition electrodes
8
Control electrode
9
Automatic air bleed valve
0 Safety valve
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XILO D 0 N MCS W TOP
Fume analysis points
No-water pressure switch
Circulator
Filling cock
Gas valve
5 Modulating coil
6 Hot water exchanger
7 Pressure-operated switching valve
8 Hot water sensor
9 Gas pressure reading point
0 Expansion tank
Thermohydrometer
Malfunction warning light
ON/OFF warning light
Lock-out warning light
5 Hot water adjustment potentiometer
6 Function selector
7 Heating adjustment potentiometer
8 Taken combustion test
9