Clean the coil by an iron brush (ref. 12).
Suck the residuums from the boiler (ref. 13).
Replace every parts doing the operations in the inverse
way.
Please note. The general checking and combustion
regulation must be periodically executed by
specialized personnel as prescribed by the law.
ELECTRIC DIAGRAM
THERMAL
BURNER
20
N L1
M
1
MOTOR
Ref. 13
ELECTROVALVE
P
T
FLOW-SWITCH
THERMOSTAT
STARTING
TRANSFORMER
Ref. 12