KEY TO LAYOUT
MB
Wiring terminal block
MV
Fan motor
F1
Protection against radio interference
PO
Oil pressure switch
TA
Ignition transformer
SM
Servomotor
FR
Photocell
VF
Solenoid valve on supply line
CN
Connector
VS
Safety solenoid valve
VR
Solenoid valve on return line
VR1
Solenoid valve on return line
TB
Burner ground (earth) connection
5483
ELECTRICAL WIRING CONNECTIONS
(carried out by the factory)
GB
4
D2703