Riello Burners RL 190/M Installation, Use And Maintenance Instructions page 22

LAYOUT (A) - (B) page 20 - 21
Burners RL 190/M
The flame safeguard is in an auxiliary panel.
See the internal electrical systems of the auxiliary panel in order to have the complete wiring diagram.
Key to Layouts (A) - (B)
B2 - Photocell
BB - On the burner
F1 - Fan motor thermal overload
K1 - Fan motor contactor
M1 - Fan motor
SM - Servomotor
S10 - Air pressure switch
S14 - High oil pressure switch
TB - Burner ground (earth) connection
T1 - Ignition transformer
XMB - Burner terminal strip
XMQ - Auxiliary panel terminal strip
XQ1 - 3-pin plug-socket
XQ2 - 12-pin plug-socket
XQ3 - 12-pin plug-socket
XQ4 - 12-pin plug-socket
Y20 - Safety oil valve
Y21 - Oil valve on delivery
Y24 - Oil valve on return-Oil valve on return
22