Riello RS 300/EV BLU Installation, Use And Maintenance Instructions page 44

Wiring layout key
A Display and calibration unit
A2 Electronic cam
A3 Flame sensor
A6 O module
2
B Filter
BP Pressure probe
BV Pressure probe
F3 Auxiliary fuse
G1 Pt100 3 wire probe
G2 3 wire probe
GF Inverter
G3 Rpm sensor (with Inverter kit only)
G4 O sensor
2
H1 Light signalling of mains live state
H2 Fan motor lock-out warning lamp
H3 Lock-out warning lamp
K1 Clean contacts output relay burner switched on
K2 Clean contacts output relay motor lockout
K3 Clean contacts output relay for burner lockout
K4 Motor control relay
K5 Clean contacts output relay for fan ON
MV Fan motor
PA Air pressure switch
PE Burner earth
PGMax Maximum gas pressure switch
PGMin Minimum gas pressure switch
PGVP Gas pressure switch for valve leak detection control
device
S1 Emergency stop button
S2 Service selector
S4 Automatic / off selector
SM1 Air servomotor
SM2 Gas servomotor
R Input in current DC 4...20 mA
TA Ignition transformer
TL Limit thermostat/pressure switch
TR Adjustment thermostat
TS Safety pressure switch/thermostat
Y Gas regulator valve + gas safety valve
X1 Main supply terminal strip
X70 RPM sensor terminal board
XAUX Auxiliary terminal strip
XPGM Maximum gas pressure switch connector
XS Flame sensors connector
VS Safety valve
VR Adjustment valve
XSMG Gas servomotor connector
XSMA Air servomotor connector
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Appendix - Electrical panel layout
42 GB