Riello RLS 68/E MX Installation, Use And Maintenance Instructions page 79

Wiring layout key
+BB Burner components
+BC Boiler components
A1 Control box for the air/fuel ratio
A2 Operator panel
B Filter to protect against radio disturbance
B1 Output regulator RWF50
B2 Fuel meter
BA Input in current DC 4...20 mA
BA1 Input in current DC 4...20 mA to modify remote set-
point
BP Pressure probe
BP1 Pressure probe
BR Remote setpoint potentiometer
BT1 Thermocouple probe
BT2 Probe Pt100, 2 wires
BT3 Probe Pt100, 3 wires
BT4 Probe Pt100, 3 wires
BTEXT External probe for climatic compensation of the set-
point
BV Input in voltage DC 0...10V
BV1 Input in voltage DC 0...10V to modify remote setpoint
F1 Fan motor thermal relay
F2 Pump motor thermal relay
FU1 Three-phase power supply fuses
H Remote lockout signal
h1 Operation hour counter
IN Burner manual stop switch
K1 Relay "K1" (clean contacts "FLAME ALIGHT")
K2 Relay "K2" (clean contacts "BURNER LOCK-OUT")
K3 Relay "K3" (clean contacts "OVERLOAD" fan motor)
KG Gas operation "KG" relay
KMP Pump motor contact maker
KMV Fan motor contact maker
KO Light oil operation "KO" relay
MP Pump motor
MV Fan motor
OCI Communication interface for Modbus system
PA Air pressure switch
PE Burner earth
PGM Maximum gas pressure switch
PGMin Minimum gas pressure switch
PGVP Gas pressure switch for valve leak detection control
device
POilMin Minimum oil pressure switch
POilMax Maximum oil pressure switch
Q1 Three-phase line disconnecting switch
Q2 Single-phase line disconnecting switch
QRA Flame sensor
RS Remote burner reset button
S1 On/off selector
S5 Fuel selector
SM1 Air servomotor
SM2 Gas servomotor
Appendix - Electrical panel layout
TA
TL
TR
TS
VFOil
VROil
VR1Oil
VSOil
X1
X4
X6
X7
XP1
XP4
XP6
XP7
XPD
XPGM
XPGMin
XPGVP
XPOilMax Maximum oil pressure switch connector
XPOilMin
Y
77 GB
Ignition transformer
Limit thermostat/pressure switch
Adjustment thermostat/pressure switch
Safety thermostat/pressure switch
Light oil working valve
Light oil adjustment valve
Light oil adjustment valve
Oil safety valve
Burner terminal strip
4-pin plug
6-pin plug
7-pin plug
Connector for output power regulator kit RWF50
4-pole socket
6-pole socket
7-pole socket
Operator panel connector
Maximum gas pressure switch connector
Minimum gas pressure switch connector
Gas pressure switch connector for gas leak control
Minimum oil pressure switch connector
Gas regulator valve + gas safety valve
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