A1 CONTROL BOX
B1 Flame sensor
FU1÷4 FUSES
K1 FAN MOTOR CONTACTOR
H0 EXTERNAL LOCK INDICATOR LIGHT/ AUXILIARY HEATING
ELEMENT OPERATION LAMP
H1 OPERATION INDICATOR LIGHT
H2 LOCK-OUT WARNING LIGHT
H16 FLAME PRESENCE WARNING LIGHT
MV FAN MOTOR
N1 ”ELECTRONIC REGULATOR
Pm MINIMUM PRESSURE SWITCH
PM MAXIMUM PRESSURE SWITCH
S1 START/STOP SWITCH
S2 RELEASE BUTTON
S5 MIN-O-MAX SWITCH
T2 2ND STAGE THERMOSTAT
TA IGNITION TRANSFORMER
TC BOILER THERMOSTAT
X1B/S POWER SUPPLY CONNECTOR
X2B/S 2nd STAGE CONNECTOR
X3 Pm CONNECTOR
X4 YP CONNECTOR
X9 TRANSFORMER CONNECTOR
YP MAIN SOLENOID VALVE
YS SAFETY SOLENOID VALVE
Wire series colour
GNYE GREEN / YELLOW
BU BLUE
GY GREY
BN BROWN
BK BLACK
BK* BLACK CONNECTOR WITH OVERPRINT
A B
A Two-stage operation
B Modulating operation
L1 - L2- L3 Phases
N - Neutral
Ground
** For calibration only
Minimum ionisation current 1 μA
ENGLISH
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0006160310_202001
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