IT
A1
EQUIPMENT
A3
VALVE SEAL CONTROL
B1
IONISATION ELECTRODE
H0
EXTERNAL SHUT-DOWN WARNING LIGHT
H1
OPERATION WARNING LIGHT
H18
2
STAGE LAMP
ND
MV
MOTOR
PA
AIR PRESSURE SWITCH
P1
HOUR METER
PG
GAS PRESSURE SWITCH
T2
2
STAGE THERMOSTAT
ND
TA
IGNITION TRANSFORMER
TC
BOILER THERMOSTAT
TS
SAFETY THERMOSTAT
Y1/Y2
1
/ 2
STAGE SOLENOID VALVES
ST
ND
Y10
AIR SERVOMOTOR
*
OPTIONAL
**
ONLY FOR LGB 21
MINIMUM IONISATION CURRENT 3 µA
L1 PHASE
GROUND
N
NEUTRAL
20 / 20
0006080763_201306