A1
EQUIPMENT
B1
UV PHOTOCELL
DW
VALVE SEAL CONTROL PRESSURE SWITCH
F1
THERMAL RELAY
FU1
FUSES
H0
EXTERNAL SHUT-DOWN WARNING LIGHT
H1
OPERATION WARNING LIGHT
H10
OIL WARNING LIGHT
H11
GAS WARNING LIGHT
H17
VENTILATOR LAMP
H18
2ND STAGE LAMP
H19
MAIN VALVES ON LIGHT
H2
LOCK WARNING LIGHT
H23
TRANSFORMER LAMP
K1
MOTOR RELAY
K3-3.1
FUEL CHANGE RELAY
KA
AUXILIARY RELAY
KE
EXTERNAL CONTACTOR
MV
FAN MOTOR
PA
AIR PRESSURE SWITCH
Pm
MINIMUM PRESSURE SWITCH
S1
START/STOP SWITCH
S2
RELEASE BUTTON
S6
GAS-OIL SELECTOR
S7
TANK LOADING BUTTON
SG
MAIN SWITCH
T2
2nd STAGE THERMOSTAT
TA
IGNITION TRANSFORMER
TC
BOILER THERMOSTAT
TS
SAFETY THERMOSTAT
X1B/S
POWER SUPPLY CONNECTOR
X2B/S
2ND STAGE CONNECTOR
X18
SYNOPTIC CONNECTOR
Y1
1
STAGE ELECTROVALVE
st
Y2
2
STAGE ELECTROVALVE
nd
Y10
AIR SERVOMOTOR
YEF
ELECTROFRICTION
YGP
MAIN SOLENOID VALVE
YGS
SAFETY SOLENOID VALVE
Z1
FILTER
EN
34 / 34
0006081545_201305
DIN / IEC
GNYE
GREEN/YELLOW
BU
BLUE
BN
BROWN
BK*
BLACK
BK*
BLACK CONNECTOR WITH OVERPRINT
EN A1 CONTROL BOX B1
EN