baltur TBG 120 P Installation, Use And Maintenance Instruction Manual page 69

A1 EQUIPMENT
A3 VALVE SEAL CONTROL
B1 PHOTORESISTOR / IONISATION ELECTRODE / UV
PHOTOCELL
F1 THERMAL RELAY
FU1÷4 FUSES
H0 EXTERNAL LOCK INDICATOR LIGHT/ AUXILIARY
HEATING ELEMENT OPERATION LAMP
H1 OPERATION INDICATOR LIGHT
H17 FAN OPERATION INDICATOR LIGHT
H19 MAIN VALVE OPERATION INDICATOR LIGHT
H2 "LOCK-OUT INDICATOR LIGHT"
H23 TRANSFORMER OPERATION INDICATOR LIGHT
K1 FAN MOTOR CONTACTOR
KE EXTERNAL CONTACTOR
MV FAN MOTOR
P M "MAXIMUM PRESSURE SWITCH"
P1 "HOUR METER"
PA AIR PRESSURE SWITCH
Pm "MINIMUM PRESSURE SWITCH"
S1 START/STOP SWITCH
S2 RELEASE BUTTON
S8 1st/2nd STAGE SWITCH
SG MAIN SWITCH
T2 "2ND STAGE THERMOSTAT"
TA IGNITION TRANSFORMER
TC BOILER THERMOSTAT
TS SAFETY THERMOSTAT
X1 BURNER TERMINAL BOARD
X1B/S POWER SUPPLY CONNECTOR
X2B/S 2nd STAGE CONNECTOR
X3 Pm CONNECTOR
X4 YP CONNECTOR
X8B/S VPS 504 CONNECTOR
X9 TRANSFORMER CONNECTOR
X18 SYNOPTIC CONNECTOR
Y10 AIR SERVOMOTOR
Y1/Y2 1st / 2nd STAGE SOLENOID VALVES
Z1 FILTER
GNYE GREEN / YELLOW
BU BLUE
BN BROWN
BK BLACK
BK* BLACK CONNECTOR WITH OVERPRINT
Ground
L1 - L2- L3 Phases
N - Neutral
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