A1
CONTROL BOX
A3
VALVE SEAL CONTROL
B1
Flame sensor
F1
THERMAL RELAY
FU1÷4 FUSES
H0
EXTERNAL LOCK INDICATOR LIGHT/ AUXILIARY HEATING
ELEMENT OPERATION LAMP
H1
OPERATION INDICATOR LIGHT
H2
LOCK-OUT WARNING LIGHT
H17
FAN OPERATION INDICATOR LIGHT
H19
MAIN VALVE OPERATION INDICATOR LIGHT
H23
TRANSFORMER OPERATION INDICATOR LIGHT
K1
FAN MOTOR CONTACTOR
KE
EXTERNAL CONTACTOR
K7
INVERTER START RELAY
MV
FAN MOTOR
N1
”ELECTRONIC REGULATOR
P M
“MAXIMUM PRESSURE SWITCH“
P1
“HOUR METER“
PA
AIR PRESSURE SWITCH
Pm
MINIMUM PRESSURE SWITCH
S1
START/STOP SWITCH
S2
RELEASE BUTTON
S4
AUT-MAN SELECTOR
S5
MIN-O-MAX 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
YP
MAIN SOLENOID VALVE
YS
SAFETY SOLENOID VALVE
Z1 FILTRO
GNYE GREEN / YELLOW
BU BLUE
BN BROWN
BK
BLACK
BK*
BLACK CONNECTOR WITH OVERPRINT
ENGLISH
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0006160254_202001
Summary of Contents for 17840010
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Page 36: ...ITALIANO 34 34 0006160254_202001 ...
Page 68: ...WIRING DIAGRAMS ENGLISH 32 34 0006160254_202001 ...
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