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Wiring layout key
+BB
Burner components
+BC
Boiler components
A4.1
Control box
A9.1
Control box display
B3.1
Suppressor
B3.2
230/24V feeder
BA
Probe with output under current DC 4....20 mA
BA1
Device with output under current DC 4....20 mA to
modify remote setpoint
BA2
Load indicator
BA3
Probe for external modulation DC 4...20 mA
BP
Pressure probe
BP1
Pressure probe
BT3
Probe Pt100, 3 wires
BT4
Probe Pt100, 3 wires
BT5
Probe PT/LG-Ni1000
BV
Output probe in voltage DC 0...10V
BV1
Output probe in voltage DC 0...10V to modify remote
setpoint
BV2
Probe for external modulation 2...10V
F3.1
Auxiliary fuse
FU1
Fuse T4.2 primary circuit
FU2
Fuse T4.2 secondary circuit
FU3
Fuse T4.2 secondary circuit
H3.1
Power on signal button
H3.2
Lance oil position ready signal light
H6.1
Fan motor on light signal
H7.1
Burner on gas light signal
H7.2
Pump motor on light signal
H7.3
Burner on oil light signal
IN
Burner manual - Stop switch
K3.1
Lance position ready relay
K6.1
Burner lock relay
K6.2
Fan motor control relay
K6.3
Output relay for closing ext. FGR valve
K7.1
Pump motor control relay
PA
Air pressure switch
PE
Burner earth
PGM
Maximum gas pressure switch
PGMin
Minimum gas pressure switch
PGVP
Leak detection control pressure switch
POM
Maximum oil pressure switch
POm
Minimum oil pressure switch
PX
Oil lance proximity switch
QRI
Flame sensor
RS
Remote burner reset button
S3.1
Stop button
S6.1
Fuel selector
SH6.1
Burner reset button and lock-out signal
SM1
Air servomotor
SM2
Fuel servomotor
SM3
FGR servomotor (external)
Appendix - Electrical panel layout
T4.1
T4.2
TA
TL
TS
VP1
VP2
VR1
VR2
VS1
VS2
VU
X1
X2
X3
X4
X5
XV
XAZL
XP...
XQRI
XSM1
XSM2
XV...
49
GB
Control box transformer
Servomotor transformer
Ignition transformer
Limit thermostat/pressure switch
Safety thermostat/pressure switch
Pilot valve 1
Pilot valve 2
Safety valve on oil return
Safety valve on oil return
Safety valve on oil delivery
Safety valve on oil delivery
Nozzle valve
Burner terminal board
Clear contacts terminal board
Regulation probe terminal board
VSD terminal board
FGR terminal board
Derivation unit terminal board
AZL display connector
Pressure switch connectors
Flame sensor connector
Servomotors connector
Servomotors connector
Valve connectors
20169350
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