PART II: OPERATION
28
ELECTRICAL DIAGRAMS
Electrical diagrams code 18-009 Rev.1 and 18-020 - complete key
BV
Fan motor remote contactor coil
CTV
Contacts of fan motor overload tripped
CN1
Connector for three-phase versions
CV
Fan motor contactor contacts
ER
Flame detection electrode
EV
Valves connector
EV1
Network side solenoid gas valve (or valves group)
EV2
Burner side solenoid gas valve (or valves group)
F-FU
Fuses (FU =6,3A three-phase versions - FU =10A monophase version)
FILTRO
Filter (when necessary)
FQ
Electrical board frontal connector
IG
Main switch
IL
Line switch for auxiliaries
IM
Line switch for fan motor
L(1,2,3)
Phase
LAF
High flame operation light (only progressive and double stage burners)
LB
Burner lockout signaling light
LBF
Low flame operation light (only progressive and double stage burners)
LEV1
Signaling light for EV1 opening
LEV2
Signaling light for EV2 opening
LF
Burner in operation light (only single stage burners)
LGB/LMG21.33 (**)
Landis flame control device (single stage burners)
LGB/LMG22.33
Landis flame control device (hi-low flame and progressive burners)
LPG
Gas in the network signaling light
LSPG
Valves leakage signaling light
LT
Intervention of fan motor overload tripped signaling light (only three phase burners)
LTA
Ignition transformer in operation signaling light
MC1
Terminal block for three-phase power supply connection and three-phase motor connection
MCM
Terminal block for fan motor supply connection
MV
Fan motor
N
Neutral
PA
Air pressure switch
PE
Earth connection
PGMAX
Maximum gas pressure switch (optional, if fitted remove the bridge in the connector)
PG
Minimum gas pressure switch
PS
Reset pushbutton for flame control device
SQN30.151
Landis servocontrol for air damper (hi-lo flame burners)
SQN30.251
Landis servocontrol for air damper (progressive burners)
SQN70.224A20
Landis servocontrol for air damper (hi-lo flame burners)
SQN70.424A20
Landis servocontrol for air damper (progressive burners)
ST
Thermostats or pressure switches group
STA4.5B0.37/63N21L
Berger servocontrol for air damper (hi-lo flame burners)
STA12B3.41/63N21L
Berger servocontrol for air damper (progressive burners)
STA15B3.41/83N21L
Berger servocontrol for air damper (progressive burners)
STA6B3.41/63N21L
Berger servocontrol for air damper (hi-lo flame burners)
TA
Ignition transformer
TAB
Pressure switch for high-low flame operation (where fitted, remove the bridge between terminals 6 and 7 on terminal
board MA)
TV
Fan motor overload tripped
VPS504
Dungs valves leakage control device (otional, if fitted remove the bridge on the connector)
(*) Version with separate valves and gas train connector; A - with leakage control, B - without leakage control
(**) With LGB21.33, a bridge between terminals 7 and 9 must be fitted
SERVOCONTROL CAMS
ATTENTION:
1 - Power supply: 400V 50Hz 3N a.c.three-phase and 230V 50Hz 2N a.c. monophase
2 - Don’t reverse phase and neutral
3 - Ensure the burner is properly earthed
LANDIS
SQN30.251
BERGER
STA1xB3.41/x
LANDIS
SQN70.424A20
I
ST2
RED
High flame
II
ST0
BLUE
Stand-by
III
ST1
ORANGE
Low flame
V
MV
BLACK
Not used
Summary of Contents for P20
Page 30: ...PART II OPERATION 30 Electrical diagram code 18 020 Burners P45 C TN C AB C PR ...
Page 32: ...PART II OPERATION 32 Electrical diagram code 04 622 Burners P20 P30 C MD ...
Page 33: ...PART II OPERATION 33 Electrical diagram 04 642 Burners P45 C MD ...
Page 34: ...PART II OPERATION 34 Electrical diagram code 05 615 Burner P65 C MD ...
Page 35: ...PART II OPERATION 35 SPARE PARTS ...
Page 36: ...PART II OPERATION 36 SPARE PARTS Burners P20 P30 C TN C AB ...
Page 38: ...PART II OPERATION 38 SPARE PARTS Burners P45 C TN C AB P50 C TN P65 C AB ...
Page 40: ...PART II OPERATION 40 SPARE PARTS Burners P20 P30 C MD ...
Page 42: ...PART II OPERATION 42 SPARE PARTS Burners P45 P65 C MD ...
Page 52: ......