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ENGLISH
WIRING DIAGRAM AND OPERATION CONTROL SEQUENCE OF
EQUIPMENT LME 21...(WHEN USING THE CONNECTION WITH SOME
ACTUATORS, IT IS NECESSARY TO COMPLY WITH THE REQUIREMENTS
OF EN 676)
I
1st Actuator cam
t1
Preventilation time
t1´
Ventilation time
t3
Pre-ignition time
t3n
After-ignition time
t4
Interval between ignition «Off» and release of «BV2»
t10
Available time for detecting the air pressure of the pressure switch
t11
Programmed opening time for actuator «SA»
t12
Programmed closing time for actuator «SA»
t22
2° safety time
TSA Ignition safety time
tw
Waiting time
Equipment or programmer
LME 21,350 C2
LME 21,430 C2
TSA
t1
s
s
5
30
3
40
24 / 36
0006080872_201711
AGK25...
PTC resistance
AL
Error message (alarm)
BCI
Burner Communication Interface
BV... Fuel Valve
CPI
Closed Position Indicator
Dbr.. Wiring jumper
EK.. Remote lockout reset button (internal)
EK2 Remote lockout reset button
ION
Ionisation probe
FS
Flame Signal
FSV Flame signal amplifier
GP
Gas pressure switch
H
Main switch
HS
Auxiliary contactor, relay
ION
Ionisation probe
K1...4 Internal Relays
KL
Low flame
LK
Air damper
LKP Air damper position
LP
Air pressure switch
LR
Modulation
M
Fan motor
MS
Synchronous motor
NL
Rated load
NT
Electric power supply
QRA... Flame Detection
QRC... Blue-flame detector bl blue br brown sw black
R
Control thermostat / pressure switch
RV
Gas adjustment device
SA
SQN Actuator...
SB
Safety limit thermostat
STB Safety limit thermostat
Si
External fuse
t
Time
W
Limit thermostat / Pressure switch
Z
Ignition transformer
ZV
Pilot gas valve
A_tab_Start-up Command (ignition from «R»)
B-B´ Interval for flame ignition
C
Burner in operation position
C-D
Burner operation (generation of heat)
D
Shut-down controlled by «R»
Burner will be immediately shut down
Burner control will be immediately ready for new start-up
t3
t3n
t4
s
s
s
2
4,5
10
2
2,5
8
t11
t12
s
s
-
-
-
-
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