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c
onnectIon dIagram
R / W
GP
STB
N
s
equence
AL
Error message (alarm)
EK.. Remote lockout reset button (internal)
EK2 Remote lockout reset button
FS
Flame Signal
FSV Flame signal amplifier
GP
Gas pressure switch
H
Main switch
ION__tab_Ionisation probe
K1...4 Internal Relays
LK
Air damper
LP
Air pressure switch
LR
Modulation
M
Fan motor
NT
Electric power supply
R
Control thermostat / pressure switch
SA
SQN Actuator...
14 / 40
NT
K1
K2/1
K2/2
T
AL
Z
M
H
Si
A
SB / R
W / GP
AL
LK
M
Z
SA
V1
(LR) V2
LP
FS
EK2
t10
tw
t12
t11
SB
Safety limit thermostat
STB Safety limit thermostat
Si
External fuse
W
Limit thermostat / Pressure switch
Z
Ignition transformer
A_tab_Start-up Command (ignition from «R»)
B-B´ Interval for flame ignition
C
Burner in operation position
D
Shut-down controlled by «R»
I
1st Actuator cam
K3
K4
K5
LP
V1
V2
B
B´
C
t1
t3
t3n
t4
TSA
RESET
EK2
D
12
10
3
7
9
4
5
6 11
1
8
t1
Preventilation time
t3
Pre-ignition time
t3n
After-ignition time
t4
Interval between ignition 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»
TSA Ignition safety time
tw
Waiting time
0006160660_202402
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