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Operation sequence of the burner
S8470
Legend to the sequence diagrams:
Valve proving takes place depending on the parameter:
1)
Parameter: short / long pre-ignition time
short / long oil pump switch - switch-on time -
time
3)
Parameter: with/without alarm in the event of start prevention
5)
28 s =
maximum time safety phase, followed by lockout
6)
5 s =
time between occurrence of start prevention and
signalling
0°
Position as supplied (0°)
90° Actuator fully open (90°)
Technical description of the burner
Phase number
Parameter number
Parameter number
Safety limit thermostat (STB)
T
Control thermostat or pressurestat (R)
T
Flame signal (FS)
Air pressure switch (LP)
p
a
Pressure switch-min (Pmin)
P
Pressure switch-max (Pmax)
P
Motor (M)
Ignition transformer (Z)
Safety valve (SV)
Fuel valve 1 (V1)
Fuel valve 2 (V2)
Fuel valve 3 (V3)
Alarm (AL)
90°
Nominal load
Postpurge position
Ignition load
Low-fire
No-load position
0°
90°
Nominal load
Postpurge position
Ignition load
Low-fire
No-load position
0°
90°
Nominal load
Postpurge position
Ignition load
Low-fire
No-load position
0°
Startup
t1
00
02
10
12
22
24
30
36
38
217
211
266 267
265
5)
6)
214 264
217
28 s
5 s
1)
3)
Assignment of times:
t1
Prepurge time
TSA1 Safety time 1
Signal ON
Signal OFF
Any signal is allowed
In standby: after referencing, the actuator is driven to
the no-load position
13
GB
Operation
Shutdown
TSA1
40
42
44
60
62
70
72
74
270
273
274
269 268
212
Fig. 8
20109674
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