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Building Technologies Division    CC1N7451en 
  20.11.2017 
Type summary 
The type references given below apply to the LFL without plug-in base and without 
flame detector. For ordering information for plug-in bases and other accessories, see 
Accessories. 
 
Switching times are given in seconds, in the burner startup sequence, valid for 50 Hz 
mains frequency. At 60 Hz, switching times are about 17 % shorter. 
The type references apply to burner controls operating on AC 230 V, 50...60 Hz. 
 
 
Flash steam 
generators 
Flash steam 
generators 
Incl. 
stationary 
air heaters 
      ²)  Large 
atmospheric 
burners 
Type  LFL1.122 ¹)  
02 series  
LFL1.133 ¹)  
02 series 
LFL1.322 ¹) 
02 series
LFL1.333 ¹) 
02 series
LFL1.335 ¹) 
01 series 
LFL1.622 ¹) 
02 series
LFL1.635 ¹) 
01 series  
LFL1.638 
01 series
Article 
no. 
BPZ:LFL1.122  BPZ:LFL1.133  BPZ:LFL1.322 BPZ:LFL1.333 BPZ:LFL1.335 BPZ:LFL1.622  BPZ:LFL1.635 BPZ:LFL1.638 
Times in seconds (s)
t1  10  9  36 31 37 65 66  66
TSA  2  3  2 3 2.5 2 2.5  2.5
TSA´  2  3  2 3 5 2 5  5
t3  4  3  4 6 5 4 5  5
t3´  4  ---  4  6  2.5  4  2.5  2.5 
t4  6  6  10 11.5 12.5 10 12.5  12.5
t4´  6  ---  10 11.5 15 10 15  15
t5  4  3  10 11.5 12.5 10 12.5  12.5
t6  10  14.5  12 18 15 12 15  15
t7  2  3  2  3  2.5  2  2.5  2.5 
t8  30  29  65 69 74 95 103  103
t9  2  3  2 3 5 2 5  7.5
t10  6  6  8 11.5 10 8 10  10
t11  Optional 
t12  Optional 
t13  10  14.5  12 17 15 12 15  15
t16  4  3  4 6 5 4 5  5
t20  32  60  --- 26 22 --- ---  ---
 
¹) Available as AC 100...110 V versions; add type suffix «-110 V» when ordering 
²) Reversed polarity protection conforming to Dutch installation standard: AGM30 
 
Legend of times     
    
TSA  Ignition safety time  t8  Duration of startup sequence (without «t11» and «t12») 
TSA‘  Ignition safety time or first safety time  t9  Second safety time with burners using pilot burners 
  (startup with burners using pilot burners)  t10  Interval from start to the beginning of the air pressure  
t1  Prepurge time with air damper open    check, excluding running time of air damper 
t3  Preignition time  t11  Air damper running time to the OPEN position 
t3‘  Preignition time (long)  t12  Air damper running time to the low-fire position MIN 
t4  Interval between voltage at terminals 18 and 19  t13  Permissible afterburn time 
t4‘  Interval between start of TSA´ and release of valve at   t16  Interval until OPEN command for the air damper is given
  terminal 19  t20  Interval to the self-shutdown of the sequence switch  
t5  Interval between power at terminals 19 and 20    after startup 
t6  Postpurge time (with «M2»)     
t7  Interval between start command and power at terminal 7     
  (start delay for «M2»)