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Building Technologies Division CC1N7785en
Infrastructure & Cities Sector 06.03.2012
Type summary
Switching times are given in the order of the startup sequence, valid for 50 Hz mains frequency. At 60 Hz, the times are about 20% shorter.
The type references apply to burner controls operating on AC 230 V, 50...60 Hz.
* For burner controls operating on AC 100...110 V, 50...60 Hz, the last 2 digits of the type reference read «17» in place of «27».
For flame supervision with a silicon photocell detector RAR9... for oil
burners
Preferred use:
Flash-steam
generators
Universal
application
Medium- or
heavy-oil burners
LOK16.140A27* LOK16.250A27* LOK16.650A27 Legend of times
t1 10 s 22 s 66 s Prepurge time with air damper fully open
TSA 4 s 5 s 5 s Safety time or first safety time with burners using a pilot burner
TSA´ --- --- --- Safety time or first safety time with burners using a pilot burner
t3 2 s 2.5 s 2.5 s Preignition time
t3´ From startup command (with air pressure supervision: from
receipt of air pressure signal)
Long preignition time
t3n 10 s 15 s 15 s Postignition time (ignition transformer connected to terminal 15)
t4 8 s 7.5 s 7.5 s Interval between start of safety time and release of valve at
terminal 19
t4´ --- --- --- Interval between start of safety time and release of valve at
terminal 19
t5 4 s 7.5 s 7.5 s Interval between end of interval (t4/t4´) and release of load
controller or valve at terminal 20
t6 10 s 15 s 15 s Postpurge time (identical to permissible afterburn time (t13))
t7 2 s 2.5 s 2.5 s Switch-on delay of fan motor (M2)
t8 30 s 47 s 91 s Duration of startup without «t11» and «t12»
t9 --- --- --- Second safety time with burners using a pilot burner
t10 6 s 10 s 10 s Interval from startup to the beginning of the air pressure check
t11 Optional Air damper running time to the fully open position
t12 Optional Air damper running time to the low-fire position
t13 10 s 15 s 15 s Permissible afterburn time
t16 4 s 5 s 5 s Interval from startup to the open command for the air damper
t20 32 s 34.5 s 12.5 s Interval to self-shutdown of the sequence switch
For flame supervision with flame detector QRA53.../QRA55... or ionization probe
Preferred use:
Flash-steam
generators
Flash-steam
generators
D (also suited
for direct-fired
air heaters),
F
D, A GB F, I B, NL
LGK16.122A27* LGK16.133A27 LGK16.322A27* LGK16.333A27* LGK16.335A27* LGK16.622A27* LGK16.635A27*
t1 10 s 9 s 35.5 s 31.5 s 37 s 65 s 66 s
TSA 2 s 3 s 2 s 3 s 2.5 s 2 s 2.5 s
TSA´ 2 s 3 s 2 s 3 s 5 s 2 s 5 s
t3 4 s 3 s 4 s 6 s 5 s 4 s 5 s
t3´ 4 s --- 4 s 6 s 2.5 s 4 s 2.5 s
t3n --- --- --- --- --- --- ---
t4 6 s 6 s 10 s 11.5 s 12.5 s 10 s 12.5 s
t4´ 6 s --- 10 s 11.5 s 15 s 10 s 15 s
t5 4 s 3 s 10 s 11.5 s 12.5 s 10 s 12.5 s
t6 10 s 14.5 s 12 s 17 s 15 s 12 s 15 s
t7 2 s 3 s 2 s 3 s 2.5 s 2 s 2.5 s
t8 30 s 29 s 65 s 69 s 74 s 95 s 103 s
t9 2 s 3 s 2 s 3 s 5 s 2 s 5 s
t10 6 s 6 s 8 s 11.5 s 10 s 8 s 10 s
t11 Optional
t12 Optional
t13 10 s 14.5 s 12 s 17 s 15 s 12 s 15 s
t16 4 s 3 s 4 s 6 s 5 s 4 s 5 s
t20 32 s 60 s --- 26 s 22 s --- ---
LOK16...
LGK16...
