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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».
LOK16...
For flame supervision with a silicon photocell detector RAR9... for oil
burners
Preferred use:
Flash-steam
generators
LOK16.140A27*
t1
10 s
TSA
4 s
TSA´
---
t3
2 s
t3´
From startup command (with air pressure supervision: from
receipt of air pressure signal)
t3n
10 s
t4
8 s
t4´
---
t5
4 s
t6
10 s
t7
2 s
t8
30 s
t9
---
t10
6 s
t11
Optional
t12
Optional
t13
10 s
t16
4 s
t20
32 s
LGK16...
For flame supervision with flame detector QRA53.../QRA55... or ionization probe
Preferred use:
Flash-steam
generators
LGK16.122A27* LGK16.133A27
t1
10 s
TSA
2 s
TSA´
2 s
t3
4 s
t3´
4 s
t3n
---
t4
6 s
t4´
6 s
t5
4 s
t6
10 s
t7
2 s
t8
30 s
t9
2 s
t10
6 s
t11
Optional
t12
Optional
t13
10 s
t16
4 s
t20
32 s
Building Technologies Division
Infrastructure & Cities Sector
Universal
Medium- or
application
heavy-oil burners
LOK16.250A27*
LOK16.650A27
22 s
5 s
---
2.5 s
15 s
7.5 s
---
7.5 s
15 s
2.5 s
47 s
---
10 s
15 s
5 s
34.5 s
12.5 s
Flash-steam
D (also suited
generators
for direct-fired
air heaters),
F
LGK16.322A27* LGK16.333A27* LGK16.335A27* LGK16.622A27* LGK16.635A27*
9 s
35.5 s
3 s
2 s
3 s
2 s
3 s
4 s
---
4 s
---
---
6 s
10 s
---
10 s
3 s
10 s
14.5 s
12 s
3 s
2 s
29 s
65 s
3 s
2 s
6 s
8 s
14.5 s
12 s
3 s
4 s
60 s
---
66 s
Prepurge time with air damper fully open
5 s
Safety time or first safety time with burners using a pilot burner
---
Safety time or first safety time with burners using a pilot burner
2.5 s
Preignition time
Long preignition time
15 s
Postignition time (ignition transformer connected to terminal 15)
7.5 s
Interval between start of safety time and release of valve at
terminal 19
---
Interval between start of safety time and release of valve at
terminal 19
7.5 s
Interval between end of interval (t4/t4´) and release of load
controller or valve at terminal 20
15 s
Postpurge time (identical to permissible afterburn time (t13))
2.5 s
Switch-on delay of fan motor (M2)
91 s
Duration of startup without «t11» and «t12»
---
Second safety time with burners using a pilot burner
10 s
Interval from startup to the beginning of the air pressure check
Air damper running time to the fully open position
Air damper running time to the low-fire position
15 s
Permissible afterburn time
5 s
Interval from startup to the open command for the air damper
Interval to self-shutdown of the sequence switch
D, A
31.5 s
3 s
3 s
6 s
6 s
---
11.5 s
11.5 s
11.5 s
17 s
3 s
69 s
3 s
11.5 s
17 s
6 s
26 s
Legend of times
GB
F, I
37 s
65 s
2.5 s
2 s
5 s
2 s
5 s
4 s
2.5 s
4 s
---
---
12.5 s
10 s
15 s
10 s
12.5 s
10 s
15 s
12 s
2.5 s
2 s
74 s
95 s
5 s
2 s
10 s
8 s
15 s
12 s
5 s
4 s
22 s
---
B, NL
66 s
2.5 s
5 s
5 s
2.5 s
---
12.5 s
15 s
12.5 s
15 s
2.5 s
103 s
5 s
10 s
15 s
5 s
---
7/24
CC1N7785en
06.03.2012
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