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Building Technologies Division
CC1N7785en
20.11.2017
Type summary
The type references given below apply to the LOK16 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 the order of the startup sequence, valid for 50 Hz mains
frequency. At 60 Hz, the times are about approx. 17% 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 photocell detector RAR9... for oil burners
Preferred use:
Flash-steam
generators
Universal
application
Medium- or
heavy-oil burners
Type
LOK16.140A27*
LOK16.250A27*
LOK16.650A27
Article
no.
BPZ:LOK16.140A27
BPZ:LOK16.250A27
BPZ: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
TSA´
---
---
---
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
LOK16...
