Siemens LGK16.333A27 - Use; Flame Supervision for LOK16; Flame Supervision for LGK16

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Building Technologies Division CC1N7785en
20.11.2017
Use
Burner controls type LOK16.../LGK16... feature a self-checking flame supervision
circuit.
The flame supervision circuit initiates the safety actions in the case of... :
• ... premature or missing flame signal
• ... any kind of fault on the flame detector, the detector cables or the flame signal
amplifier that could simulate a flame signal during burner operation
The burner controls are therefore suited for use in all types of oil- or gas-fired
combustion plant where self-checking flame supervision systems are either mandatory
or recommended.
For example:
- Burners that operate continuously
- Burners in intermittent operation that, in the case of great heat demand, may
operate continuously for more than 14 hours, e.g. in plant using boiler sequencing
- Burners that need to comply with the German TRD 411 and TRD 412 regulations
for steam boilers
- Burners in plant where, for specific safety requirements, supervision of the burner
by a self-checking flame supervision system seems advisable
- The control sequence and connection circuitry of the LOK16…/LGK16… burner
controls are identical to those of the LAL2... and LFL1... respectively (with the
exception of the LFL1.148), so that existing combustion plant can also be equipped
with self-checking burner controls,
 provided very good flame detector current values are measured in the plant
supervised so far by the LFL1..., and
 provided the following types of flame detectors are either installed or can
subsequently be fitted:
- Photocell detector RAR9
- Flame detector QRA53.../QRA55...
- Ionization probe
- Flame detector QRA53.../QRA55... together with ionization probe, e.g. in the case
of burners using a pilot burner (also see Data Sheet N7712)
Flame supervision
when using LOK16...
Flame supervision
when using LGK16...