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Specific features when
using LOK16...
Specific features when
using LGK16...
Warning notes
2/20
Siemens Building Technologies
HVAC Products
The burner controls are therefore suited for use in all types of oil- or gas-fired combus-
tion plants where self-checking flame supervision systems are either mandatory or rec-
ommended:
-
Burners that operate continuously
Burners in intermittent operation that, in the case of great heat demand, may oper-
-
ate continuously for more than 14 hours, e.g. in plants using boiler sequencing
-
Burners that need to comply with the German TRD 411 and TRD 412 regulations
for steam boilers
Burners in plants where, for specific safety requirements, supervision of the burner
-
by a self-checking flame supervision system seems advisable
The control sequence and the connection circuitry of the LOK16... / LGK16...
-
burner controls are identical to those of the LAL2... and LFL1... respectively (with
the exception of type LFL1.148), so that existing combustion plants 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 sub-
sequently be fitted:
-
Selenium photocell detector RAR...
Flame detector QRA53... / QRA55...
-
-
Ionization probe
Flame detector QRA53... / QRA55... together with ionization probe, e.g. in the case
-
of burners with pilot burner (also refer to Data Sheet 7712)
To avoid injury to persons, damage to property or the environment, the following
warning notes should be observed!
Do not open, interfere with or modify the unit!
•
All activities (mounting, installation and service work, etc.) must be performed by
qualified staff
•
Before performing any wiring changes in the connection area of the LOK16... /
LGK16..., completely isolate the burner control from the mains supply (all-polar
disconnection)
•
Ensure protection against electric shock hazard by providing adequate protection
for the burner control's terminals
•
Check to ensure that wiring is in an orderly state
•
Fall or shock can adversely affect the safety functions. Such units may not be put
into operation, even if they do not exhibit any damage
•
Do not press the lockout reset button on the unit or the remote reset button
(input 21) for more than 10 seconds, since this would damage the lockout re-
lay inside the unit
CC1N7785en
15.10.2003
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