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Basic Info.
Model NO.
LOK16.250A27
Color
Black
Power Supply
220 V - 240 V 50/60Hz
Weight
3kg
Primary Fuse (External)
Max. 16 a (Slow)
Ptw Max.
5 S
Safety Class
II
Degree of Protection
IP40
Application/Usage
Oil
After Warranty Service
Video Technical Support
Transport Package
Carton
Specification
11X8X 7cm
Trademark
Siemens
Origin
Germany
HS Code
8302600000
Production Capacity
1000
Product Description
Siemens OR LOK16.250A27 Oil Gas Burner Controller For Gas Oil Or Dual-Fuel Forced Draft Burners 
PRODUCT SPECIFICATIONS
Siemens OR LOK16.250A27 Oil Gas Burner Controller For Gas Oil Or Dual-Fuel Forced Draft Burners 
Burner controls
1.For gas, oil or dual-fuel forced draft burners of medium to high capacity
2.With self-checking flame signal amplifier
3. For continuously operating multistage or modulating oil or gas burners of medium to high capacity
3. For continuously operating multistage or modulating oil or gas burners of medium to high capacity
4.With air pressure supervision for checked air damper control.
5.Burner control for oil burners to EN 230: 2005 The LOK16.../LGK16... and this Data Sheet are intended for use by OEMs which integrate the burner controls in their products.
Use
1.Burner controls type LOK16.../LGK16... feature a self-checking flame supervision circuit. The supervision circuit initiates
the required safety actions not only in the case of premature or missing flame signals, but also in the event of 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 required safety actions not only in the case of premature or missing flame signals, but also in the event of 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.
2.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,
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,
3.provided very good flame detector current values are measured in the plant supervised so far by
the LFL1..., and
the LFL1..., and
4.provided the following types of flame detectors are either installed or can subsequently be fitted:
Flame supervision when using LOK16...
- Silicon 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)
Function
In contrast to conventional amplifiers, the signal delivered by the flame detector is handled dynamically and not statically. The flame detector signal is converted to a sequence of control pulses and then fed to the flame relay circuit. The latter is designed such that the flame relay can only be energized by a flame signal of the described form. If the pulses change due to a faulty detector or faulty detector cables, the relay will be deenergized and the burner control triggers the required safety actions. In the case of UV supervision, it must also be ensured that self-ignition of the UV tube (e.g. due to aging) does not simulate a flame signal. For that reason, incident radiation at the UV cell is periodically interrupted by a shutter. In addition to the self-checking facility, the flame signal circuit is subjected to a functional test during the prepurge time. If it does not operate correctly, the startup sequence will be aborted or lockout initiated. Furthermore, if mains voltage drops to a level where safe operation of the burner control is no longer ensured, the burner will automatically shut down. When mains voltage returns to the normal level, the burner control repeats the startup sequence. If the detector signals are only slightly above the minimum levels, such mains voltage fluctuations can also give rise to burner
- The burner control is reset a
lockout however. nd in the start position (terminals 11 and 12 must receive power)
- The air damper is closed. End switch (z) for the fully closed position must feed power from terminal 11 to terminal 8
- All control contacts between terminals 12 and 5 (limit thermostat,
control thermostat, etc.) must be closed
control thermostat, etc.) must be closed
PRODUCT SPECIFICATIONS
| item | value |
| Place of Origin | Germany |
| Brand Name | Siemens |
| Model Number | LOK16.250A27 |
| Product Name | Siemens OR LOK16.250A27 Oil Gas Burner Controller For Gas Oil Or Dual-Fuel Forced Draft Burners |
| Adapter burner | gas burner |
| Weight | 3 |
| Power supply | 220-240V AC 50/60HZ |
| Degree of protection | IP40 |
| Color | Black |
| Delivery time | payment after about 2 days |
| Shipping Term | DHL/UPS/Fedex/TNT |
| Usage | gas burner accessories |
| After Warranty Service | Video technical support |
Siemens OR LOK16.250A27 Oil Gas Burner Controller For Gas Oil Or Dual-Fuel Forced Draft Burners
