Burner controls (LMV/LME/LFL), flame detectors (QRA/QRB/QRI) and actuators (SQM) — the brain and the safety of the burner
Siemens is the brain of the burner. Where the pump, filter and nozzle handle the mechanics, it is the Siemens burner control that manages the entire sequence — pre-purge, ignition, flame supervision, output control and safe shutdown — and makes sure nothing happens in the wrong order. The programme spans from complete systems such as the LMV5 (which combines burner management, flame supervision and air-fuel ratio control in one unit, with O₂ trim for maximum efficiency) and the LMV3 for smaller plant, to the classic LME, LFL and LGB control boxes that sit in a very large installed base. There is a flame detector for every need: QRA for UV supervision, QRB photocells for light oil and gas, and QRI for infrared detection. The SQM series actuators position dampers and valves precisely, so that air and fuel always meet in the right ratio. For Nordic, marine and offshore projects, Siemens is both a safety component and an efficiency component: the right control box and the right flame detector keep the burner reliable, energy-efficient and within emission requirements — and make it possible to modernise an older burner instead of replacing the whole plant. The same control and safety matter at sea, where the North Sea and the Baltic are SECA zones with their own strict requirements. The controls are fuel-independent and follow the transition to renewable liquid fuels such as HVO. We carry Siemens as spares for the large installed base in industry, process, projects and marine.
Key points:
- Burner controls that manage the entire sequence: pre-purge, ignition, flame supervision, output control, safe shutdown
- LMV5 (with O₂ trim) and LMV3 for modern burner management; LMO/LME/LFL/LGB for the large installed base of small and medium burners
- Flame detectors for every need: QRA (UV), QRB (photocell), QRI (infrared)
- SQM actuators position dampers and valves for the exact air-fuel ratio
- Safety + efficiency + modernise rather than replace — spares for industry, process, projects, marine
Model overview (product families):
| Product group | Series / type | Function |
|---|---|---|
| Burner management system | LMV51 / LMV52 | Burner control + flame supervision + air-fuel ratio control, O₂ trim |
| Burner control | LMV36 / LMV37 | Electronic compact control for small/medium burners |
| Oil burner control (compact) | LMO14 / LMO24 (e.g. LMO14.111C2), LOA | Compact control and flame supervision for small/medium oil burners |
| Control box (classic) | LME (e.g. LME21/LME41), LFL, LGB | Sequence control and flame supervision, large installed base |
| Flame detector | QRA (UV), QRB (photocell), QRI (infrared) | Detects the flame and locks out on flame failure |
| Actuator | SQM10 / SQM45 / SQM48 / SQM50 | Positions dampers and fuel valves (air-fuel ratio) |
| Display / accessories | AZL, PLL52 (O₂ trim) | Commissioning, display, O₂ monitoring |
We compile the exact model and part number list from the Siemens combustion controls catalogue on request (no fixed part number table published here).
Find the right Siemens control or flame detector — contact us at info@arnenielsen.dk.
Frequently asked questions about Siemens
Is Siemens distributed by Arne Nielsen A/S?
Yes. Arne Nielsen A/S has supplied burners, boilers and spare parts to professional customers since 1969, and carries Siemens as part of its programme for Nordic, marine, offshore and project installations. On this microsite the focus is on those segments — for sales inside the UK please contact your local distributor.
Can you supply spare parts for older or discontinued Siemens models?
Often, yes. We hold a strong spare-parts position and can also help with older and discontinued models. Tell us the model and the details from the nameplate or type label, and we will identify the correct part — write to us at info@arnenielsen.dk.
How do I order Siemens from Arne Nielsen A/S?
Contact us with the model or part number and the quantity you need, and we will confirm availability and delivery. Reach us at info@arnenielsen.dk or on +45 56 21 50 50. For sales inside the UK please contact your local distributor.
Learn more about Arne Nielsen A/S, or browse all Siemens news and updates.
“This is a “language marketing” microsite for our Nordic, marine, offshore and project sales. For sales inside the UK please contact your local distributor. Please note that we sometimes carry some discontinued spare parts that may no longer be available in your territory.”
