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Spare parts for gas and oil burners and boilers: gas valves, nozzles, ignition electrodes and transformers, pressure switches, flame detectors, fuel pumps, servomotors and burner control boxes.

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Over 100,000 part numbers from every major manufacturer, brought into one structure so that parts from different brands can be compared and replaced.

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Yes. The order number, the manufacturer model and any supplier code all lead to the same part, so a number from an old invoice or a nameplate is enough.

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The catalogue records what the manufacturer replaced it with, and which parts from other brands do the same job — together with the conditions that apply.

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Siemens Combustion control unit LME21.430C2BT

SKU LME21.430C2BT Brand Siemens

Photos

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Key specifications

Fuel	gas
Firing stages	single-stage and two-stage
Air supply	forced draught
Cycle type	intermittent operation
Flame monitoring	automatic

all specifications (5) ↓

339.41 EUR

308.55EUR

in stock · 1

incl. 21% VAT · 255.00 EUR excl. VAT · shipping calculated at checkout

Worldwide shipping from stock
Original manufacturer part
Dispatch within 24 h for stocked items

Description

Siemens LME21.430C2BT is a combustion control unit for gas burners. It is designed for single-stage and two-stage forced draught burners in intermittent operation. The unit manages start-up, flame monitoring, and operating cycles, and initiates emergency shutdown in case of faults.

Further details

Control Functions	start-up, flame monitoring, control of operating cycles and emergency shutdown
Operating sequence	pre-purge, ignition, flame monitoring and transition to operating mode

Choosing and fitting

Control boxes of this type are selected by matching the exact series and type designation to the burner or boiler specification. Key parameters include supply voltage, safety and pre-purge times, and the flame detection method (ionisation, UV, or IR). The base or plug pattern must also be compatible. Parts of this class are generally not interchangeable across series, even within the same brand. Always verify the existing control's designation and wiring before ordering.

All specifications

Fuel	gas
Firing stages	single-stage and two-stage
Air supply	forced draught
Cycle type	intermittent operation
Flame monitoring	automatic

Part numbers

SKU	LME21.430C2BT
Additional article	884.124.072