Giersch MG3.4-ZM-L-N-SD Gas Burner

The Giersch MG3.4-ZM-L-N-SD is an industrial forced-draught natural gas burner designed for commercial and industrial heating systems requiring high thermal output. Its 790–2800 kW output range makes it suitable for hot-water boilers, steam boilers, central boiler rooms, manufacturing facilities and process-heating systems.

The burner features two-stage sliding and modulating operation. This allows its output to be adjusted according to the system’s current heat demand. Modulating control helps maintain a stable operating temperature, reduce unnecessary starts and stops, and optimise fuel consumption.

The MG3.4-ZM-L-N-SD is equipped with a 5.5 kW electric motor and a star-delta starting system. This starting method helps reduce the initial electrical load when the motor is activated. Burner operation is monitored using a UV flame detector, combustion control unit and air-pressure switch.

Depending on the available gas pressure and project requirements, the burner can be equipped with a KEV DN65, DN80 or DN100 gas train. The burner and gas train must be selected according to the required heating output and combustion-chamber resistance.

Main features:

• Brand: Giersch
• Model: MG3.4-ZM-L-N-SD
• Product type: Industrial forced-draught gas burner
• Fuel type: Natural gas LL and E
• Burner output: 790–2800 kW
• Operating mode: Two-stage sliding/modulating
• Electrical connection: 10 A, 3/N/PE, 400 V, 50 Hz
• Maximum current consumption: 12.5 A
• Motor output: 5.5 kW
• Starting system: Star-delta starter
• Flame monitoring: UV flame detector
• Burner control unit: LFL1.322
• Air-pressure switch: LGW 50
• Maximum gas inlet pressure: 300 mbar
• Gas-train options: KEV DN65, DN80 and DN100
• Approximate weight: 125 kg
• Approximate sound level: 84 dB(A)
• Compliance standard: DIN EN 676
• Optional version: Burner tube extended by 200 mm