Fuel oil burner WGL30-40

dual-fuelnatural gasgas

Overview
Weishaupt WGL30–40 dual‑fuel burners operate with gas or oil and are designed for commercial and industrial heating applications. Gas is normally used as the main fuel; remote fuel changeover can be effected via an optional field‑bus expansion module.

Key features

• Digital combustion management provides precise control so the burner supplies only the heat required by the boiler.
• Oil pump driven by a separate motor and mechanically disconnected during gas operation to protect the pump and save electrical energy.
• Electronically controlled air damper closes fully on shutdown to prevent cooling of the combustion chamber.
• Sound‑attenuated air inlet housing to reduce noise emissions.
• Robust design with high‑quality materials for long service life.
• Specially developed mixing assembly allows operation at lower gas inlet pressures, enabling smaller valve train diameters.
• Combustion manager with integrated plug console: coded, numerically labelled plugs for quick component removal and reduced connection errors.

Fuels / Compatibility

• Suitable for Class D and Class A2 gas oils (BS 2869) and heating oils EL / low‑sulphur EL per DIN 51603‑1.
• Blended gas oil with biogenic admixture up to 20.9% (EL A Bio), optionally up to 30.9%.
• Paraffinic gas oil (EL P per DIN/TS 51603‑8) can be used.
• Gas side: natural gas E, natural gas LL, and LPG B/P supported; supports hydrogen blends up to 20 vol%.

Benefits

• High efficiency through precise electronic control and digital combustion management.
• Reduced noise thanks to the sound‑attenuated air inlet housing.
• Long service life due to quality materials and proven design.
• Cost‑effective solution with favorable price‑to‑performance ratio.
• Future‑ready integration: digital combustion management enables remote control, monitoring, fault diagnosis and building‑management‑system integration.

Product family / Application
The WGL integrates into the W‑series product family, combining benefits of WG and WL burners with dual‑fuel flexibility. Rated capacity range for the WGL30–40 family is 70 to 550 kW, suitable for commercial and light industrial boilers.

Product parts / optional components

• Digital combustion manager with plug console (coded/numbered plugs).
• Expansion modules for analogue I/O and digital interfacing (field‑bus expansion for remote fuel changeover).
• O2 module and O2 probe as external plug‑in components for enhanced combustion regulation and safety.

Capacity ranges (table)
Type | Rating (kW)
WGL30/1 | 70 - 340
WGL40/1 | 125 - 550

Technical specifications

• Model family: WGL30–40
• Rated overall capacity family: 70 to 550 kW
• Individual types and ratings: WGL30/1 (70–340 kW), WGL40/1 (125–550 kW)
• Fuel types supported: Class D and A2 gas oils, blended gas oil with biogenic admixture (up to 20.9% standard / up to 30.9% optional), paraffinic gas oil; natural gas (E, LL), LPG B/P; hydrogen blends up to 20 vol% on gas side
• Control: Digital combustion management with integrated combustion manager and plug console
• Optional interfaces: Expansion modules for analogue I/O and digital interfacing (field‑bus expansion)
• Noise reduction: Sound‑attenuated air inlet housing
• Mechanical: Oil pump driven by separate motor (disconnected when firing on gas)
• Product IDs referenced: 23531002, 23541002