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Vitomax LW

Viessmann Commercial
Low Pressure Hot Water Boiler

Vitomax LW

Viessmann Vitomax LW – Low Pressure Hot Water Boiler
High‑efficiency industrial low‑pressure hot water boiler delivering 0.65 to 22.0 MW, designed for flow temperatures up to 110 °C, flexible multi‑fuel operation including 100% hydrogen, and reliable performance in commercial and industrial heating systems.

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Features

  • Economical & Efficient Heat Generation

    Efficiency over 95.5% Designed for continuous industrial and commercial operation Optimized for reliable, energy‑efficient hot water supply Suitable for large heating centres and process heating

  • Hydrogen‑Ready & Multi‑Fuel Flexibility

    Suitable for up to 100% hydrogen operation Wide range of compatible fuels: Hydrogen Natural gas Light fuel oil (EL) Heavy fuel oil (Mazut 100) Biogases and bio‑oils Animal fats Supports future decarbonisation strategies

  • Low NOx Emissions

    Available as low‑NOx version Emissions: < 70 mg/Nm³ (gas operation) < 150 mg/m³ (oil operation) Clean combustion with low combustion chamber loading

  • Robust & Low‑Stress Design

    Corner stays arranged in pairs reduce mechanical stress Optimized flame tube and smoke tube geometry for clean combustion Designed for long service life and operational stability Low pressure drop on flue gas side for efficient operation

  • Natural Circulation & Simplified Hydraulics

    Low‑stress, space‑saving design promotes natural water circulation No additional boiler pumps required Simplifies hydraulic connections and system design

  • Proven Reliability & Fast Deployment

    Based on proven Viessmann technology Ideal for: New installations System upgrades and modernization Enables quick commissioning and reliable operation

Technical Documents

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