This manual covers the Eberspacher D2, D4, and D5 marine air heaters, designed for efficient diesel-powered heating systems in marine environments. Engineered for reliability and performance, these units provide essential warmth and comfort aboard vessels. Their robust construction and specialized design ensure dependable operation even under demanding conditions. Key features include various heat output ranges depending on the specific model, operating on 12V or 24V electrical systems, and requiring careful installation to maintain watertightness and proper ventilation.

The purpose of this comprehensive manual is to guide owners, technicians, and installers through the proper use, maintenance, and troubleshooting of Eberspacher marine heaters. It details critical installation requirements, including mounting, electrical connections, fuel supply, and exhaust systems, all essential for safe and effective operation. Furthermore, the manual outlines recommended maintenance schedules, such as annual inspections and periodic cleaning of components like the combustion chamber, and explains the safety features, including automatic shutoff mechanisms. Adherence to the procedures and specifications within this guide is crucial for ensuring the longevity and optimal performance of your heating system.