Buderus Three-Section Cast Iron Oil-Fired Water Boiler with Burner

A durable three‑section cast‑iron oil-fired water boiler engineered for reliable hydronic heating, long service life, and clean, stable combustion. The 7738000111 ships as a knockdown unit, allowing installers to bring the block sections individually into basements or tight spaces before assembly. Once built, it delivers the same Buderus thermal stability, quiet operation, and combustion efficiency found across the Buderus cast‑iron lineup. This model includes a factory‑matched oil burner and is designed for natural‑draft chimney venting, making it a strong replacement option for older atmospheric oil-fired water boiler.

Key Features
Three‑section cast‑iron heat exchanger providing even heat transfer, corrosion resistance, and long‑term durability.

Knockdown construction for easier transport and assembly in tight mechanical rooms or older homes with limited access.

Factory‑matched oil burner tuned for clean, consistent combustion and proper flame geometry.

Natural‑draft chimney venting ideal for retrofit installations using existing flue systems.

Quiet, low‑vibration operation supported by Buderus’ combustion chamber and block design.

Service‑friendly layout with accessible burner, controls, and piping connections once assembled.

Ideal Applications
Homes needing a mid‑capacity, natural‑draft oil boiler where access constraints make a knockdown unit preferable, while still benefiting from Buderus’ cast‑iron reliability and burner‑matched performance.