Which characteristic refers to a boiler that requires simple operation and has low maintenance costs?

The fire tube design is characterized by its simple operation and relatively low maintenance costs, making it an efficient choice for various applications. In this design, hot gases produced by combustion pass through tubes that are surrounded by water, allowing heat exchange to occur efficiently. This simplicity often translates into fewer components and easier access for maintenance, resulting in lower operational costs over time.

Boilers with fire tube designs are generally robust and easier to understand for operators, which enhances their suitability for facilities that may not have specialized boiler operating personnel. Additionally, the durable construction of these boilers contributes to their longevity and lowers the frequency of repairs.

In contrast, other designs, such as water tube or condensing designs, may involve more complex operational requirements and higher maintenance demands due to their construction and the conditions under which they operate. Modulating designs also introduce additional controls that can increase complexity. Thus, the fire tube design stands out for its straightforwardness, making it a more practical option for those seeking a reliable and cost-effective boiler solution.