Who must furnish a control diagram and boiler operation instructions?

The correct answer is that the installer must furnish a control diagram and boiler operation instructions. The role of the installer is crucial because they are directly responsible for the implementation of the boiler system. This includes ensuring that the control systems are properly set up and tailored to the specific requirements of the installation site.

Providing a control diagram is essential as it gives users a clear understanding of how the boiler operates, including various settings, controls, and safety features. The operation instructions are vital for safe and efficient boiler use, guiding users on how to operate the equipment correctly, troubleshoot common issues, and maintain safety protocols.

The manufacturer's role typically involves providing equipment specifications and general operational guidelines, but specific installation diagrams and operational instructions tailored to the installed system are within the purview of the installer. The engineer may provide design specifications and recommendations but relies on the installer to ensure that these are executed correctly in practice. Maintenance personnel focus on the upkeep and repair of systems post-installation and are not responsible for providing operational guidelines.