What should be the first step in an inspection of a combustion appliance?

The first step in an inspection of a combustion appliance should indeed focus on checking for visual signs of wear, damage, or improper installation. This preliminary assessment is crucial because it allows the inspector to identify any obvious issues that could pose safety risks or affect the appliance's performance.

Visual signs of wear and damage can include cracks, corrosion, leaks, or loose connections, all of which may indicate that the appliance is not functioning correctly or safely. Additionally, assessing the installation can reveal whether the appliance was set up according to the manufacturer's guidelines and local codes, which is essential for safe operation.

Starting with a visual inspection helps to prioritize further actions, as any significant issues identified at this stage would need to be addressed before proceeding to more technical evaluations, such as testing gas flow rates or calculating energy usage. This step provides a solid foundation for a thorough and safe inspection process, ensuring that any risks or problems are detected early.