What should technicians be aware of when servicing gas appliances?

Technicians servicing gas appliances should be aware of the operational differences of various gases because different types of gas, such as natural gas and propane, have distinct properties, combustion characteristics, and energy content. Understanding these differences is crucial for ensuring safe installation and servicing, as it directly affects how the appliance operates and the efficiency of combustion. For example, the air-gas mixture requirements and burner adjustments may vary depending on whether a technician is working with natural gas or propane. This knowledge helps in preventing improper combustion, which can lead to safety hazards such as carbon monoxide production or inefficient appliance performance.

Being aware of these operational differences also involves understanding how the variations in gas can impact the appliance's design and function, leading to better troubleshooting and maintenance practices. Technicians must adhere to specific codes and safety practices related to the gas type to ensure compliance and safety for users.