Which of the following is a safety guideline for using a portable gas appliance?

Following manufacturer instructions is crucial for safe use of a portable gas appliance because these guidelines are specifically tailored to ensure safe operation and compliance with safety standards. Each appliance can have unique features and requirements, such as ventilation needs, appropriate fuel types, and specific operational procedures that must be adhered to in order to prevent accidents, fires, or carbon monoxide poisoning.

Manufacturer instructions provide essential information on how to set up, operate, and maintain the appliance safely. Ignoring these instructions can lead to hazardous situations, potentially compromising the safety of the user and others nearby. Additionally, they may include important maintenance schedules and troubleshooting tips that are essential for the longevity and safe functioning of the appliance.