What must be followed for the operation of the automatic main gas control valve and other electrical devices?

The operation of the automatic main gas control valve and other electrical devices must adhere to wiring diagrams that are certified or approved by the original appliance manufacturer. This requirement ensures that the installation and operation align with the specific design and safety standards established by the manufacturer. These diagrams provide critical information about the proper connections, components, and configurations necessary for safe and efficient operation.

By following the manufacturer's approved wiring diagrams, technicians help prevent issues such as electrical faults, improper functioning of the gas valve, and potential safety hazards. Each appliance may have unique specifications that must be followed to ensure reliability and compliance with safety regulations. Adhering to the manufacturer’s guidelines also safeguards warranties and ensures that any repairs or maintenance performed maintain the integrity of the appliance.

While the other options reference important considerations for safety, they do not specifically address the critical need for following the manufacturer's detailed wiring diagrams, which are essential for the safe operation of automatic gas control systems.