True or False: Equipment shutoff valves located in the firebox of a fireplace shall be installed in accordance with the appliance manufacturer's instructions.

The statement is true because the installation of equipment shutoff valves in the firebox of a fireplace must adhere to the specific requirements set forth by the appliance manufacturer. These guidelines are established to ensure safety, efficiency, and proper functionality of the fireplace system.

According to codes and standards, equipment shutoff valves are critical for effectively controlling gas flow to the appliance and must be installed in a manner that complies with the manufacturer's specifications. Failure to follow these instructions could lead to unsafe conditions, including gas leaks or malfunctioning of the appliance.

In the context of appliance safety, following manufacturer instructions is crucial. These guidelines not only help in maintaining the warranty of the appliance but also ensure compliance with local building and safety codes.