According to ANSI Z21.11.2a, what is the maximum output for solid fuel appliances in confined spaces?

The maximum output for solid fuel appliances in confined spaces is defined by ANSI Z21.11.2a to ensure safe operation and adequate ventilation. The standard establishes a limit of 40,000 BTU/hr for these appliances. This specification is crucial because it helps prevent the buildup of harmful byproducts from combustion in areas where airflow may be restricted, thereby reducing the risk of a hazardous environment. By adhering to this output limit, manufacturers and installers can ensure that the appliances operate safely within confined spaces, protecting the health and safety of occupants.