How should the specifications for clearances around a duct system be determined?

The specifications for clearances around a duct system should be determined primarily by manufacturer specifications. Each manufacturer designs their products with specific guidelines to ensure safe and efficient operation. These specifications take into account factors such as thermal expansion, maintenance access, and airflow requirements that are crucial for the system's performance and longevity.

While industry standards and building codes can provide a framework for general practices, the unique characteristics and requirements of the specific duct system outlined by the manufacturer should be prioritized. Following these detailed guidelines helps prevent potential issues, such as overheating, improper airflow, or system failure, which can arise from inadequate clearances. Additionally, relying solely on client requests, without incorporating the essential manufacturer recommendations, may lead to suboptimal results or compliance issues.