According to manufacturer recommendations, how should direct vent high-efficiency condensing furnaces be vented?

Direct vent high-efficiency condensing furnaces are designed to operate with specific venting requirements to ensure safety and efficiency. Following the manufacturer’s recommendations for venting is critical because these specifications are based on extensive testing and the furnace's design characteristics. Each manufacturer's guidelines will account for factors like the type of materials to use, the size of the vent pipe, installation angles, and proper termination locations to avoid hazardous conditions.

Adhering to these guidelines helps prevent improper operation, which could lead to increased risks of carbon monoxide buildup, system inefficiencies, or potential damage to the furnace itself. Manufacturer instructions are also formulated to meet safety standards and code compliance, ensuring that the installation aligns with safety measures to protect residents and property.

While local codes are important, they may not encompass the specific nuances that the manufacturer has established based on the unique aspects of their product. It is crucial to prioritize the manufacturer's recommendations over general practices or assumptions related to local codes when venting these furnaces.