What is the minimum pitch required for connectors rising vertically to a chimney or vent?

The minimum pitch required for connectors rising vertically to a chimney or vent is one-fourth. This specification is important for ensuring proper drainage and preventing the accumulation of condensation within the connector. A one-fourth slope facilitates the efficient flow of any condensate that may form during operation, ensuring that it drains properly into the venting system rather than pooling or backflowing into the appliance.

In HVAC applications, particularly when dealing with venting systems, maintaining the appropriate pitch is essential to avoid potential issues such as exhaust gas backflow, reduced efficiency, or increased risk of system failure. The one-fourth pitch has been established as a standard in the industry, as it balances effective drainage while adhering to safety regulations and operational guidelines.