What is the maximum horizontal length of a single corner wall connector expressed as a percentage of the height of the chimney?

The maximum horizontal length of a single corner wall connector as expressed as a percentage of the chimney height is established by industry codes and standards to ensure proper venting efficiency and minimize the risk of backdrafting.

When a chimney is installed, its height plays a crucial role in maintaining adequate draft. The effectiveness of a venting system relies on the ability of combustion gases to rise and be expelled effectively. By limiting the horizontal run of the connector to a certain percentage of the chimney height, the design ensures that the gases maintain sufficient velocity and do not cool too quickly, which could result in condensation or incomplete combustion.

A maximum of 75% allows for a balance between practical installation considerations, such as avoiding excessively long runs that can hinder performance, while still providing flexibility to accommodate various layouts. This limit reduces the risk of venting issues and ensures that appliances operate safely and efficiently.

Adhering to this guideline helps HVAC technicians design systems that are both functional and compliant with relevant codes.