Which pipe connects an appliance to a chimney or vent?

The correct answer is the vent connector, which plays a crucial role in connecting an appliance to a chimney or vent system. Vent connectors are specifically designed to transfer combustion gases from the appliance to the vertical venting system that directs these gases safely outside.

These connectors must be installed in a manner that allows for proper alignment, minimizing the risk of gas leakage and ensuring efficient venting of combustion products. The design and materials used in vent connectors are important because they need to withstand the heat and potential corrosive byproducts of combustion.

In comparison, an exhaust pipe generally refers to a broader category that may include different types of pipes used for exhaust purposes, but it doesn't specifically denote the connection to a chimney or vent. A flue pipe can also refer to the passageway within a chimney through which combustion byproducts travel, but it is not the component that connects an appliance directly to a vent system. The term outlet pipe might imply a discharge point for fluids or gases but does not specifically convey the function of connecting appliances to a venting system. Thus, the vent connector is the precise component for the specific task of linking appliances to chimney or vent structures.