Which combination of fixtures must be equipped with an air break?

An air break is a device used in plumbing that prevents the backflow of contaminated water into a potable water supply. It is critical in food service establishments to ensure that any potential contaminants do not flow back into the clean water supply.

The correct combination that must be equipped with an air break includes pot wash and culinary sinks. This is because these types of sinks are often used for washing dirty pots, pans, and culinary equipment, which can have food particles and other contaminants. By requiring an air break, the system ensures that any wastewater that might backflow from these sinks does not contaminate the drinking water supply.

In contrast, other sink combinations such as hand sinks and dishwashers may have different requirements or might not be directly connected to the water supply in a way that necessitates an air break. Hand sinks are primarily used for handwashing and following strict hygiene practices, while dishwashers have built-in mechanisms to prevent backflow. Ice machines and drink dispensers typically include separate considerations for food safety that do not necessitate an air break in the same way.