The drain line of a convection steamer must be piped to what type of drain?

The drain line of a convection steamer must be piped to an open floor drain due to the need for proper drainage and sanitation. Open floor drains are designed to handle larger volumes of water and allow for unrestricted flow, which is essential when dealing with the excess moisture and waste produced by steamers. Since the moisture and the potential for contaminants can be significant, having an open drain helps to prevent any backups or blockages that could occur with more restrictive drainage systems.

Additionally, open floor drains typically have appropriate trap systems to catch debris while allowing steam condensate to flow freely away, thus maintaining a hygienic work environment in a commercial kitchen. It's important for the drain system to adhere to local plumbing codes and regulations to ensure safety and compliance, making an open floor drain the most appropriate choice for a convection steamer.