When a water heater is installed in a location without a floor drain, to what distance must the discharge from the relief device be piped to the outside?

The distance to which the discharge from a water heater's temperature and pressure relief valve must be piped to the outside is crucial for safety and compliance with plumbing codes. By requiring the discharge to be piped at least 4 inches from the building's exterior, it ensures that any hot water or steam released does not pose a hazard to anyone nearby. This distance also minimizes the risk of causing damage to the building structure or injuries to people who may be in the vicinity of the discharge area.

Water heaters are installed in various locations, and when there is no floor drain, it is especially important to manage any potential discharge effectively. Allowing the discharge to vent at this designated distance helps prevent accidental scalding or other injuries that could occur if the discharge were too close to the wall or ground where people may walk.

In contrast, the incorrect choices represent distances that are either too short or impractical for safety measures, failing to protect against potential hazards adequately. Ensuring a proper discharge distance aligns with best practices for plumbing systems and health standards.