What requirements apply to sediment trap installations?

Sediment traps are an essential component in the installation of gas appliances, particularly water heaters. They are designed to collect and hold sediment or debris that may be present in the fuel gas supply, preventing it from entering the appliance's gas valve and causing potential operational issues or safety hazards.

The correct choice highlights that water heaters specifically require the installation of sediment traps according to NFPA 58 regulations. This is because water heaters, which often utilize gas as a fuel source, are particularly susceptible to problems caused by sediment accumulation. Ensuring that sediment traps are installed properly can help maintain the efficiency and safety of these appliances, reducing the risk of malfunctions.

In contrast, options such as oil burners and electric heaters do not align with the specific requirements for sediment traps in gas installations. While oil burners may have their own maintenance needs and electric heaters may not require sediment traps at all, the focus of NFPA 58 is primarily on gas appliances, making water heaters the correct context for this particular requirement.