In a gas system, how should the existing piping be assessed before adding appliances?

Assessing existing piping for adequate capacity is crucial before adding new appliances to a gas system. This evaluation ensures that the current piping can handle the additional gas load created by the new appliances without causing pressure drops or insufficient flow, which can lead to operational inefficiencies or safety hazards.

Adequate capacity involves checking the diameter of the pipes and the overall design of the gas distribution system. The capacity must be sufficient to support the combined BTU demands of all appliances connected to the system. If the capacity is insufficient, it could lead to inadequate gas supply to new or existing appliances, potentially causing them to malfunction or pose safety risks.

While factors like age and wear, proper alignment, and corrosion are also important considerations in the context of safety and functionality, the direct impact of inadequate capacity on the performance of gas appliances makes it the priority when preparing to add new equipment to the system. Ensuring the right capacity helps maintain proper operation and compliance with safety codes, fostering a safe environment for users.