What is the minimum distance required from the wall to the boiler according to New York City construction code?

The minimum distance required from the wall to the boiler according to the New York City construction code is indeed 18 inches. This regulation is in place to ensure adequate clearance for maintenance, service access, and to facilitate proper airflow around the boiler. Sufficient spacing is critical to prevent heat accumulation against the wall, which could pose a fire hazard or interfere with the efficient operation of the boiler. Maintaining this distance also helps prevent damage to the structure and ensures compliance with safety codes, which are designed to protect both the equipment and the building's occupants.