This standard BS EN 722-1:2004 Leisure accommodation vehicles. Liquid fuel heating systems is classified in these ICS categories:
43.100 Passenger cars. Caravans and light trailers
This document specifies safety requirements for installing oil-fired heating systems in caravans and caravan holiday homes. It applies to liquid fuel heating systems using oil fuels as defined in EN 13878. NOTE Safety ventilation requirements for leisure accommodation vehicles are specified in EN 721.