BS EN 14543.
Specification for dedicated liquefied petroleum gas appliances. Parasol patio heaters. Flueless radiant heaters for outdoor or amply ventilated area use Heaters, Gas-powered devices, Liquefied petroleum gas, Flueless heaters, Radiant heaters, External, Ratings, 3rd family gases, Design, Equipment safety, Combustion, Type testing, Marking, Instructions for use,