NP EN 621-2000
染料驱动家用型强制对流空气加热器.其输入净热量不超过300kW.同时其不携带用于传输染料气体或者染料制品的风扇
Domestic gas-fired force convection air heaters for space heating not exceeding a net heat input of 300kW,without a fan to assist transportation of combustion air and/or combustion products