BLU have Aluminium casing up to Blu 1000.1 and steel casing from 3000.1 with electrical panel integrated on the burner (standard IP40). Version in loosen form or with remote switch cabinet on request (IP54). New high efficiency fan ventilator designed to give flame stability and easy matching. Adjustable combustion head for fine tuning / matching with different shapes of combustion chamber. Easy maintenance of firing head from the burner top cover. Low NOx version available in class 3 < 80mg/kWh and in class 2 < 120mg/kWh as per EN676. Hi - Low version with easy and fast butterfly ratio system available from Blu 500.1 up to Blu 2000.1.