| | | Function The LTG Swirl Diffuser type DLA 7 is a highly inductive diffuser which may either be integrated in the ceiling or free suspended, thus offering a wide variety of possibilities and presentation. Advantages Design / Appearance - The diffuser plate is available either powder coated, to RAL reference, or chromium plated. The swirl disc is available in black or white. - All metal construction. Economy / Flexibility - Fast installation as pattern can be factory-set but subsequently modified to suit new room conditions. Comfort - Good comfort in the occupied zone is ensured by rapid decay of velocity and temperature difference of the supply jet. - Direct, efficient, ventilation of occupied zones. Range of products Model sizes: (diffuser plate nominal size) square: 400, 500, 600, 625, 800 mm round: 400, 500, 600, 625, 800 mm Air distribution plenum box galvanized sheet steel Versions: pyramid box rectangular box cylindrical box - with adjustable flow restrictor inside the spigot*, adjustment from below through the diffuser plate. * not possible with the rectangular spigot connection option. Duct connection Side or top entry (the round spigot must be "bayonet" installed by the customer). For small box heights a side entry rectangular connection is available. Diffuser plate Steel galvanized, visible side powder coated to RAL reference or chromium plated. Diffusing components Steel galvanized, painted in black or white | | Flow types The swirl disc can be set for two flow types: the tangential flow 1 and 2, or vertical flow. Tangential flow 1- standard setting - the air jets will attach strongly to the ceiling resulting in a fully mixed turbulent flow structure in the room, with rapid temperature and velocity decay of the jet. | | |
| | | Tangential setting 2, prefered for lower volume flow rates and large cooling differentials. The outlet cross -section is reduced, thus diffusing the air with increased momentum, ensuring that the jet remains powerfully attached to the ceiling. As a result, induction effect is increased. Vertical setting, prefered setting during heating operation. In the case of the vertical flow, the air is projected conocally downwards. Flow development with: tangential setting | | |