air 4d

no less than 50mm for AIR-2D/4D and 100mm for AIR-8D/9D (see Fig. magnum toto 4d 1b) The distance from walls, partitions to the start of the outlet opening of the heater must be no less than 150mm for AIR-2D/4D and 250mm for AIR-8D/9D Provide protection from penetration of foreign objects into intake and output openings, when installing and operating the heater