DESIGN AND SELECTION Sample Clauses

DESIGN AND SELECTION. 3.1 Detectors which are normally used are broadly covered in two categories viz. Heat and Smoke type. Smoke type is again of two type viz. Photo Electric & Ionisation. 3.2 Ionisation and photoelectric detector shall be provided in the areas which are normally free from smoke. Heat detectors shall be provided for the areas like kitchen, battery room etc. which are prone to smoke. 3.3 The area to be protected by ionization and photo electric detector shall be generally in accordance with the Standards lay down below. Additional detectors if any shall be provided as per user’s requirement. (a) Each detector shall cover an area not exceeding 25 sqmtr . In case of air conditioning equipment rooms. (b) Each detector shall cover an area not exceeding 40 sqmtr . In case of non air conditioning equipment technical rooms. (c) Each detector shall cover an area not exceeding 50 sqmtr . In case of rooms having no equipment. (d) Each detector shall cover an area not exceeding 10 sqmtr . When provided above false ceiling or below false flooring or over fully covered cable network. (e) Area separated by beams having depth of minimum 450 mm shall have separate detector irrespective of area. (f) Maximum horizontal distance between centre to centre of heat detector and smoke detector when provided in corridor shall not exceed 10 meters and from any end walls the distance of heat detectors shall not exceed 5 mtrs. (g) Ionisation or photoelectric detector shall be installed above the racks at a distance not exceeding