I am to install some fire detection in a cafe. It will be a domestic type system to Grade D1. It is a two story detached rectangular building, 9m x 5.6m, with an open staircase to the first floor. The kitchen takes up approximately half of the ground floor space. As the whole building is affectively the escape route, smoke detectors are required on both floors. Is it worth installing a heat detector in the kitchen area? Would it provide earlier detection of a fire than the smoke detector? Normally a smoke detector would be placed centrally in the space, this would put it at the divide between the kitchen and seating areas(there is no significant dividing wall). I am a bit concerned about false alarms due to smoke from cooking and humidity. Is it worth placing the smoke detector further away from the kitchen area with a heat detector in the kitchen area?
