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Technical Index - Guide Index -Page 2 - Page 3 - Page 4 - Page 5 - Page 6

Fixed and Rate of Rise Heat Detectors

Situation / Location
Suitable
Detector Type
Comments
Boiler / Plant Room
FIXED HEAT
DETECTORS
58 OR 82
A Fixed Heat is recommended due to the possible rapid changes in room temperatures. Use of 58° C or 82° C depends on normal ambient temperature expected.
Car Parks
RATE OF RISE
Smoke Detectors would be activated by vehicle exhaust fumes.
Kitchen
FIXED HEAT
Due to the heat that can be produced by cooking appliances, the higher temperature detector should be fitted
Loading Bays
RATE OF RISE
Smoke Detectors would be activated by vehicle exhaust fumes.
Furnace / Kiln Rooms
FIXED HEAT
High temperatures can be present which can rapidly change, thus making the Rate of Rise unsuitable.

DO NOT USE POINT HEAT DETECTORS
1 In Computer Rooms as unacceptable losses can be caused by small fires which may not convect the fire product to the detector rapidly in order to operate an alarm and start effective fire fighting.
2 Where ceiling heights exceed the following :

Heat Detectors Rate of Rise - 9.0m
Heat Detectors Fixed Temperature - 7.5m
High Temperature Heat Detectors 90 Degrees C - 6.0m



- 9.0m
- 7.5m
- 6.0m

3 Do not use Rate of Rise Heat Detectors where the temperature can change rapidly
The above information is only guide. When designing a system all matters must be considered ie: room type, contents and your country standards (ie: British and European), to determine the type of detector required.