Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Page 6-4 Issue 1
February 2001
BS6266 Test A4
According to BS6266 the following test is considered unlikely to produce hydrogen chloride vapour. This
test may be undertaken in underfloor spaces or ceiling voids.
NOTE
The wire is subject to cooling if positioned in direct contact with air flows and may need to be
shielded.
Connect a 2 metre length of 10/0.1mm (0.078m
2
) wire with a total radius of 0.3mm including the PVC
insulation to a 6 V AC source of at least 16 Amps rating per wire for a period of 3 minutes. The system
should respond within 120 seconds of cessation of energisation.
NOTE
After this period very little smoke is given off.
BS6266 Test A3
WARNING
THE FOLLOWING TEST IS CONSIDERED IN
BS6266 TO PRODUCE SUFFICIENTLY HIGH
TEMPERATURES TO GENERATE SMALL
QUANTITIES OF HYDROCHLORIC ACID GAS
This test may be undertaken in under floor spaces or ceiling voids where rapid air flow may render Test 1
unsuitable.
Connect a 1 metre length of 10/0.1mm (0.078mm
2
) wire with a total radius of 0.3mm including the PVC
insulation to a 6 V AC source of at least 16 Amps rating per wire for a period of 1 minute. The system
should respond within 120 seconds of cessation of energisation.
NOTE
After this period most of the insulation should be burnt off.