VDOT-ASD-100 Aspiration Detector
Velocity Detection
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VDOT-ASD-100 Aspirating Smoke Detector User’s Manual V1
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Ensure that when the detector is fitted to the wall there is enough space on the
right-hand side to allow the opening of the front panel.
Cable entries are also provided on the side and bottom. It should be noticed that some
cable entries are non-cut through holes, a punch using a screwdriver and hammer or a
proper tool are needed to open the entry holes.
Sampling pipes
Sampling pipes should be made from a non-hazardous material and should be clearly
identified. Typical sampling pipes used in air sampling systems are ABS/uPVC pipes with
25mm OD. The pipes should be marked with air sampling or aspirating smoke detection pipe
to identify its usage. Red pipe is recommended for it is a fire alarm system.
In some cases, high temperature or corrosion is a concern, metal or other materials suitable
materials for that environment can be used.
When drilling holes in the sample pipes, or cutting off lengths of pipe, ensure that all swarf
and debris is removed from the pipe.