Xtrails VESDA-E VEP-A00 - Managing the Exhaust Air

VESDA-EVEP-A00-P Product Guide
16 www.xtralis.com
Note: DO NOT glue the inlet pipes to the pipe inlet manifold.
When configuring the detector ensure that the correct pipes in use are selected as indicated in Table3-1.
No. of Pipes Preferred Pipe Inlet Port to use
Pipe 1 Pipe 2 Pipe 3 Pipe 4
VEP-A00-P 1 Inlet 2 or 3 Inlet 2 or 3
2
3 Inlet 1 or 4 Inlet 1 or 4
4
VEP-A00-1P 1
Table3-1: Preferred use of pipe inlet ports
1 2 3 4
Figure3-1: Pipe inlet port numbering
For code-specific information, refer to Codes and Standards Information for Air Sampling Smoke Detection on
page 1.
3.4 Managing the Exhaust Air
Air is expelled from the detector via the exhaust port at the bottom of the unit enclosure.
The air exhaust port is tapered to accommodate standard pipes of OD 25 mm (ID 21 mm) and to provide an
airtight seal. IPS ¾ inch pipes (1.05 inch OD) require an adaptor (VSP-961) as shown in Figure3-2. If required,
connect an outlet pipe to the exhaust manifold. DO NOT glue this pipe to the exhaust manifold as this will void
the warranty.
Figure3-2: Imperial Pipe Adaptor (VSP-961)
Where the detector is located outside the protected area. It may be necessary to return the exhaust air to the
same area. For example, where pressure difference exceeds 50 Pa, or where hazardous substances are
present inside the area. Return air pipes need to be as short as possible to minimise the effect of airflow
impedance in the return air pipe network and modelled in ASPIRE.