Managing The Exhaust Air - VESDA -E VES-A00-P Product Manual

VESDA-E VES-A00-P Product Guide
screwdriver in the large slot and twist, or use a small screwdriver in the side slots to lever the plug out.
Insert the pipes into the pipe inlet(s) ensuring a firm fit.
l
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
VES-A00-P 1
2
3
4
For code-specific information, refer to Codes and Standards Information for Air Sampling Smoke Detection on
page iii.
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.
Where the detector is located outside the protected environment, it may be necessary to return the exhaust air
to the same environment. For example, where pressure differences exceed 50 Pa, or where hazardous
substances are present inside the protected environment. Return air pipes need to be as short as possible to
minimize the effect of airflow impedance in the return air pipe network.
16
Table 3-1: Preferred use of pipe inlet ports
Preferred Pipe Inlet Port to use
Pipe 1 Pipe 2
Inlet 2 or 3
Inlet 1 or 4
Figure 3-1: Pipe inlet port numbering
Figure 3-2: Imperial Pipe Adaptor (VSP-961)
Pipe 3
Inlet 2 or 3
1 2 3 4
Pipe 4
Inlet 1 or 4
www.xtralis.com