Hochiki FireNET Vapor VPR-SD1, Руководство по эксплуатации продукта

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FireNET Vapor VPR-SD1 Product Guide Hochiki America Corporation
3.9.1 Open Area Sampling Pipe Network Design
The VPR-SD1 supports a number of pre-engineered pipe network designs.These designs incorporate suction
pressure and transport time considerations.
Caution: The performance of this system is dependent upon the pipe network. Any extensions or modifications
to the designed installation may cause improper operation. The operational effects of such changes
shall be verified. Any changes must be carried out in accordance with the pre-engineered pipe
networks defined in this document.
The pre-engineered designs assume the following constraints:
1. All sampling points are open holes.
2. For branched designs, the pipes should be balanced, be of equal length and have an equal number of sampling
holes along each branch.
The pre-engineered pipe network designs provide:
l
Transport Times: <120 Seconds
l
Suction Pressure: Greater than or equal to 115 Pa
l
Sampling Point Sensitivity: <=3 %/ft (10 %/M)
The information below shows the parameters for pre-engineered designs.
Table 3-1: Pipe Length to Fan Speed
Pipe Length Fan Speed
164 ft (50 m)
(single pipe)
9
82 ft (25 m)
(single pipe)
6
82 ft + 82 ft (25 m + 25 m)
(with tee)
9
Table 3-2: Number of Holes to Diameter
No. Holes Hole Diameter
1 5/16"
2 13/64"
Table 3-3: Sampling Hole Positioning
Hole Type Notes
Endcap Hole (optional) The distance between an endcap hole and the next hole is
less than or equal to 30 feet (10 meters).
Refer to the holes labelled A in Figure 3-7 and Figure 3-8.
Sampling Holes The distance between sampling holes is less than or equal to
30 feet (10 meters).
Refer to the holes labelled B-F in Figure 3-7 and B-C in
Figure 3-8.
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