Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Issue 1 Page iii
February 2001
TABLE OF CONTENTS (Continued)
Para Page
5 SYSTEM DESIGN ......................................................................................................................5-1
5.1 Introduction ............................................................................................................................5-1
5.2 Selecting the Correct Detector...............................................................................................5-1
5.2.1 Ultra Detector....................................................................................................................5-1
5.2.2 Standard Detector.............................................................................................................5-2
5.3 Air Sampling Pipe Network Design........................................................................................5-2
5.4 Pipe Network Design Terms and Details...............................................................................5-2
5.5 Air Velocity .............................................................................................................................5-3
5.6 Branch Point ..........................................................................................................................5-3
5.7 Elutriator.................................................................................................................................5-3
5.8 Elbow, Standard 90 degree ...................................................................................................5-3
5.9 Sweep Elbow .........................................................................................................................5-3
5.9.1 Equivalent Feet.................................................................................................................5-4
5.9.2 Extended Sampling Point (ESP).......................................................................................5-4
5.9.3 Sampling Point (SP) .........................................................................................................5-4
5.10 Pipe Segment ........................................................................................................................5-4
5.11 Sampling Hole........................................................................................................................5-4
5.12 System Transport Time..........................................................................................................5-5
5.13 Suction Pressure....................................................................................................................5-7
5.14 Zones of Varying Static Pressure ..........................................................................................5-7
5.15 Distributed Pipe Network Sampling -
Symmetrical and Non-Symmetrical Balanced Systems ........................................................5-7
5.16 Return Air Grill Sampling .......................................................................................................5-7
5.17 Return Air Duct Sampling ......................................................................................................5-7
5.18 Selecting a Sampling Method................................................................................................5-7
5.18.1 Telephone Central Offices................................................................................................5-8
5.18.2 Computer Rooms..............................................................................................................5-8
5.18.3 Clean Rooms ....................................................................................................................5-8
5.18.4 Atriums..............................................................................................................................5-8
5.18.5 Office Areas......................................................................................................................5-8
5.18.6 Warehouse Storage..........................................................................................................5-8
5.19 Computer Balanced System Design using “SNIFF“ Version 3.0 Software............................5-9
5.19.1 Parameters for Computer Balanced Systems ..................................................................5-9
5.20 Using the “SNIFF“ Version 3.0 Software ...............................................................................5-9
5.21 Return Air Duct Detection Design........................................................................................5-10
5.22 Sampling Pipe Requirements ..............................................................................................5-11
5.23 Return Air Grill Sampling Design.........................................................................................5-12
5.24 Installing the Air-Sampling Pipe Network.............................................................................5-13
5.25 Final touches........................................................................................................................5-14
5.25.1 Air-Sampling Pipe Labels ...............................................................................................5-14
5.25.2 Sample Port Labels ........................................................................................................5-14
5.25.3 Sample Point Labels.......................................................................................................5-14
5.25.4 Mini Sample Point Labels ...............................................................................................5-14
6 SYSTEM COMMISSIONING ......................................................................................................6-1
6.1 Introduction ............................................................................................................................6-1
6.2 System Checkout...................................................................................................................6-1
6.3 Monitoring and Testing Systems ...........................................................................................6-1
6.4 Transport-Time Testing..........................................................................................................6-2
6.4.1 Commissioning Sheet.......................................................................................................6-2
6.5 Suction Pressure Testing.......................................................................................................6-2
6.6 Gross Smoke Test .................................................................................................................6-3
6.6.1 Burning Wire Test.............................................................................................................6-3