Response times
BAS-APG001-EN
29
Response times
Response times are a pre-installation consideration. For a discussion of
response time requirements for smoke control systems, refer to NFPA
92A (NFPA 2000,
Recommended Practice for Smoke Control Systems
),
section 3.4.3.3 and NFPA 92B (NFPA 2000,
Guide for Smoke Management
Systems in Malls, Atria, and Large Areas
), section 4.4.4. The activation
sequence should be accomplished so as to avoid damage to the equipment.
For example, the dampers should be opened before starting the fans.
Table 7 shows the required response times, as published in the referenced
NFPA documentation.
Table 7. NFPA response time requirements
Cable distance considerations
Table 8 on page 30 given cabling distance requirements for data of two
different types:
•
Hardware based, such as from analog or binary inputs and outputs
•
Communication based, such as from the Lontalk communication link
or I/O bus (EX2)
The table also presents different cabling distance requirements
depending on whether the data path is monitored or unmonitored.
There are no stated distance limitations for monitored information paths.
The maximum distance allowed is the same as the manufacturer’s stated
maximum distance for that particular data type. A data path is
considered monitored if some notification for opens, ground-shorts, and
conductor shorts is available and used (NFPA 72A [2002] section 4.4.7.1).
Component
Response time
Damper operation to desired state
(open or closed)
75 seconds
Fan operation to desired state
(on or off)
60 seconds
Note:
Some building codes such as the Uniform Building Code have
much more stringent response times. As with all of the
considerations discussed in this chapter, the local authority
having jurisdiction (AHJ) has the final word.
Содержание Engineered Smoke Control System
Страница 1: ...BAS APG001 EN Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...
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Страница 3: ...BAS APG001 EN September 2006 Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...
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Страница 12: ...Contents vi BAS APG001 EN ...
Страница 30: ...Chapter 1 Smoke control overview 18 BAS APG001 EN ...
Страница 48: ...Chapter 3 Installation diagrams 36 BAS APG001 EN Figure 14 Tracer MP581 to FSCS wiring ...
Страница 50: ...Chapter 3 Installation diagrams 38 BAS APG001 EN Figure 15 Tracer MP581 to FACP wiring ...
Страница 57: ...Wiring high voltage ac power BAS APG001 EN 45 Figure 19 AC wiring ...
Страница 59: ...EMI RFI considerations BAS APG001 EN 47 Figure 20 Checking the earth ground ...
Страница 75: ...EMI RFI considerations BAS APG001 EN 63 Figure 31 Checking the earth ground ...
Страница 96: ...Chapter 5 Installing the Tracer MP581 programmable controller 84 BAS APG001 EN ...
Страница 104: ...Chapter 6 Installing the EX2 expansion module 92 BAS APG001 EN Figure 49 I O bus wiring example 2 ...
Страница 110: ...Chapter 6 Installing the EX2 expansion module 98 BAS APG001 EN ...
Страница 123: ...End process verification BAS APG001 EN 111 Figure 61 ast actuator fail checkb 3 13 06 ...
Страница 132: ...Chapter 7 Programming 120 BAS APG001 EN ...
Страница 151: ...Understanding bindings BAS APG001 EN 139 Figure 79 Mixed subnet node and group bindings ...
Страница 152: ...Chapter 8 Network variable bindings 140 BAS APG001 EN ...
Страница 154: ...Appendix A References 142 BAS APG001 EN ...
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