ISO 21927-2:2018
Smoke and heat control systems — Part 2: Specifications for natural smoke and heat exhaust ventilators
This document applies to natural smoke and heat exhaust ventilators (NSHEV) operating as part of smoke and heat exhaust systems (SHEVS), placed on the market. This document specifies requirements and gives test methods for natural smoke and heat exhaust ventilators which are intended to be installed in smoke and heat control systems in buildings.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Requirements
5.1 Nominal activation conditions/sensitivity
5.1.1 Initiation device
5.1.2 Opening mechanism
5.1.3 Inputs and outputs
5.2 Response delay (response time)
5.2.1 Reliability
5.2.2 Opening under (snow/wind) load
5.2.3 Low ambient temperature
5.2.4 Opening under heat
5.3 Operational reliability
5.4 Effectiveness of smoke/hot gas extraction (aerodynamic free area)
5.5 Performance parameters under fire conditions
5.5.1 Resistance to heat
5.5.2 Mechanical stability
5.5.3 Reaction to fire
5.6 Performance under environmental conditions
5.6.1 Opening under load
5.6.2 Low ambient temperature
5.6.3 Stability under wind load
5.6.4 Resistance to wind-induced vibration
5.6.5 Resistance to heat
5.7 Durability
5.7.1 Response delay (response time)
5.7.2 Operational reliability
5.7.3 Performance parameters under fire conditions
6 Testing, assessment and sampling methods
7 Marking, labelling and packaging
Annex A (normative) Classification
Annex B (normative) Effectiveness of smoke/hot gas extraction (aerodynamic free area)
Annex C (normative) Test method for operational reliability and response time
Annex D (normative) Test method for opening under load
Annex E (normative) Test method for low ambient temperature
Annex F (normative) Test method for stability under wind load
Annex G (normative) Test method for resistance to heat
Annex H (normative) Mounting and fixing conditions for the SBI or small flame tests
Annex I (normative) Handling changes affecting declared performances for NSHEV
Annex J (informative) Installation and maintenance information
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Requirements
5.1 Nominal activation conditions/sensitivity
5.1.1 Initiation device
5.1.2 Opening mechanism
5.1.3 Inputs and outputs
5.2 Response delay (response time)
5.2.1 Reliability
5.2.2 Opening under (snow/wind) load
5.2.3 Low ambient temperature
5.2.4 Opening under heat
5.3 Operational reliability
5.4 Effectiveness of smoke/hot gas extraction (aerodynamic free area)
5.5 Performance parameters under fire conditions
5.5.1 Resistance to heat
5.5.2 Mechanical stability
5.5.3 Reaction to fire
5.6 Performance under environmental conditions
5.6.1 Opening under load
5.6.2 Low ambient temperature
5.6.3 Stability under wind load
5.6.4 Resistance to wind-induced vibration
5.6.5 Resistance to heat
5.7 Durability
5.7.1 Response delay (response time)
5.7.2 Operational reliability
5.7.3 Performance parameters under fire conditions
6 Testing, assessment and sampling methods
7 Marking, labelling and packaging
Annex A (normative) Classification
Annex B (normative) Effectiveness of smoke/hot gas extraction (aerodynamic free area)
Annex C (normative) Test method for operational reliability and response time
Annex D (normative) Test method for opening under load
Annex E (normative) Test method for low ambient temperature
Annex F (normative) Test method for stability under wind load
Annex G (normative) Test method for resistance to heat
Annex H (normative) Mounting and fixing conditions for the SBI or small flame tests
Annex I (normative) Handling changes affecting declared performances for NSHEV
Annex J (informative) Installation and maintenance information
Bibliography