BS ISO 21927-2:2018
$215.11
Smoke and heat control systems – Specifications for natural smoke and heat exhaust ventilators
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 72 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 12 | 4 Symbols and abbreviated terms |
| 13 | 5 Requirements 5.1 Nominal activation conditions/sensitivity 5.1.1 Initiation device |
| 14 | 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 |
| 15 | 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 |
| 16 | 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 |
| 17 | 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 |
| 18 | 7 Marking, labelling and packaging |
| 20 | Annex A (normative) Classification |
| 23 | Annex B (normative) Effectiveness of smoke/hot gas extraction (aerodynamic free area) |
| 46 | Annex C (normative) Test method for operational reliability and response time |
| 48 | Annex D (normative) Test method for opening under load |
| 50 | Annex E (normative) Test method for low ambient temperature |
| 51 | Annex F (normative) Test method for stability under wind load |
| 53 | Annex G (normative) Test method for resistance to heat |
| 64 | Annex H (normative) Mounting and fixing conditions for the SBI or small flame tests |
| 67 | Annex I (normative) Handling changes affecting declared performances for NSHEV |
| 70 | Annex J (informative) Installation and maintenance information |
| 71 | Bibliography |
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BS ISO 21927-2:2018 – TC:2020 Edition
Tracked Changes. Smoke and heat control systems – Specifications for natural smoke and heat exhaust…
