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BS EN 13141-4:2021 – TC

BS EN 13141-4:2021 – TC

$246.62

Tracked Changes. Ventilation for buildings. Performance testing of components/products for residential ventilation – Aerodynamic, electrical power and acoustic performance of unidirectional ventilation units

Published By Publication Date Number of Pages
BSI 2021 106
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This document specifies aerodynamic, acoustic and electrical power performance test methods for unidirectional ventilation units used in residential ventilation systems.

This document is applicable to ventilation units:

  1. installed on a wall or in a window without any duct, A category;

  2. installed in the upstream of a duct, B category;

  3. installed in the downstream of a duct, C category;

  4. installed in a duct, or with duct connection upstream and downstream, D category;

  5. with one or several inlets/outlets;

  6. installed in a system with a heat pump for domestic hot water or water for cooling or heating;

  7. which can be used for supply or exhaust.

This document does not apply to:

  1. fan assisted cowls which are tested according to EN 13141?5 ;

  2. mechanical supply and exhaust units which are tested according to EN 13141?7:2021 or prEN 13141?8:2021 .

PDF Catalog

PDF Pages PDF Title
60 undefined
68 1 Scope
2 Normative references
69 3 Terms and definitions
71 4 Symbols and abbreviations
73 5 Performance testing of aerodynamic characteristics
5.1 External leakages
5.1.1 Test installation
5.1.2 Test procedure
5.1.2.1 General
74 5.1.2.2 Specificity for units with ducted inlet and/or outlet (Category B, C or D)
75 5.1.2.3 Specificity for units with free inlet and outlet (Category A)
5.1.2.4 Result
5.2 Air flow/pressure performance
5.2.1 General
76 5.2.2 Test Installation
5.2.2.1 General
77 5.2.2.2 Specificity for exhaust or supply ventilation units with multi-inlets or multi-outlets
5.2.2.3 Specificity for roof exhaust fans
5.2.3 Test procedure
5.2.3.1 General
78 5.2.3.2 Determination of external static pressure difference
5.2.3.3 Determination of maximum air volume flow and corresponding pressure
79 5.2.3.4 Determination of reference air volume flow and reference pressure
80 5.2.3.5 Measurement of air flow/pressure curves for ducted ventilation units
5.2.3.6 Measurement of air flow for non-ducted ventilation units
81 5.3 Air flow sensitivity
82 5.4 Indoor/outdoor airtightness
6 Energy
6.1 Performance testing of electrical power
6.1.1 Testing method
6.1.2 Electrical power input at reference and maximum air volume flow
6.1.3 Assessment of part load energy efficiency (optional)
6.2 Operable mode
6.3 Standby mode
83 7 Performance testing of acoustic characteristics
7.1 General
85 7.2 Noise radiated through the casing of the unit LWc
7.2.1 General
7.2.2 Test Installation
86 7.2.3 Measurements
87 7.3 Radiated sound power level in the indoor or outdoor space – LWi and LWo
7.3.1 General
7.3.2 Test Installation
7.3.2.1 General
7.3.2.2 Reverberant room method
7.3.2.3 Anechoic or semi-anechoic room method
88 7.3.2.4 Free field method
89 7.3.3 Measurements
7.4 In-duct sound power level of the unit
7.4.1 General
7.4.2 Test Installation
91 7.4.3 Measurements
7.5 Airborne sound insulation
7.5.1 General
7.5.2 Test Installation
92 7.5.3 Measurements
8 Test results
8.1 Test report
8.2 Product specifications
93 8.3 Leakages
8.4 Air flow/pressure curve
8.5 Air flow sensitivity for non-ducted ventilation units
8.6 Indoor/outdoor airtightness for non-ducted ventilation units
8.7 Energy
8.8 Acoustic characteristics
96 Annex A (normative)Connection box(es)
98 Annex B (normative)Evaluation of maximum air volume flow and pressure
99 Annex C (normative)Examples for the evaluation of reference pressure
100 Annex D (informative)Assessment of part load energy efficiency

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BS EN 13141-4:2021 - TC
$246.62