BS EN 1886:2007 Ventilation for buildings. Air handling units. Mechanical performance
BS EN 1886:2007 specifies test methods, test requirements and classifications for air handling units. It specifically covers those which supply and/or extract air via a ductwork, ventilating/conditioning a part or the whole of the building.
BS EN 1886:2007 is not applicable to the following:
a) air conditioning units serving a limited area in a building, such as fan coil units;
b) units for residential buildings;
c) units producing ventilation air mainly for a manufacturing process.
Except for the thermal and acoustic performance of the casing, the test methods and requirements are applicable to both complete units and any separate sections.
Contents of BS EN 1886:2007
Foreword
Introduction
Scope
Normative references
Terms and definitions
Usage of real units and/or model boxes for the verification of mechanical performances
Mechanical strength of casing
Requirements and classification
Testing
Casing air leakage
Requirements and classification
Units operating under negative pressure only
Units operating under both negative and positive pressure
Testing
Test apparatus
Preparation for test
Test procedure
Determination of allowable leakage rates
Filter bypass leakage
Requirements
General
Acceptable filter bypass leakage rates
Two or more filter sections in the same unit
Testing
General
Filters downstream of the fan (positive pressure)
Filters upstream of the fan (negative pressure)
Thermal performance of casing
General
Requirements and classification
Thermal transmittance
Thermal bridging
Testing
General
Test facility
Testing procedure
Evaluation of the test results
Acoustic insulation of casing
General
Test requirements
Test method
Test procedure
Evaluation of the sound insertion loss Dp
Fire protection
General
Material
Sealings for air handling units
Locally limited and small construction parts of air handling units
Air heaters
Filters, contact humidifiers and droplet eliminators of AHU's
Heat recovery
Mechanical safety
Arrangement and requirements for circulating fans
Bibliography
Test
