CEN/TC 156/WG 17 - Fans

This document specifies the dimensions of the circular and rectangular flanges of general‑purpose fans, as well as the fan size designations. It is not applicable to cross‑flow fans or to fan appliances used for individual household or similar applications.
For circular flanges, it provides for three different flange series: one for light‑duty casing thicknesses, another for medium‑duty fans and the third for heavy‑duty fans as used on sea-going vessels or in heavy industry.
In order not to restrict fan design unduly, only the pitch diameter, hole numbers and hole diameters are specified. Flange thickness, as well as internal and external flange diameters, can be chosen freely within the limits of good engineering practice.

This document defines categories in the field of fans used for all purposes.
It is not applicable to electrical safety.

ISO 5801:2017 specifies procedures for the determination of the performance of fans of all types except those designed solely for air circulation, e.g. ceiling fans and table fans. Testing of jet fans is described in ISO 13350.
ISO 5801:2017 provides estimates of uncertainty of measurement and rules for the conversion, within specified limits, of test results for changes in speed, gas handled and, in the case of model tests, size are given.

ISO 13350:2015 deals with the determination of those technical characteristics needed to describe all aspects of the performance of jet fans as defined in ISO 13349. It does not cover those fans designed for ducted applications, nor those designed solely for air circulation, e.g. ceiling fans and table fans.
The test procedures described in this International Standard relate to laboratory conditions. The measurement of performance under on-site conditions is not included.

2014-09-26: Draft received at ISO/CS for // vote (see ISO notification in dataservice on 2014-09-26).
MINOR Amendment - MINOR Amendment - MINOR Amendment

This European Standard specifies requirements for the mechanical guarding of industrial fans.
The circumstances under which safety measures shall be taken are described and information on how hazards can be reduced or eliminated is given, along with guidance on safety practices and information for use.

This European Standard specifies tests for determining one or more performance characteristics of fans installed in an operational circuit when handling a monophase fluid.

This document provides procedures and methods for measuring and/or calculating the energy efficiency and associated characteristics of fans when driven by electric motors. This document deals with the following fan types;
-   axial fan;
-   centrifugal forward curved fan, centrifugal radial bladed fan;
-   centrifugal backward curved fan without housing, including centrifugal backward aerofoil fans;
-   centrifugal backward curved fan with housing, including centrifugal backward aerofoil fans;
-   mixed flow fan;
-   cross flow fan;
-   jet fan.
It provides procedures and methods to evaluate the compliance of the fan efficiency against minimum efficiency requirements.
This document includes stand-alone fans and fans that are integrated in other products. It gives guidance to manufacturers in providing information to surveillance authorities to describe the full extent of the fan by describing boundaries, significant elements and additional parts.
Some units previously identified as fans are now defined as Uni-Directional Ventilation Units. This document explains and shows by way of examples the difference between fans and Uni-Directional Ventilation Units.
This standard does not include:
-   Uni-Directional Ventilation Units;
-   fans that are designed specifically to operate in toxic, highly corrosive or flammable environments or in environments with abrasive substances, see Annex C.

This document provides procedures and methods for measuring and calculating the energy efficiency and associated characteristics of non-residential unidirectional ventilation units when driven by electric motors.
Unidirectional ventilation units include roof fans and box fans.
This document includes unidirectional ventilation units with and without filters.
Additional air treatment items are considered in this document but are excluded in the determination of the efficiency of the product.
This document does not include:
-   residential unidirectional and bidirectional ventilation units,
-   non-residential bidirectional ventilation units.
NOTE 1   Residential unidirectional ventilation units are under the remit of CEN/TC 156/WG 2.
NOTE 2   Non-residential bidirectional ventilation units are under the remit of CEN/TC 156/WG 5.

This document is applicable to all types of fans other than fans that are household appliances intended for household and similar purposes. The fan can be either a complete machine or a partly completed machine intended to be incorporated into/or assembled with other machinery or other partly completed machinery or equipment.
NOTE   Fans intended for household purposes are typically used on desks, ceilings, free standing or, partitions (e.g. window and wall fans) and ducts not listing here built in components for other household appliances. They are assumed to have mainly electricity related risks. These fans are in the scope of the EN 60335 series. Appliances not intended for normal household use but which nevertheless because of their similar use may be a source of danger to the public, such as appliances intended for use in shops, in light industry and on farms, are within the scope of the EN 60335 series of standards.
This document deals with all significant hazards, hazardous situations and events relevant to fans during transport, assembly and installation, commissioning and use as well as decommissioning as defined in EN ISO 12100:2010, Annex B, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
This document  applies to electrically driven fans and, apart from the hazards related to the drives, it also applies to fans driven from other energy sources.
Further safety measures might be required for the additional hazards due to the application.
This document  does not deal with the hazards due to the use of fans in a potentially explosive atmosphere (see e.g. EN 14986).

This document provides procedures and methods for measuring and/or calculating the energy efficiency and associated characteristics of fans when driven by electric motors. It provides procedures and methods to evaluate the compliance of the fan efficiency against minimum efficiency requirements.
This document includes stand-alone fans and fans that are integrated in other products. It gives guidance to manufacturers in providing information to surveillance authorities to describe the full extent of the fan by describing boundaries, significant elements and additional parts.
Jet fans are included in the Regulation 327/2011. This document covers the requirements for labelling and technical information but provides no reference for the determination of their efficiency. Refer to EN ISO 13350 for determination of that products efficiency.
Some units previously identified as fans are now defined as Uni-Directional Ventilation Units. This document explains and shows by way of examples the difference between fans and Uni-Directional Ventilation Units.
This standard does not include:
-   Uni-Directional Ventilation Units (please refer to EN 17291).

ISO 13351:2009 specifies the dimensions of the circular and rectangular flanges of general‑purpose fans, as well as the fan size designations. It is not applicable to cross‑flow fans or to fan appliances used for individual household or similar applications.

ISO 13349:2010 defines terms and categories in the field of fans used for all purposes.
It is not applicable to electrical safety.

ISO 5801:2007 deals with the determination of the performance of industrial fans of all types except those designed solely for air circulation e.g. ceiling fans and table fans.
Estimates of uncertainty of measurement are provided and rules for the conversion, within specified limits, of test results for changes in speed, gas handled and, in the case of model tests, size, are given.

This International Standard deals with the determination of those technical characteristics needed to describe all aspects
of the performance of jet fans as defined in ISO 13349. It does not cover those fans designed for ducted applications, nor
those designed solely for air circulation, e.g. ceiling fans and table fans.
The test procedures described in this International Standard relate to laboratory conditions. The measurement of performance under on-site conditions is not included.