F1The definitions set out in the Ecodesign for Energy-Related Products Regulations 2010 apply; and for any term that is not defined in those Regulations, the definitions set out in Directive 2009/125/EC of the European Parliament and of the Council of 21 October 2009 establishing a framework for the setting of ecodesign requirements for energy-related products, as it had effect immediately before IP completion day, apply. The following definitions also apply—

1. 1.

   ‘Fan’ means a rotary bladed machine that is used to maintain a continuous flow of gas, typically air, passing through it and whose work per unit mass does not exceed 25 kJ/kg, and which:

   • is designed for use with or equipped with an electrical motor with an electric input power between 125 W and 500 kW (≥ 125 W and ≤ 500 kW) to drive the impeller at its optimum energy efficiency point,

   • is an axial fan, centrifugal fan, cross flow fan or mixed flow fan,

   • may or may not be equipped with a motor when placed on the market or put into service;

2. 2.

   ‘Impeller’ means the part of the fan that is imparting energy into the gas flow and is also known as the fan wheel;

3. 3.

   ‘Axial fan’ means a fan that propels gas in the direction axial to the rotational axis of one or more impeller(s) with a swirling tangential motion created by the rotating impeller(s). The axial fan may or may not be equipped with a cylindrical housing, inlet or outlet guide vanes or an orifice panel or orifice ring;

4. 4.

   ‘Inlet guide vanes’ are vanes positioned before the impeller to guide the gas stream towards the impeller and which may or may not be adjustable;

5. 5.

   ‘Outlet guide vanes’ are vanes positioned after the impeller to guide the gas stream from the impeller and which may or may not be adjustable;

6. 6.

   ‘Orifice panel’ means a panel with an opening in which the fan sits and which allows the fan to be fixed to other structures;

7. 7.

   ‘Orifice ring’ means a ring with an opening in which the fan sits and which allows the fan to be fixed to other structures;

8. 8.

   ‘Centrifugal fan’ means a fan in which the gas enters the impeller(s) in an essentially axial direction and leaves it in a direction perpendicular to that axis. The impeller may have one or two inlets and may or may not have a housing;

9. 9.

   ‘Centrifugal radial bladed fan’ means a centrifugal fan where the outward direction of the blades of the impeller(s) at the periphery is radial relative to the axis of rotation;

10. 10.

    ‘Centrifugal forward curved fan’ means a centrifugal fan where the outward direction of the blades of the impeller(s) at the periphery is forward relative to the direction of rotation;

11. 11.

    ‘Centrifugal backward curved fan without housing’ means a centrifugal fan where the outward direction of the blades of the impeller(s) at the periphery is backward relative to the direction of rotation and which does not have a housing;

12. 12.

    ‘Housing’ means a casing around the impeller which guides the gas stream towards, through and from the impeller;

13. 13.

    ‘Centrifugal backward curved fan with housing’ means a centrifugal fan with an impeller where the outward direction of the blades at the periphery is backward relative to the direction of rotation and which has a housing;

14. 14.

    ‘Cross flow fan’ means a fan in which the gas path through the impeller is in a direction essentially at right angles to its axis both entering and leaving the impeller at its periphery;

15. 15.

    ‘Mixed flow fan’ means a fan in which the gas path through the impeller is intermediate between the gas path in fans of centrifugal and axial types;

16. 16.

    ‘Short-time duty’ means working of a motor at a constant load, which is not long enough to reach temperature equilibrium;

17. 17.

    ‘Ventilation fan’ means a fan that is not used in the following energy-related products:

    • laundry and washer dryers > 3 kW maximum electrical input power,

    • indoor units of household air-conditioning products and indoor household air-conditioners, ≤ 12 kW maximum airco output power,

    • information technology products;

18. 18.

    The ‘specific ratio’ means the stagnation pressure measured at the fan outlet divided by the stagnation pressure at the fan inlet at the optimal energy efficiency point of the fan.