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What is the ErP Directive?

On 26th September 2015 a new Energy related Product (ErP) directive from the EU comes into force

The ErP directive has been designed to help the EU achieve its target to reduce energy use by 20% and increase the share of renewable energies by 20% by 2020.

The purpose of ErP is to improve the efficiency of heating products and systems installed in properties throughout theUK. It will give homeowners a clear label to look out for when choosing new heating products, allowing them to compare a product or a complete system's energy efficiency.

Temperature controls (e.g. room thermostats) are part of the ErP directive as their efficiency is required to be included in the energy labeling for the complete system (referred to as the "package label"). Temperature controls can deliver an increased efficiency when provided as part of a heating system.

Heating products (e.g. boiler) and systems will require to have an energy label, already familiar on other white goods such as A+++ rated dishwashers/washing machines. Manufacturers will only be able to sell compliant products after 26th September 2015.

Low-rated systems (such as those which might be rated in bands F or G) will not be permitted under the new directive.

Manufacturers will be responsible for ensuring their products have compliant energy labelling while installers will be responsible for ensuring the energy labelling is compliant for the complete heating systems.

The installer will need to calculate a system efficiency figure, based on the different components of the system (boiler, controls, renewables, etc), which will then be added to the energy efficiency label to complete the installation.

The label provided by manufacturers of the core heating product (e.g. boiler) will usually have a space that will allow the installer to enter the percentage (%) efficiency of the different components of the system.

The ErP directive states that a product fiche must be provided with the heating product - basically a standard table of information relating to a product.

The ErP directive also states that as part of the fiche included with a heating product should be a sheet allowing a simple calculation to be made (usually by the installer) to calculate the efficiency of the 'package' by adding the value from the temperature controls to the specified efficiency of the heating product (e.g. boiler). The table below gives the classes of temperature controls and the efficiency scores for each are shown below. The % value is then added to the efficiency of the boiler to give the overall system efficiency. 

Class

Type

Value (%)

I

On/off room thermostat

1

II

Weather compensator control, for use with modulating heaters

2

III

Weather compensator control, for use with on/off output heaters

1.5

IV

TPI room thermostat, for use with on/off output heaters

2

V

Modulating room thermostat, for use with modulating heaters

3

VI

Weather compensator and room sensor, for use with modulating heaters

4

VII

Weather compensator and room sensor, for use with on/off output heaters

3.5

VIII

Multi-sensor room temperature control, for use with modulating heaters

5

 

It will still be possible to install products purchased prior 26th September but after this date, boiler manufacturers and installers will have to ensure that the products they use and the systems they commission, meet the minimum requirements within this new Energy related Products directive.

Written by Allan at 00:00

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