Meeting Part L

The quick start guide!

Xpelair Xcell 270

Electric heating continues to grow in popularity. In April 2006 the

revision to Part L of the Building Regulations meant the way you comply

for new buildings changed. This is the quick-start guide to complying

with Part L.

 

What changed?

Block Assessment

All the old methods of compliance have been abolished and

Part L 2006 has important rules for setting and achieving the

replaced with a Target Carbon Emission Rate (TER).

targets in flats and apartments. So called ‘Block Assessment’

Whatever fuel type you choose for the heating and hot water of

allows for all the flats or apartments in a building to be assessed

in one go.

your new building - gas, oil, LPG or electric - you have to show

 

that the overall carbon emission rate is less than the target for that

Each flat or apartment can be dealt with as the developer or

building type.

 

specifier feels appropriate for meeting the overall TER, across the

There are also new minimum standards for U-values and air-

different floors and sides of the building. Any given flat or

apartment does not have to meet an individual TER as long as the

tightness, which must be tested on completion of the building.

whole building does.

However, even meeting all the minimum standards will not

 

guarantee a pass.

 

This allows the developer or specifier flexibility in how to achieve

The biggest change is that under the new rules the whole building

the target. For example, mechanical ventilation with heat recovery

(see picture above) may be installed which would create carbon

is taken into consideration. Every factor that can influence carbon

savings which can be shared out across the whole building.

emissions is relevant and it’s the whole building that must pass.

It also reduces running costs and becomes a major selling

So just building to minimum standards may not guarantee a pass

feature. For more advice on saving energy see the guide at the

because the whole building may still exceed the target

back of this brochure.

carbon emission rate.

 

 

 

What’s my target?

 

Can you comply using electric heating and hot water?

 

 

The target is set in terms of Kilograms of carbon dioxide for every

Yes.

 

square metre of the building, over the course of a year

The only test for compliance is that the building does not exceed

(KgCO /m2/yr).

 

the target carbon emission rate. We continue to supply electric

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heating and hot water solutions into fully compliant buildings.

A range of sample buildings is used to set the target, which is

Electric heating has also been shown to have lower lifetime costs

then adjusted for the size and shape of the actual design and the

of ownership than gas, is easier and quicker to install,

heating and hot water plan.

is maintenance free, offers great design flexibility and has lower

 

 

The complex calculation of both the target and the actual score of

initial capital costs.

your new building can be performed within special SAP 2005

Electric heating is the fuel of the future. Low carbon electricity

approved software. (The government’s adopted Standard

from UK sources produces low carbon heating only with

Assessment Procedure). An accredited SAP assessor is required

electric products.

to complete this.

 

 

 

The targets created under Part L 2006 demand a 20% reduction

How do I reduce the carbon emission rate of a building?

in carbon emissions compared with the previous rules. This new

 

tougher target was set to improve the country’s energy efficiency

There are a number approaches that are proving most effective at

and dependence on imported fuel and to reduce the devastating

reducing the carbon emission rate of a building. We recommend

effects of climate change.

you consider the following options. In isolation or in combination,

The tougher target applies to all relevant buildings, all products

all of these options have been used in conjunction with modern

electric heating.

and all fuel types. It’s the whole building that must comply, not any

 

given product or building service.

 

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Creda Heating Solution manual Quick start guide, Xpelair Xcell, What changed? Block Assessment

Heating Solution specifications

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