Pressure test shows air permeability ≤50% of leakage value of current national standards. The calculations should be based on a comparison of the building U values against a notional building model which complies with the U value requirements in ASHRAE Standard 90.1, 2010 or 90.2, 2007.
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The BREEAM Assessor must confirm acceptability with BRE if in doubt.īUILDING SERVICES ENGINEER MUST CONFIRM ITEMS ARE APPROPRIATE FOR THE ASSESSMENTĥ% improvement on the U value requirements in ASHRAE Energy Standard 90.1-2010 (for all buildings except low rise residential buildings) or ASHRAE Energy Standard 90.2-2007 (for low rise residential buildings).ġ0% improvement on the U value requirements in ASHRAE Standard 90.1-2010 or 90.2-2007 (as applicable).ġ5% improvement on the U value requirements in ASHRAE Standard 90.1-2010 or 90.2-2007 (as applicable). Acceptability will be dependent on the nature of the system proposed. Other systems may be acceptable as part of a LZC strategy under this issue but are not inherently considered as LZC technologies. The low and zero carbon technologies as listed in BREEAM issue Ene 04 can be used to demonstrate compliance. Where the building is not heated this credit is not available.Īt least 10% of total electricity or heating/cooling demand is generated on site from low or zero carbon technologiesĪt least 20% of total electricity or heat/cooling demand is generated on site from low or zero carbon technologies The water heating system is design in accordance with the recommendations of ASHRAE Standard 90.1 and the controls specified are in compliance with the guidance for hot water systems. Hot water is supplied via a self-contained system that has an efficiency of ≥ 85% (either central or de-centralised) OR where decentralised gas fired storage heaters are specified that have an efficiency of ≥ 85%
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An information leaflet explaining efficacy in terms of lighting and the benefits of purchasing high efficacy Low Energy Lamps (LELs) must be provided in each dwelling.ħ5% of the fixed internal fittings as a percentage of the total number of fixed light fittings within habitable rooms have been fitted with LELs.ġ00% of the fixed internal fittings as a percentage of the total number of fixed light fittings within habitable rooms have been fitted with LELs.Īll internal space lighting in the communal areas, excluding statutory safety lighting, have fixed fittings fitted with:.In order to award the residential lighting credits: The assessor should note that the benchmark is for individual fittings, not the average lumens per circuit watt. General internal lighting refers to all internal light fittings but excludes those used for emergency purposes. Where at least 80% of general internal luminaires in fixed fittings achieve an efficacy of at least 65 luminaire-lumens/Watt or greater.
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Internal daylit and non-daylit areas have switching controls that take account of absence/occupancy and/or daylighting as recommended by ASHRAE Standard 90.1 and the California Energy Code.Īdequate lighting controls must also be provided to all ancillary areas (as applicable) such as: Table - 65: Ene 01 Energy efficient features checklist You are here: 14 Checklists > Checklist A5 – Ene 01 Energy efficient features Checklist A5 Ene 01 - Energy efficient features