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Daikin UK - Air Conditioning - Sky Air & Split Systems

Sky Air - Split Systems - Air Conditioning - Cooling - HVAC Systems, Daikin UK

Indoor Air Quality (IAQ)

Many people spend up to 90% of their time inside their homes and places of work, learning and entertainment. So, with alarming statistics on the real impact of air pollution in the UK and globally, air quality should be considered a vital component of whole-building climate control.

A holistic approach to HVAC system design is the best way to ensure that indoor environments are both comfortable and healthy. This approach gives air quality the same weighting as temperature, humidity, lighting and energy efficiency. It requires a fine balance between air-tightness for energy efficiency and optimal ventilation for good health – both physical and mental. It also requires effective air filtration and a programme of regular servicing to ensure optimal system performance.

Public Health England says air pollution kills up to 36,000 people a year in the UK – and cost the healthcare sector £20 billion a year. The World Health Organisation describes air pollution as “the single largest environmental risk to health” – and says the annual global death toll is around seven million.

Energy efficiency standards in building design have risen in recent years, with buildings becoming more insulated and airtight. But if, as a result, fresh air circulation is reduced, oxygen levels may fall while potential for allergies, odours and condensation may increase.

Designing HVAC systems for energy efficiency attracts high weightings in BREEAM assessments. But BREEAM also rewards HVAC systems that maintain high indoor air quality by controlling temperature and humidity – and ensuring a pollution-free fresh air supply.

Regularly inspecting and cleaning a building’s ventilation system helps to maintain energy efficiency, as well as helping to ensure the system works correctly and performs at its optimum level. Daikin has always recommended the regular cleaning, inspection and maintenance of HVAC systems, something that is perhaps just as important as the initial specification, design and installation. Regularly inspecting the system’s intake and exhausts for any signs of dirt build-up, pollution or contamination can all help to ensure the system will continue in its role of delivering a clean and healthy indoor environment. The ductwork and indoor units should also be inspected for dust, with particular attention around filters, heating and cooling coils and any change of direction in the ducting.

To assist with maintaining and ensuring optimum performance of the ventilation and wider HVAC system, there are a variety of auto-cleaning ducts and cassettes available. For example, Daikin’s auto-cleaning duct can be fitted to both VRV and Split air conditioning units and works by collecting debris from the HVAC system in a dust box, which can then be easily emptied using a standard vacuum cleaner as part of the building's regular cleaning schedule.

In the UK, ventilation design is controlled by the Building Regulations Approved Document Part F, which sets out the criteria for both homes and ‘non-domestic’ buildings – primarily offices. Building ventilation also has to comply with a number of British Standards, covering energy performance, filters and maintenance.

As part of a wider HVAC system, ventilation must comply with Approved Document Part B (fire safety), Part C (site preparation and resistance to contaminants and moisture), Part E (resistance to the passage of sound), Part L (conservation of fuel and power), Part J (combustion appliances and fuel storage systems) and Part P (electrical safety).

A wide range of ventilation guidance is available, from industry bodies including CIBSE and the Building Research Establishment.

VRV5 S-Series

Daikin’s VRV 5 S-series offers like-for-like R410A flexibility but with the advantage of a substantially reduced CO2 equivalent, thanks to the use of R32 refrigerant and a 10% lower refrigerant charge. Sustainability is assured over the entire lifecycle because of market-leading seasonal efficiency – and as R32 is a single-component refrigerant it is easy to re-use and recycle.

The single-fan 4, 5 and 6hp units in single and three-phase versions are just 869mm in height, and with their 102kg lightweight and compact design they are easy to transport. They are rated at 12.1, 14.0 and 15.5kW (cooling) and 8.4, 9.7 and 10.7kW (heating). All key components are easily accessible.

Depending on their capacity, the outdoor units can support up to 13, 16 or 18 indoor units. Total allowable piping length is 300 metres.

The S-series supports the popular Roundflow cassette with its 360° discharge. The cassettes are available in black and white with standard or designer decoration panels and the optional self-cleaning filters for higher efficiency and lower maintenance costs.

S-series systems may also be specified with Daikin’s fully-flat ceiling cassette, concealed ducted units (with optional self-cleaning duct attachments) and wall mounted units for rooms with no false ceilings.

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Sky Air, Split Systems R32,  HVAC systems Altherma 3 Bluevolution Bluevolution

Daikin UK
The Heights
Brooklands
Weybridge
Surrey
KT13 0NY

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Tel: 01932 879000

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