FIRST FLOOR PLAN addition , visitor bicycle parking racks are located close to the entrance of both buildings . Visitor bicycle parking is not only intended for couriers , but also for visitors to the offices who would prefer to commute by bicycle .
HVAC - Ventilation Air-conditioning is provided via a central chilled water system , consisting of 2 chillers located on the Lower Parking Level , and 2 closed circuit cooling towers located on the roof of the North Building . The chilled water plant serves both the North and South towers by supplying chilled water to the Fan Coil units located on each floor , as well as the outdoor air handling units and the Atrium air handling units . The cooling towers are supplied with grey water from Century City treated effluent .
The lower basement parking level is mechanical ventilated , with the extraction system doubling up in case of fire . The basement extraction system is installed with variable speed drives and CO sensors to optimise energy usage . The upper basement parking level is naturally ventilated . Outside air is supplied at 150 % of the National Building Regulations requirement , in order to
meet the 5-star Green Star requirements . The air is pre-cooled to 22 ° C and supplied from air handling units located at roof level to individual fan coil units . The outdoor air handling units are CO2 controlled . The ablution facilities located in the ‘ concrete cube ’ are mechanical ventilated .
The North tower also utilises a dedicated BMS system which controls and monitors all mechanical installations , such as the HVAC system , the server room , the grey water system , as well as the lifts .
Discovery Sable Park 599