Daikin VRV air conditioning helps revitalise London office building

Daikin
A ‘good’ BREEAM rating and Daikin VRV heat-recovery air conditioning are features of this revitalised office building in central London.
Daikin heat-recovery VRV air conditioning contributes to the ‘good’ BREEAM rating of the comprehensive refurbishment of 25 Victoria Street in Central London, owned by Coal Pension Properties. The revitalised building includes over 4360 m2 of grade A office accommodation. It has high-quality finishes, new raised floors, suspended ceilings and reception areas. The refurbishment comprises eight open-plan office and two basement floors housing services plant, storage rooms and car parking. A total of 15 VRV systems were installed by RS Air Conditioning & Refrigeration for M&E contractor EMCOR. Their cooling capacities range from 40 to 101 kW, with heating from 45 to 113 kW. They supply open-plan and reception areas with conditioned air via 218 ceiling-concealed fan-coil units connected by low-pressure ductwork to a combination of linear perimeter grilles and multi-cone ceiling diffusers. Each fan-coil unit can operate independently and is controlled by a return-air sensor. The fan-coil units are laid out so that each floor, except the ground, can be divided into two self-contained tenant wings. The outdoor units are on the roof. Fresh air for the FCUs, tempered to 16°C where necessary, is supplied from air-handling plant with run-around cooling coils and heater batteries. Each floor is supplied at the rate of 12 l/s/person based on an occupancy of one person per 10 m2. There is an allowance of 25% to cater for increased future tenant demand. The overall VRV installation is monitored and controlled by a Daikin I-manager in the BMS office in the basement.
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