MECHANICAL & ELECTRICAL INSTALLATION TELECOM PROVISION Numerous Telco providers are located close to the proposed development. Telco access to the building will be at basement level and via two diverse locations. ESB A dedicated ESB Sub Station is located at ground floor level with the building main switchroom located adjacent. GAS SERVICES A new incoming gas supply shall be installed by GNI from their existing underground main on North Wall Quay Street. Gas will be made available for potential use by tenants. DISTRICT HEATING SCHEME A connection will be left available within the basement plantroom for future connection to the proposed Covanta District heating scheme. DESIGN HEATING • The heating requirement for the building will be provided by a Multipurpose Unit Compressor Heat Pump) located at roof level. • Low pressure hot water will be pumped to the fan coil units, the AHU heating coils and the core area radiators. • The LPHW pipework shall be distributed through the building in the core. • Space heating shall be provided to the core areas via a steel panel radiator located at ground floor level. • Variable speed low-energy pumps on all circuits. COOLING • Heating and cooling shall be provided to the office space via four pipe fan coil units. • Each fan coil unit will have water side control, via a 2-port valve. Each fan coil unit will be provided with LPHW and chilled water services as described above. • Each fan coil will also have a condensate drain piping system with is also routed through the false ceiling. • Each fan coil unit shall consist of three/four, ducted branches, which shall supply heated/chilled air to the office space, via a plenum box and supply grille with variable speed low-energy pumps on all chilled water circuits. VENTILATION • Fresh air requirement min 12 l/s per person @ 1 person per 8 m². Fresh air is to be supplied to the office from an air handling unit located on the roof. • The AHU will consist of a supply and extract unit complete with a heat recovery section. The supply air unit shall be complete with heating and cooling coil. Attenuation shall be installed on the ductwork. • Heat Recovery in heating and cooling mode, Variable speed driven roof mounted AHUs. BEMS • An intelligent building energy management system with cloud based connectivity will be provided to control and monitor all functions of the HVAC and water systems within the building. The BEMS will interface with the building life safety systems. • A standby generator is provided to give electrical backup to the fire lift and the building life safety systems. LIGHTING Energy Efficient LED lighting throughout, control of the lighting systems will be by means of an intelligent lighting control system which will provide occupancy / presence control and daylight harvesting. DESIGN PARAMETERS: Winter Temperature Outside: -3°C dB saturated Internal Office: 21°C ±2°C. No RH Control Toilets: 19-21°C. No RH Control Reception: 1°C ±2°C. No RH Control THE HEYSHAM / 73 NORTH WALL QUAY, DUBLIN 1 33
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