Union County Administration Building HVAC Equipment Replacement

Replacement of one (1) split-type air conditioning system with one (1) sixty-ton (60-T) packaged air conditioning system located outside on existing grade mounted steel dunnage serving administration building space which shall remain operational with only minimal business interruption. The packaged air conditioning system shall consist of modulating direct expansion cooling with compressor and condensing section, modulating hot gas reheat, filtration, variable speed supply and return fans, dual enthalpy economizer and secure web-based, direct digital BACnet controls. The packaged air conditioning system replacement shall include all associated supplemental structural steel, supply and return ductwork, electric power, controls, condensate piping, startup and airflow testing and balancing. Replacement of one (1) one hundred and fifty-ton (150-T) air-cooled chiller located on existing roof mounted steel dunnage serving administration building space which shall remain operational with only minimal business interruption. The air-cooled chiller shall consist of scroll compressors, direct drive condenser fans, shell and tube cooler, microchannel condenser coils, R-410 refrigerant, sound package and secure web-based, direct digital BACnet controls. The air-cooled chiller replacement shall include all associated supplemental structural steel, chilled water supply and return piping and valves, electric power, controls, startup and hydronic testing and balancing. The referenced packaged air conditioning system and air-cooled chiller shall be integrated with the existing Automatic Logic temperature control system including all associated programming and graphics. All controllers, actuators, sensors, relays, transformers, conduit and wire shall be included to achieve the specified sequence of operations for a complete, fully operational control system. Each device shall be provided with functional testing to ensure proper operation.

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Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.