HVAC Upgrades Atlantic County Government Complex

The work shall include all Heating, Ventilating and Air Conditioning (HVAC) work and incidental electrical construction as shown on the Contract Drawings and as mentioned in this Division of the Specifications. B. Work includes, but is not limited to, the following: 1. Removal of (2) existing rooftop air handling units currently serving the 1st and 2nd floor court rooms and surrounding areas. All associated variable air volume (VAV) boxes, supply and return ductwork shall be removed as indicated on the drawings. Rooftop units’ existing chilled water supply and return piping shall be removed back to the main in the basement. Roofing surrounding the units shall be removed and replaced as well. Electrical supply to existing VAV and rooftop units shall be removed back to point of origin and labeled as spare. Removed units’ controls shall be demolished and removed. 2. Installation of (2) new rooftop packaged ERV (energy recovery ventilator) units shall be installed at same location of previously removed rooftop units and coordinated with existing structure. Existing roofing and structure shall be modified as required to accommodate the installation of the new units. New electrical feeds, controls, supply, and exhaust ductwork shall be provided for new units per plans. ERV units to provide 100% fresh air and exhaust to spaces as indicated on plans with “neutral” air temperature and humidity. Work includes new unit controllers shall be integrated into existing facility’s control system. 3. New fresh air supply and exhaust ductwork connected to new ERV units shall be installed and connected to ceiling and wall mounted grilles and properly balanced. 4. New 4-pipe blower coils units and fan coil units shall be installed as indicated on plans. New blower coil and fan coil units shall be provided all necessary control valves, wall mounted thermostat/temp sensor and control equipment, etc., required for a complete installation. All new fan coil and blower coil units’ chilled water, hot water and condensate piping shall be routed and insulated as shown on plans. Existing chilled water and hot water pumping systems remain and shall be rebalanced for new flows as required. Primary chilled and heating hot water connection points are located in basement and shall have new shut-off valves installed at each new connection to existing piping.

Division 23 -

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