Specifications include, but are not limited to: 1.4 Demolition of Existing HVAC Systems A. AC-1 at HSB shall be disconnected from its respective chilled water piping systems and removed. The chilled water piping, valves, and fittings between isolation valves and connections to the chiller shall be removed. The strainer shall be retained for reuse with the new piping installation. If existing heat trace is in good condition, retain for reuse with new chilled water piping. All chilled water piping modifications shall be made aboveground. All underground chilled water piping shall remain and be reused. B. All equipment, pipe, valves, fittings, etc., which are removed as part of this project shall become the property of the Contractor and shall be removed from the premises. Due allowances shall be made for this material in the bid. C. All DDC control wiring and conduit associated with the chiller shall be disconnected prior to chiller removal. The control wiring shall be pulled back and protected for reconnection with the new chiller. 1.5 New HVAC Systems A. Provide one new rotary scroll type air cooled chiller with 80 ton nominal capacity to serve as AC-1 for the HSB. The new chiller shall be set on the existing concrete pad in the mechanical courtyard. If necessary, extend the concrete pad to accommodate the footprint of the new chiller. Provide new chilled water piping from the existing isolation valves to the respective connections on the new chiller. Provide offsets as needed to match the elevation and locations of the pipe connections on the new chiller. Provide new valves, pete's plugs, thermowells, thermometers, and other fittings as shown on MSK-2. B. Provide new heat trace cable to cover all new sections of the chilled water piping, valves, and fittings. Existing heat trace removed during demolition work may be reused if in good condition. Voltage of the new cables shall match the voltage of the existing cables such that they can be spliced into the existing cables. New heat trace cable shall be Raychem XL-trace, Chromalox, or approved equal. Insulate all new portions of piping to match the existing installation. Any existing insulation and jacketing removed or damaged as part of the chiller replacement scope of work shall be re-insulated to match the existing installation.