Highridge Family Center Air Handling Units Replacement

The Work consists of: replacing eight (8) Air Handling Units. To remove and replace eight (8) air handling units (AHUs) per the project requirements provided below and in accordance with preapproved installation schedule: a. Remove the eight (8) existing Trane Air Handlers Units (AHUs) and replace with project specific Palm Beach County approved equal, using the specifications provided in Exhibits 2A and 2B. Refer to section 6 Equipment Manufacturers. Each AHU is to be removed, Page 2 of 5 replaced with new unit and put in operation per approved sequence prior to moving to next AHU. b. Upgrade the current pneumatic accessories and controls in the mechanical rooms to digital controls. Any upgrades have to be compatible with existing Trane system. See Exhibits 1-7. c. Provide new chilled water valves on return side. d. Provide new return, supply and fresh air dampers and actuators. e. Replace all fresh air ductwork within the mechanical room like for like. Add fresh air intake filter fixture capable of regular replacement of filters to prevent outside debris into the building. f. Replace supply plenums within Mechanical room with doubled wall duct. g. Replace or provide and install new thermometers and pressure gauges on supply and return chilled water lines for each air handler. h. Reuse equipment identification tags (i. e. AHU6 / AHU7, etc.) or replace with new and relabel all water lines, ductwork, accessories, etc. consistent with existing identification, where necessitated by replacement (i.e. chilled water / return water, etc.). i. Provide and install a new existing identification, where necessitated by replacement (i.e. chilled water / return water, etc.). Include directional flow arrows. j. Provide a single wall-mounted VFD with motor overload protection capable of servicing multiple fans as identified in AHU specs. See Exhibit 2. k. Trane Control System: Upgrade existing Trane Tracer BCU to new Tracer SC+. Tie in and configure existing Chiller plant controller and Chillers into new Tracer SC+. Disconnect existing sensors and actuators wiring from the AHU and protect the existing wiring during the AHU demolition. Upon installation of new AHU, reconnect sensors and actuators wiring on to new AHU. Tie in and configure new AHU controllers into new Tracer system. See Exhibit 8 for Control System detailed scope of work. l. Ensure all drain lines are flushed, pressurized, unblocked, cleared and fully operational. m. All penetrations, joints, taps, splices, re-insulation, re-connections shall be sealed and patched to meet code requirements. n. Document system pressure test and balanced, recalibrated before running load amps, and provide County the test and balance report by third- party licensed HVAC contractor. o. The contractor will provide "As-Built" documents including drawings and equipment specification, manufactures warrantees, and building permit certificate of completion. p. System shall be started after installation is complete, and tested & balanced for proper operation with County Project Manager (PM) present. The testing and balanced report shall be performed by a 3rd party inspection & licensed company. q. Provide all necessary piping, electrical, control wiring to make the system fully operational per manufacture specifications. The contractor is required to upgrade the existing Trane BAS to correspond with the new AHU equipment, with back net wiring capability and meet present monitoring standards of the County to be viewed remotely. Contractor shall coordinate with BAS supplier for getting existing systems disconnected and reconnected. The existing BAS is serviced and supplied by Trane. As reference all bidders should reach out to Corey Balko, Trane Account Manager to coordinate and obtain any further upgrade information. r. All new air handlers to be engineered & Fit with Merv # 13 air filters at substantial completion. PBC-FMD shall be provided 6-months supply of Merv filters.