The design-build contractor shall provide all the necessary engineering material procurement, management, labor, materials, tools, equipment, supplies, services, components, and disposal and comply with the contract's general conditions to successfully complete the replacement of existing HVAC unit scope of work to the satisfaction of the owner. This project is funded by ESSER and must Comply with Davis/bacon wages, and emphasizes energy saving. All replacement units shall meet the minimum efficiency requirements shown in the specifications Procure and install new like -for- like most highly efficient units (SEER's) available, based on Tonnage. Contractor shall ensure All Bipolar Ionization units are removed from old units, reinstalled on new units and are in working condition. Particle testing and assurance are required.
Procure and install new supply fan variable speed drive Proposed/installed unit weight shall not exceed 5% above existing HVAC unit weight
Reuse existing curbs on the roof provide curb adapter if necessary
Install new disconnect switch and conduit to the new units ducting and air distribution Re-use existing ductwork
Test and balance all modified systems
Preform duct leak remediation as required compliance with 2016 title 24 standards and regulations, section 110 (or prevailing title 24) controls Install smoke detector and connect to existing thermostat and /or controls. Only where needed for compatibility, update thermostat commissioning
Commission equipment and controls
Commission outside air economizer consistent with 2016 title 24 code requirements for ventilation (or prevailing title 24).
Document and submit commissioning log for all equipment as outlined in appendix A to the scope of work As needed, install smoke detector and connect to existing fire alarm systems as required *This project has been identified as part of a stimulus package
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