FAX Maintenance Building HVAC Equipment and Roof Replacement

    June 16, 2025
    Related To:
    68507564922a763b608429a5 Fax 2025

    The scope of work includes replacement of the rooftop HVAC equipment and roof replacement. to the Fresno FAX HVAC Bus Maintenance Facility.

    Mechanical scope of the work includes:

    1.         Replace the makeup air units (MAUs) on the roof. The ductwork associated with the MAUs will be partially demolished and reconstructed. Provide units with the new curbs.

    2.         Replace the roof mounted heating and ventilation units (HVs). The ductwork associated with the HVs will be partially demolished and reconstructed. Provide units with the new curbs.

    3.         Replace the roof mounted packaged air handling unit (AC)

    4.         Replace the associated thermostats for MAUs, HVs and AC.

    5.         Provide bid alternate for the new building management system.

    6.         Replace the roof-mounted exhaust fans. Field verify the existing curbs. Install a new curb or curb adapter on the existing for the new fans.

    7.         Disable the CNG detection system and remove existing CNG exhaust fans. Seal the roof openings.

    8.         Provide temporary HVAC equipment during the construction to maintain the facility in operation continuously.

    9.         Testing and balancing the HVAC system.

     Electrical scope of work includes:

    10.       The existing electrical panels and conduits to remain in place unless otherwise noted.

    11.       Contractor shall remove the existing circuit breakers, conductors feeding the equipment in scope of work such as air compressors, air-conditioning units, exhaust fans, exhaust CNG fans, make-up air units, heating ventilation units and supply fans. existing conduits to remain in place unless otherwise noted.

    12.       Contractor shall install new circuit breakers and conductors to serve the equipment in scope of work such as air compressors, air-conditioning units, exhaust fans, make-up air units, heating ventilation units and supply fans. existing conduits to remain in place unless otherwise noted.

    13.       Contractor shall remove the existing disconnecting switches and mechanical switches as applicable on the equipment in scope of work such as air compressors, air-conditioning units, exhaust fans, exhaust CNG fans, make-up air units, heating ventilation units and supply fans. existing conduits to remain in place unless otherwise noted.

    14.       Contractor shall provide power connection to new fusible disconnecting switches and mechanical switches as applicable on the equipment in scope of work such as air compressors, air-conditioning units, exhaust fans, make-up air units, heating ventilation units and supply fans. existing conduits shall be extended as needed to serve the proposed equipment.

    15.       Contractor shall remove and disconnect circuit breakers, conduits and conductors feeding the exhaust fans EF-18 and EF29 and heating ventilation unit HV-5 with all other associated accessories shown.

    16.       Contractor shall provide power requirements with new conduit for exhaust fans EF-18 and EF-29, EF-41, EF-42, EF-43 and heating ventilation unit HV-5 only.

    17.       Contractor to provide power requirements to disconnect switches integrated in the respective VFD's to serve exhaust fans EF-32, EF-33 and EF-34.

    18.       Contractor shall provide new duct smoke detectors as shown on mechanical sheet M102. verify exact location in the field prior to installation and tie it back to the existing building fire alarm system.”

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