Sections

Section 23 70 00

Update air handler requirements regarding efficiency, system reliability, redundancy, identification, fan arrangement considerations, proper mixing, bearings, dampers, and referencing the sequence of operations.

Original Revision Request

Section was updated primarily for the following reasons:

  1. To develop and document General Owner Requirements in order to define basic design intent and selection criteria.
    1. Goal – to provide guidelines to promote and achieve Efficiency and Reliability
    2. Note the following special points:
      1. Select units with reduced maximum face velocity to minimize internal component pressure drops.
      2. Coordinate with Space Planning requirements.  Preference for central air handling equipment to be located indoors.
      3. Identification.
      4. Scheduling minimum fan efficiencies.
      5. Special bearing requirements.
      6. Evaluate blow-through vs. draw thru fan configurations for optimal overall net efficiency.
      7. Performance requirements for proper mixing.
  2. To update the Equipment Requirements for the technical details of central Air Handling Units.
    1. Goal – to improve specifications in order to achieve better performance and controls.