In the HVAC task, reference data contains the rules and the parts necessary for placement of routing in the duct system. These rules help in selecting the proper part for the application and limiting parts availability based on routing conditions. HVAC provides duct-sizing capability to determine the proper duct sizes. This duct sizing provides a list of duct cross sections and sizes valid for the specification for the specific design criteria. A recommendation is to set preferred components as part of the specification and as the defaults.
The HVAC software uses several standard data tables to produce correct modeling. An administrator can add new rows to these tables or edit existing rows. After adding or editing rows, the administrator must bulk load the information into the Catalog Database for the new information to take effect.
The interfaces for the HVAC and Cableway tasks are very similar. Reference data determines the values that populate the various dialog boxes in both tasks. Compared to Cableway, the values in HVAC deal more with duct components, like nozzles and branches. For example, to create new routes, the reference data for the HVAC task populates the New Duct Run dialog box, while the reference data for the Cableway task populates the Create Cableway dialog box.
The software selects default components based on your input during a session for routing duct. For the proper configuration, the default or preferred components include the duct cross section, duct size, duct material, material thickness or gage, and the end or port connections.