To build an AHU

To build a new AHU, you must have an AHU Library available in the designated library path.

Air handlers, in their most basic configurations, are made up of components found in the Mechanical discipline datagroup catalogs. Duct, filters, fans, dampers and air modifiers are selected, sized and placed to create a new device model. AHU Builder allows you to configure these 3D elements to build a new device.

An AHU can also be created and appended in the default AHU Library available in the application.

Select (AHU).
The AHU Placement dialog appears.
Select (Edit AHU) tool icon.
The AHU Builder dialog appears.
Click New Library to create new AHU Library where the new AHUs will be stored.
Opens the New AHU Library dialog where you can select the Destination folder of library path and assign a File name to the library.
Click Load Library to pick existing AHU library from the library path.
Opens the Load AHU Library dialog where you can select the Destination folder and select a library available in the path.

Note: The standard AHUs supplied with the application are stored in the Organization destination in library named BentleyAHULibrary.
Click OK to accept the library name in the New/Load AHU Library dialog.
The library file path appears in the AHU Explorer Library tree.
Select the library file node and click Create AHU.
The library node adds a default AHU name (NEWAHU). The Available Modules window lists standard modules available to use to build an AHU.
Edit the AHU Name field in AHU Data to assign a suitable name to the AHU.
The same name gets appended in the library list in AHU Explorer.
Select a module in the Available Modules list that is required to be in the AHU and double click (or simply drag it ) to get it added in the currently active level (AHU Level 1) in the Selected Modules list.
The selected module instance appears in the Selected Modules.
Highlight the newly added module in the Selected Modules list.
The <Module Name> Module displays the default dimensions; if required, the Width / Height / Length values may be edited to redefine new ones.

Depending on the nature of the module discipline, either HVAC Connection Data or Plumbing Connection Data fields are enabled.
Complete the connection data settings by defining the type, location, dimensions and offset values.
Clicking Add completes defining connection data and the Connection# is appended in the Selected Modules list.
(Optional) As required for module, the Accessories setting allows defining it to say, Access Door or Hood etc.
When added, similar to connections, the accessories get appended under current module.
Click Save to save the recent module in the AHU.
Note: At least one connection needs to be assigned to the module before the AHU can be saved.
Repeat the above steps to add more modules in the current Level.
For configuring stacked AHUs, new levels can be added in the current AHU module list. Select right-click > Add New Level menu or click the Add New Level icon to add AHU Level 2.
Repeat similar steps to define Module and Connections in the new level.
Click Save to save the newly created AHU in the given library.
The named AHU can be placed in the drawing just by selecting it. The Place Component settings are handy to set any placement option, as required.

Tip: To place the AHU later, it can be loaded in the AHU List using the AHU Placement and selected for placing.