Property Default Source
The following commands indicate and control the default properties for the new duct run. If you click a command that is active, the software uses the default properties of that system or duct run.
Default Values for Ducting System
Uses the default properties set on the parent ducting system.
Default Values for Duct run
Uses the default properties from an existing duct run.
Last Used Values
Uses the last saved System and Specification for the duct run.
General Properties
Category
Specifies the general group of properties to display.
Property
Identifies various properties that you must define when you start to route a new duct run.
Value
Specifies the value for the property.
System
Displays or defines the system for the duct run. The last system that you selected is the default. Click More to display all defined systems. You can create a new system in the Systems and Specifications task.
Name
Displays or defines the name of the duct run that you are creating. The name is based on the Name Rule selection. If you want to type a new name for the run, in the Name Rule box, select User Defined, and then type a name for the run in the Name box.
Name Rule
Specify the naming rule that you want to use to name this run. You can select one of the listed rules or select User Defined to specify the run name yourself in the Name box.
Specification
Displays or defines the specification for the duct run. Specifications are assigned to systems in the Systems and Specifications task. Only those specifications that are allowed in the system that you selected appear. You define specifications in the reference data.
See the HVAC Reference Data Guide for more information on defining specifications.
Max. Recommended Velocity
Specifies the maximum recommended velocity for the duct run.
Max. Recommended Pressure Loss
Specifies the maximum recommended pressure loss for the duct run.
Material
Defines the material for the duct run.
Thickness
Defines the thickness of the duct run material.
Insulation Material
Specifies the material of the insulation.
Piping
If you selected Not Insulated in the Insulation Specification box, you cannot change the value in the Insulation Material box. However, if you manually entered the insulation specification, you must provide a corresponding insulation material as per the specification. If you selected an insulation specification from the available list, the software automatically displays the corresponding material as per the specification.
HVAC
If you select Not Insulated, you cannot change the information in Insulation Thickness.
Select More to select an insulation material from the Catalog. To change the options on the list, edit the Insulation Material select list in Catalog. See Select Insulation Material Dialog.
Insulation Thickness
Specifies the thickness of the insulation.
Piping
If you selected Not Insulated in the Insulation Specification box, you cannot change the value in the Insulation Thickness box. However, if you manually entered the insulation specification, you must provide a corresponding insulation thickness value as per the specification. If you selected an insulation specification from the available list, the software automatically displays the corresponding thickness value as per the specification.
HVAC
If you selected Not Insulated in the Insulation Material box, this property is unavailable.
Flow Direction
Specifies the flow direction for the duct run. The flow directional indicators are listed below:
Bi-directional
Upstream
Downstream
No flow
Undefined