4.9.4. Local resistance components<br>

### 4.9.4. Local resistance components

Local resistance components in the application can be divided into those which are displayed and those which are not. All displayed local resistance components have their data in separate fields of data table. Local resistance components, which are not displayed, are entered in the “Miscellaneous components” field.

! For each pipe-run you can enter various “miscellaneous components”, which are compatible with the pipe type of the pipe-run. Therefore, to be able to enter local resistance components from a pipe catalogue, first you have to specify the pipe type.

Local resistance components may be entered into the “Miscellaneous components” field by means of letter shortcuts or by selecting from a list. After clicking the button on the right side of the field, a special window appears, where you can specify local resistance components on the marked pipe-run (or pipe-runs, if more than one is marked).

A list of available resistance components is in the left part of the window. The list on the right side includes the selected local resistance components. You can move items from one list to the other using the buttons with arrows placed between the two lists. The number in brackets at the end of component name in the list on the right indicates the number of selected components of that type.

The top of the list of available resistance components includes pipe fittings from the pipe catalogue. Next come the components from local resistance component catalogue that can be installed on any type of pipe. Successive items include components with specified Kv, zeta or pressure drop (in kPa). Macrodefinitions are at the end of the list. The values of Kv, zeta or pressure drop are input in a field below the list of selected components.

! The list of available resistance components includes those macrodefinitions, which are compatible with the selected pipe type.

You can enter local resistance components without opening the window described above. This, however, applies only to those components that have letter shortcuts assigned. For instance, if letter “b” is assigned to a 90º bend, then you can just enter b in the “Miscellaneous components” field to specify one bend, or bbb to specify three bends.

To add a macrodefinition to the list of local resistance components, enter *<number> (e.g. *1). You can also enter components with zeta value specified in square brackets, e.g. [5.2], Kv value in round brackets, e.g. (5.2) or pressure drop in kilopascals in braces, e.g. {1,2}.