6.1.2. Terminal unit with imposed pressure drop<br>

### 6.1.2. Terminal unit with imposed pressure drop

Terminal units with imposed pressure drop are used to describe, for instance, heaters or fan coil units. These components are not selected from catalogues..

Button on the “Central” toolbar:

Appearance on screen (plan / schematic view):

“Terminal unit” component data:

TU symbol

Text field. You can enter a caption that will identify the radiator unambiguously.

In room

Text field. Room where the terminal unit is installed must be selected from list. If heat loss calculations where done in Instal-heat&energy, the room name is automatically entered into the table.

Q/F [W]

Numerical field. Required output of terminal unit.

Comp. flow resist.

Selection field. Type of flow resistance specified for the terminal unit – select from list: pressure drop known / zeta known / Kv known.

Zeta / Kv / Pressure drop

Numerical field. Flow resistance in terminal unit. You can enter the values directly using appropriate brackets: square brackets [] for zeta, round brackets () for Kv, braces {} for pressure drop. After entering a value in appropriate brackets, the component flow resistance is automatically modified.

Water capacity [dm3]

Numerical field. Water capacity.

ti/qi [0C]

Numerical field. Temperature in room where the terminal unit is installed.

Dt/Dq [0C]

Numerical field. Specified temperature drop across the terminal unit. Value in brackets indicates the default value.

H [m]

Numerical field. Elevation of terminal unit. It can be determined automatically (value in brackets) or specified by the user. To revert to automatic determination enter “?”.

Height [m]

Numerical field. Height of terminal unit.

Length [m]

Numerical field. Length of terminal unit.

Drawing type

Selection field. Manner of drawing the component selected from list.

Drawing

Separate drawing of terminal unit. If “Drawing type” is indicated as “Drawing”, then here you can select one of the loaded drawings or add a new one.

Connection type

Selection field. Select connection type from list.

Pipe feed diam.

Selection field. Specify type or diameter of pipe feed for terminal unit.

Component status

Selection field. Select from list the current status of component: existing or under design. Affects only bill of material.

Label type

Selection field. Select from list the type of terminal unit label in drawing. After selecting “Configure”, a component appearance window is opened, where you can create (by copying) and configure the appearance of components in the drawing. After specifying a new label, it is then available in a pull down list in the table.