5.2.4. Window<br>

### 5.2.4. Window

The “Window” component cannot stand alone – it may only be placed on a wall to which it is assigned, and its data is displayed in the lower part of the wall data table. It is taken into account when heat loss calculations are done in Instal-heat&energy – just like in the case of a wall, the window has a partition structure assigned, and the surface area of the window is subtracted from the calculated surface area of the wall in which the window is installed. This component is displayed in Instal-heat&energy tables as the so-called subpartition, i.e. a nested partition (subordinate to parent partition – the wall). This ensures that the net surface area of the parent partition is always updated, without the need to subtract area or U coefficients of these partitions.

Radiators inserted into the project in the AUTO mode are automatically aligned with the middle of the window.

To place a window in a wall, select it from the “Components” toolbar and click on the wall axis at a selected point. You can move the window along the wall or reorient it by dragging to the opposite side of the wall the square with arrow displayed after marking the window.

Button on the “Components” toolbar:

Appearance on screen:

“Window” component data:

Width [m]

Numerical field. Width of the window in metres measured along the wall axis. The default value is taken from data of the building structure. If this value is not specified there, then the width of window inserted into the drawing is 0.8 m.

Thickness [m]

Numerical field. Thickness of the window. Has effect on the location of contraction on the drawing.

Height [m]

Numerical field. Height of the window.

Drawing type

Selection field. Drawing type that determines whether the window is drawn as a single window with or without a frame or a double window. You can make your selection from a list of available types.

Partition structure type

Selection field. Type of partition structure. When heat loss calculations for rooms and specification of partitions is done in Instal-heat&energy, then this is a selection field where you can select a pre-defined partition from a list. If a type has already been assigned to the window in Instal-heat&energy, then its name is automatically displayed in the graphical editor and the appropriate U0 coefficient is displayed in the field below.

U0

Numerical field. Coefficient of heat transfer across partition. When heat loss calculations for rooms and specification of partitions is done in Instal-heat&energy, then this field cannot be modified. It is automatically filled in for the partition type selected from list.