3.4.2. “General data” tab<br>

### 3.4.2. “General data” tab

The “General data” tab provides in the upper part of the window general data pertaining to the entire project. These include:

- “Default supply temp.” (in ºC) – specified temperature of medium supplied to the system. The default value is assigned to all new sources. Supply temperature of floor heating is specified separately.

- “Default temp. drop” (in K) – temperature difference between the supply and return side. The default value is assigned to all new sources. The value of Dt/Dq for floor heating is specified separately.

- “Default rad. share in 1-pipe system” – share of flow in radiator in the overall flow in a single-pipe system – set by default for new radiators, where it can be changed individually.

- “Symbol set” – choose the set of symbols to be used in the project. Depending on the option selected, display of all symbols is enabled.

- “te/qe” (in ºC) – temperature outside. Upon selecting a weather station, appropriate value is assigned

- “Default ti/qi” (in ºC) – temperature inside the rooms adopted by default in the project.

- “Weather station” – for selecting a weather station from a drop-down list box displayed after loading catalogues of climatic data of given country.

- “Qsur/Fsur” (in W/m2) – value of Q/F index, which enables automatic determination of heat loss based on surface area of a room. You can specify a value and save it under a name. When “0” is entered, then heat loss in rooms will be determined by Instal-heat&energy or specified by the user.

Checking the “Create virtual connections” box enables maximum automation of fast design. Calculations can be done without creating a complete layout of the system. By default this box is checked.

! In a floor heating system it is sufficient just to define heating zones and insert a manifold in the drawing – when virtual connections are made, approximate lengths of pipe feeds between the manifold and the individual heating zones are adopted for calculations. The distance between the manifold and the heat source is also approximated.

The “Catalogues” button opens a “Catalogues” window, where catalogues available in the program can be assigned to the project. If no catalogues are assigned to the project file, then you will not be able to specify default types and an error message will be displayed during diagnostic run before calculations.

The lower part of the tab provides general data of the current worksheet:

- “Default ambient temp. for system pipe-runs” (in ºC).

- “Default ambient temp. for riser pipe-runs” (in ºC).

- “Default ambient temp. for radiator circuit pipes” (in ºC).

These values are assigned to new pipe-runs, depending on their location.