Quick Start

Hydrosym makes the drawing of schematics intuitive. Components and symbols are selected from the well-stocked library, placed on a canvas and connected by smart connection lines.

The library

Library tabs

The library can be found on the right-hand part of the screen. It is divided into three categories: Components, Components+, Symbols. Components are symbols with added information (like manufacturer, datasheet and type). Components+ are parts of schematics (compounded components/symbols) that are regularly used together, for example a tank or a power pack. Symbols are drawing objects without additional information. See THIS VIDEO for more information on how to make your own components and symbols.

Starting a new schematic

To start a new, empty schematic, press the button labelled New and select a template, or use the menu [File > New > Schematic]{.menuchoice}.

Placing components

Go to the Components tab in the library. The required component can be found by entering (part of) its name in the search field, or by browsing the tree view. A component is placed in the schematic by double clicking on it or by dragging it from the library onto the schematic. When placed, an optional Item Number can be entered.

Drawing connection lines

Connection lines are used to connect the ports of components or symbols. These lines can also connect other connection lines, or be drawn to specific locations in the schematic. Connection lines can be made in different ways, here three methods are explained for more information on the basics of drawing connection lines, see the video’s HERE and HERE.

Connection line between two ports

Connection line between ports

  1. Press the shortcut C or click the Connection line button icon in the left toolbar. Next, select the two ports that need to be connected by the line. A line will be suggested. The left mouse button inserts the extra points that the line will call at, the right mouse button finalizes the line. Note, Hydrosym starts building the line from the point that was selected last. This point is indicated by a red square (see image).

  2. When two ports that are not horizontally or vertically aligned need to be connected by a straight line, they can be automatically aligned. First, select both ports, then press C. The first selected port will act as reference for the alignment.

Between a port and a connection line, or between two connection lines

A connection line to a point on the schematic


A slanted connection line can be drawn by pressing O to disable the Ortho function while drawing.


A component (like a hose) that is placed on a connection line will be inserted into this line automatically.


Objects can be selected with the left mouse button. Hold Ctrl to add objects to a selection. A selection window can also be used: when it is dragged from right to left all objects that are entirely or partly enclosed in the window are selected. Dragging the window from left to right selects only the objects that are enclosed entirely within the window.


Selected objects can be moved around by ‘drag & drop’ with the arrow keys or by pressing the space bar. Pressing space while moving will rotate the objects 90 degrees.


The standard shortcuts ([Ctrl+C]{.keycombo}, [Ctrl+V]{.keycombo}, [Ctrl+Z]{.keycombo}) are available. The properties of a component can be edited by double clicking on it. Texts can be edited this way as well. A right click opens a pop-up menu with functions that depend on the number and type of the selected objects. For example, alignment will be available when multiple objects are selected. By clicking on it twice (but not double clicking) a symbol’s text can be moved without ungrouping the symbol.

The scroll wheel zooms in and out. Press the [home] key to adjust the zoom level to show the entire schematic. Panning is done by holding the middle mouse button, or by pressing shift and the left mouse button simultaneously.

Bill of Materials

The bill of materials is automatically filled while placing components. It can be accessed and edited via the menu View>Bill of materials. It can be printed or exported to a file (pdf, dxf, dwg) with the print button and it can be placed on the schematic.