42
In the
mixed-bed exchange resin
all mineral substances (e.g. calcium carbonate, chloride) contained in the
filling water are mostly removed depending on the capacity of the bottle.
In the
cation exchange resin
calcium ions that make the water “hard” are replaced by sodium ions. This
makes the heating water “soft”.
The filling and topping-up water required for the duration of the heating system is approximately double
the amount of the filling volume.
6.2
CONTROL PANEL
Operation of the heating circuit filling station takes place via the keypad and display (see fig. 4).
The keys have the following functions:
Fig. 4: Heating circuit filling station control panel
Key
Function
- Access to the main menu
- Back to the status display
- Scroll up in the menu
- Increase value
- Scroll down in the menu
- Reduce value
- Jump a menu level back without saving
- Access to the sub-menu
- Accept value and save, jump a menu level back
- Acknowledge message
Status display
Keypad