105Modul-AIR Exhaust Air Heat Pump Installation Guide
Refilling the Heating System
The central heating system needs to be topped up every so oen to maintain the recommended pressure.
The procedure is as follows:
Tap the Settings icon in the main menu
In the settings menu, navigate to purge.
Press Start and wait for the status bar to fill.
Operate the manual air vent on top of the Modul-AIR several
times during the purge program until only water comes out of
the vent.
Check that the water pressure has remained between 1.5 and
2.0 bar. If not, repeat steps 4-7.
Remove the filling hose and close the filling valve properly.
Navigate to the Moduł-AIR Settings screen and press the icon.
Check the water pressure. Is it lower than 1 bar? Then it’s time to top-up the central heating system.
To top-up the central heating system:
a. Locate the filling valve on your installation.
b. Connect the filling hose to a (cold) water tap and open the tap.
c. Make sure the hose is completely filled with water.
d. Remove the cap from the filling valve and connect the filling hose.
e. Open the filling tap and the (cold) water tap.
f. Close the fill valve.
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