Check the tank pre-charge pressure
It is recommended to check the tank pre-charge pressure periodically while the system is operating
and add air if necessary.
Checking the pressure of the domestic water expansion tank (hydrophor):
- close the water supply to the house/apartment
- open the hot water tap
- wait until no more water comes on (tap remains open)
- measure the pressure of the domestic water expansion tank (hydrophor), it should be equal to cold water supply pressure - ask service provider
- if less, pump up. The valve on the tank is a normal car tire valve. Water may come out of the tap during pumping
- when the water no longer comes out of the tap and the tank pressure is achieved,
close the hot water tap and open the water supply to the house/apartment.