DAXOM Naviels UKDAX-10EDT Installation And Operating Manual page 11

5.2.1.2 Filling Heating System for Models of ETT and ETM
After hydraulic connections are made, filling the heating system is necessary.
For the model of UKDAX –xxET Tand UKDAX –xxEDM this process is made
with filling valve connected to heating system. For this, connection with valve
must be made from cold water installation to heating system. This valve must
placed near place to device because of it will be used for filling the heating
system and must be position as it can be seen pressure indicator when the