Nibe F370 User Manual page 25

Filling the climate system
If the pressure is too low, increase as follows:
1. Check if the flexi hose supplied is connected between the two filler
valves. Adjust the hose if this has not been done.
2. Open the filler valves. The boiler unit and the rest of the climate system
are filled with water.
3. After a while the pressure rises on the pressure gauge. When it is ap-
prox. 1.0 bar close the filler valves.
Venting the climate system
In event of repeated filling of the climate system or if bubbling sounds are
heard from the heat pump the system may need venting. This is carried
out as follows:
1. Turn off the power supply to the heat pump.
2. Vent the heat pump via the vent valve and the rest of the climate sys-
tem via the relevant vent valves.
3. Keep topping up and venting until all air has been removed and the
pressure is correct.
NOTE
The vent pipe from the container must be drained of water before air can
be released. This means that the system is not necessarily bled despite
the flow of water when the bleed valve is opened.
Therefore hold the vent valve open at least 5 seconds.
Chapter 2 | The heat pump – the heart of the house
LE K
NIBE™ F370 23