Nibe VPB series User's And Installer's Manual page 16

Filling
NOTE
At the time of commissioning, complete all rel-
evant sections of the Benchmark Checklist loc-
ated at the back of this document.
Completion of the Benchmark Checklist is a
condition of warranty. For full terms and condi-
tions of warranty, please see our website
www.nibe.co.uk.
Filling and venting
Filling the hot water heater
1. Open a hot water tap in the house.
2. Fill the hot water heater through the cold water
connection (XL3).
3. When the water that comes out of the hot water
tap is no longer mixed with air, the water heater is
full and the tap can be closed.
Filling and venting the charge coil
Filling
1. Open the filling valve (external, not included with
the product). Fill the coil in the hot water heater and
the rest of the climate system with water.
2. Open the vent valve (QM22).
3. When the water that exits the vent valve (QM22) is
not mixed with air, close the valve. After a while the
pressure starts to rise.
4. Close the filling valve when the correct pressure is
obtained.
Venting
1. Vent the coil via the vent valve (QM22) and the rest
of the climate system via the relevant vent valves.
2. Keep topping up and venting until all air has been
removed and the pressure is correct.
16 Chapter 3 | For the Installer
XL3
The figure shows VPBS 300.
QM22
VPB/VPBS