Preparations
1.
Check that the switch (SF1) is in position " ".
2.
Check that the filling valves (QM10) and (QM11) are
fully closed.
Caution
Check the miniature circuit-breaker (FA1) in the
heat pump. It may have tripped during transport-
ation.
Filling and venting
Filling the hot water heater
1.
Open a hot water tap in the house.
2.
Open the filling valve (QM10). This valve should then
be fully open during operations.
3.
When water comes out of the hot water tap, the hot
water heater is full and the tap can be closed.
Filling the climate system
1.
Check that the shut-off valves for the heating system
(QM31) and (QM32) are open.
2.
Open the vent valves (QM20) and (QM21).
3.
Open the filler valves (QM11) and (QM13). The
heating section and the rest of the climate system
are filled with water.
4.
When the water exiting the vent valves (QM20) and
(QM21) is no longer mixed with air, close the valves.
After a while, the pressure rises on the pressure
gauge (BP5). When the pressure reaches 2.5 bar
(0.25 MPa), the safety valve (FL2) starts to release
water. Close the filler valve (QM11).
5.
Reduce the boiler pressure to the normal working
range (approx. 1 bar) by opening the vent valves
(QM20) and (QM21) or the safety valve (FL2).
6.
Check that there is water in the overflow cup (WM1).
If the overflow cup requires topping up:
1.
Turn the safety valve for hot water (FL1) anticlock-
wise carefully.
Venting the climate system
1.
Turn off the power supply to the heat pump.
2.
Vent the heat pump via the vent valve (QM20) and
the rest of the climate system via the relevant vent
valves.
3.
Vent the supply air battery via its vent valve (QM21).
4.
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
(QM20) is opened.
WM1 FL1
QM10 QM21
QM32 QM31
QM11 FL2
QM20
BP5
SF1
FD1QM13
NIBE F470Chapter 6 | Commissioning and adjusting32
6 Commissioning and adjusting
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