Commissioning And Adjusting - Nibe F750 Serviceanleitung

Commissioning and adjusting

Check that the filler valves (QM10) and (QM11) are fully
closed.
Filling the hot water heater
1. Open a hot water tap in the house.
2. Open the filling valve . 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 valve for the heating system
(QM31) is open.
2. Open the vent valves (QM20), (QM22), (QM23) and
(QM24).
3. Open the filling valve. The boiler section and the rest
of the climate system are filled with water.
4. When the water that exits the bleed valves (QM20),
(QM22), (QM23) and (QM24) is not 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), (QM22), (QM23) and (QM24) or safety valve
(FL2).
6. Check that there is water in the overflow cup (WM1).
7. Start the heat pump and allow it to run in both
heating and hot water modes.
8. Vent the climate system (see section "Venting the
climate system").
If the overflow cup requires topping up:
1. Turn the safety valve (FL1) anticlockwise carefully.
NIBE F750 | GB
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Venting the climate system
1. Set the switch (SF1) in
2. Turn off the power supply to the heat pump.
3. Vent the heat pump via the vent valves (QM20),
4. Keep topping up and venting until all air has been
seconds.
(QM22), (QM23), (QM24) and the rest of the climate
system via the relevant vent valves.
removed and the pressure is correct.
NOTE
The vent hoses from the container must be
drained of water before air can be released. This
means that the system is not necessarily vented
despite the flow of water when the vent valves
are opened.
QM10 QM11 FL2 QM31
QM23 QM20 QM22
mode and wait approx. 30
QM24
FL1
SF1
F750
FD1
BP5
WM1
LEK
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