Commissioning And Adjusting; Preparations; Filling And Venting - Nibe F370 Installer Manual

Commissioning and adjusting

Preparations

1.
Check that the switch (SF1) is in position " ".
2. Check that the externally mounted filling valves are fully
closed.
Caution
Check the miniature circuit-breaker (FC1). It could
have tripped during transport.
NOTE
Do not start F370 if there is a risk that the water
in the system has frozen.

Filling and venting

FILLING THE HOT WATER HEATER
1. Open a hot water tap in the house.
2. Open the externally mounted filler valve. This valve
should then be fully open during operations.
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 THE CLIMATE SYSTEM
1. Check that the shut-off valves for the heating system
(QM31) and (QM32) are open.
2. Open the vent valve (QM20).
3. Connect a hose to the filling valve for the heating sys-
tem (QM13).
4. Open the filling valve (QM13). The heating unit and the
rest of the climate system fill up with water.
5. When the water exiting the vent valve (QM20) is no
longer mixed with air, close the valve.
6. After a while, the pressure begins to rise 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 filling valve (QM13).
7. Reduce the boiler pressure to the normal working range
(approx. 1 bar) by opening the vent valve (QM20) or the
safety valve (FL2).
8. Check that there is water in the overflow cup (WM1).
VENTING THE CLIMATE SYSTEM
1.
Turn the power switch (SF1) to
2. Vent the heat pump via the vent valve (QM20) and the
rest of the climate system via its respective vent valves.
30 Chapter 6 | Commissioning and adjusting
3. Keep topping up and venting until all air has been re-
.
moved 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.
QM13 FL2
WM1 QM32 QM31
SF1
FC1
BP5
QM20
NIBE F370