Preparations
1.
Check that the switch (SF1) is in position " ".
2.
Check that the drain valve is fully closed and that
the temperature limiters (FQ10) and (FQ11) have
not deployed.
3.
Compatible NIBE air/water heat pump must be
equipped with a control board that, as a minimum,
has the software version as listed on page 18.
Filling and venting
FILLING THE HOT WATER HEATER IN
VVM 320
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 hot water tap can be closed.
FILLING VVM 320
1.
Open the vent valve (QM20).
2.
Open the filler valves (QM11). VVM 320 is filled with
water.
3.
When the water exiting the vent valve (QM20) is
not mixed with air, close the vent valve. After a while
the pressure rises on the manometer. When the
opening pressure for the safety valve has been
reached, it starts to release water. Close the filler
valve. Vent the water heater coil with QM22.
4.
Open the safety valve until the pressure in VVM 320
falls to the normal working range (approx. 1 bar) and
check that there is no air in the system by turning
the vent valve (QM20).
VENTING THE CLIMATE SYSTEM
1.
Cut the power to VVM 320.
2.
Vent VVM 320 through the vent valve (QM20) and
other climate systems through their relevant vent
valves.
3.
Keep topping up and venting until all air has been
removed and the pressure is correct.
Venting valve (QM20)
FQ10
FC1
SF1
QM11
QM22
FQ11
DRAINING THE CLIMATE SYSTEM
1.
Connect a hose to the lower filler valve for heating
medium (QM11).
2.
Open the valve to drain the climate system.
Also see Draining the climate system on page 64.
39Chapter 6 | Commissioning and adjustingNIBE VVM 320
6 Commissioning and adjusting
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