Nibe FIGHTER 1250 - Filling and Venting the Brine System; Filling and Venting the Heating Medium System; Internal Air Vent Valve, Brine

30
NIBE FIGHTER 1250
When fi lling the brine system mix the water with anti-
freeze in an open container. The mix must have freezing
protection down to -15 °C. Fill brine by connecting a fi lling
pump.
1. Check the brine system for leakage.
2. Connect the fi lling pump and return line on the brine
system's service connections as shown in fi gure.
3. Close the valve under the level vessel.
4. Close the valve between the service connections.
5. Open the valves on the service connections.
6. Start the fi lling pump, and fi ll until there is fl uid in the
return pipe.
7. Turn the heat pump's switch (8) to 1. NOTE! There
must be water in the heating medium system.
8. Select “Service” in menu 8.1.1.
9. Select “On” in menu 8.2.2.
10. Select “Continuously” in menu 9.2.12. The fi lling
pump and the heat pump's brine pump are now
operational. The fl uid should circulate via the mixing
container until it emerges from the return hose with-
out being mixed with air.
11. Select ”Intermittent” in menu 9.2.12.
12. Stop the fi lling pump and clean the particle fi lter.
13. Start the fi lling pump; open the valve between the
service connections.
14. Close the valve on the service connection's return line.
Now pressurise the system (to max 3 bar) with the fi ll-
ing pump.
15. Close the valve on the service connection closest to
the level vessel.
16. Stop the fi lling pump.
17. Fill the level vessel with liquid up to around 2/3.
18. Open the valve below the level vessel.
19. Select “Off” in menu 8.2.2.
20. Select the auto operating mode using the op-
erating mode button.
AV Shut-off valve
SÄV Safety valve
CW Cold water
NK Level vessel
SF Particle fi lter
RC Rock collector
SC Soil collector
HW Hot water
77
Filling and venting the brine system
Internal air vent valve (77), brine
Filling and venting the heating medium system
Fill the heating medium system with water to the required
pressure and vent the system.
C
Filling and venting
Köldbärarpump
VV KV
Värme
retur
Värme
fram
AV
BK / JK
KBin
KBut
Stängs
NK
SÄV
SF
AV
Heating
flow
Heating
return
Brine pump
Closes
Brine in
Brine out
CW HW
RC/SC