NIBE FIGHTER 1250
Readjusting, heating medium side
Air is initially released from the hot water and venting
may be necessary. If bubbling sounds can be heard from
the heat pump, the entire system requires further vent-
ing. When the system is stable (correct pressure and all air
eliminated) the automatic heating control system can be
set as required.
Readjusting, brine side
Check the fl uid level in the level vessel (85). If the level has
dropped, close the valve under the vessel. You can then fi ll
through the connection at the top of the vessel. After fi ll-
ing, open the valve again.
The pressure is raised by closing the valve on the incom-
ing main line when the brine pump is running and the
level vessel is open, so that liquid is drawn down from the
vessel.
Emptying the hot water heater
The siphon principle is used to empty the hot water heater.
This can be done either via the drain valve on the incom-
ing cold water pipe or by inserting a hose into the cold
water connection.
Start-up and inspection
1. Set the switch (8) to 1.
2. Select operating mode ”Auto”.
3. Adjust the heating “Offset heat curve” knob so
there is no heating requirement.
4. Select “Service” in menu 8.1.1.
5. Select “On” in menu 8.2.2.
6. Select “10 times cont.” in menu 9.2.12. The brine
pump runs continuously for 10 days, and then returns
to intermittent operation.
7. Check that the cooling and heating medium systems
are vented.
8. Check that cooling and circulation pumps are opera-
tional. If necessary help the pumps to start.
9. Check that the brine temperatures in menu 5.0 corre-
spond with the ground/rock temperature, which indi-
cate brine fl ow.
10. Select “Off” in menu 8.2.2.
11. Select “On” in menu 9.3.
12. Adjust the “Offset heat curve” knob so there is a heat-
ing requirement.
13. Ensure that the heat pump produces heating for the
radiators/under fl oor heating system.
14. Select “On” in menu 9.11.2
15. Select “60” in menu 9.11.1.
16. Wait until the value in menu 5.12.0 is 60.
17. Check the fl ow and return line temperatures in menu
2.8. Adjust the fl ow so that the difference between
these temperatures is 4 – 6 ºC, by changing the speed
of the HM pump in menu 2.7.
18. Read off the temperature difference for the brine in
menu 5.0. The difference between these temperatures
should be 2 - 5 ºC.
19. Select “Off” in menu 9.11.2.
20. Set the date and time in menu 7.1 and 7.2.
21. Fill in the commissioning report on page 2.
22. Set the control system according to the needs of the
property.
C
Start-up and inspection
The compressor must not be forced to start
with periods shorter than 1 start per 15 min-
utes.
Note!
To Next Page
Loading...
