Start-up and
inspection
1.
Communication cable, terminal block (X22:1-4) must
be connected.
2.
If cooling operation with F2120 is wanted, DIP
switch S1 position 4 must be changed according to
the description below on page 24.
3.
Turn the isolator switch on.
4.
Ensure that the F2120 is connected to the power
source.
5.
Check that fuse (FC1) is on.
6.
Reinstall the removed panels and cover.
7.
After the power to F2120 has been switched on and
there is a compressor demand from the indoor
module/control module, the compressor starts once
it has warmed up, after max 180 minutes. The length
of this time delay depends on whether the com-
pressor has been warmed up previously. See
chapter Preparations on page 33.
8.
Adjust the charge flow according to size. Also see
section “Adjustment, charge flow” on page 35.
9.
Adjust menu settings via the indoor module/control
module as necessary.
10.
Fill in the commissioning report in the user manual.
11.
Remove the protective film from the cover on
F2120.
NOTE
The external control must be taken into consid-
eration when connecting.
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 circulation pump and radiators the
entire system will require further venting. When the
system is stable (correct pressure and all air eliminated)
the automatic heating control system can be set as re-
quired.
NIBE F2120Chapter 6 | Commissioning and adjusting34
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