Nibe F2025, Installation And Maintenance Instructions Manual, Page: 23 / 56

Start-up and inspection
1.
Communication cable (44) or thermostat, plinth (30)
must not be connected.
2.
Turn the isolator switch on.
3. Check that all incoming phases are powered.
4. Check that the miniature circuit-breaker (2) is on.
5. The compressor heater (25) must have been operational
for at least 6 – 8 hours before the compressor start can
be initiated. This is done by switching on the control
voltage and disconnecting the communications cable or
thermostat.
6. The display on the control card (34) shows C0/CC F0
H1/H3 depending on the outdoor temperature. During
this period the compressor is heated to increase the
service life.
7.
The communication cable or external thermostat is con-
nected after 6 – 8 hours. See the section “Electrical
connection” – “Thermostat control”.
8.
Restart the SMO 10/VVM 300/EVP 500.
9. Once the connection is made, the compressor starts after
approx. 20 minutes if needed.
10. When the compressor starts, go to channel T5 on F2025
or to menu 5.13 in SMO 10 and check that the hot gas
temperature rises to at least 10 °C within 60 secs.
11. If the temperature does not rise in the hot gas sensor
the direction of rotation is incorrect.
- Stop the compressor by breaking the current using the
main circuit breaker.
- Ensure that the installation is disconnected from the
power source. Swap the two incoming phases at the
main circuit breakers.
- Supply the installation with power and go back to point
8 to carry out a new phase sequence check.
12.
Adjust the charge flow according to the diagram, see
the section "Adjustment, charge flow"
13. Fill in the commissioning report on page 2.
14. Remove the protective film from the cover on F2025.
NOTE
The live external control must be taken into considera-
tion 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 required.
21 F2025
For the Installer
Commissioning and adjusting