Nibe F205P - Commissioning and Adjusting; Preparations; Venting the Heating System

18
F205P
For the Installer
Commissioning and adjusting
Commissioning and adjusting
Preparations
When connecting to a system with thermostats on all ra-
diators, a relief valve must be fitted, or some of the ther-
mostats must be removed to ensure sufficient flow.
Check that the switch (8) is set to “0”.
Check that valves (44) and (50) are fully open and that the
temperature limiter (6) has not tripped (press firmly the
knob). F205P is supplied with a limiting valve (5) mounted
on the outlet pipe. This one allows to set a maximum out-
let temperature in order to protect the floor in an existing
floor heating system. This valve is adjustable between 36
and 60 °C. Factory setting is 38 °C which corresponds to a
value between 1 and 2 on the knob. To change this value,
remove the protective cover and turn the settings knob
(19) clockwise for a lower temperature and anticlockwise
for a higher temperature to the desired setting.
Filling the water heater and the heating sys-
tem
1. The water heater is filled by opening a hot water tap.
When water comes out of the hot water tap this can
be closed.
2. Connect enclosed flexible hose (147) between connec-
tion (149) and connection (150) (the hose is mounted
at the unit when this is delivered). Open filling valves
(151) and (49). The boiler part of the heat pump and
the radiator system are now filled with water.
Venting the heating system
• Vent the electric boiler through the safety valve (52)
and the rest of the heating system through the rel-
evant venting valves.
• Keep topping up and venting until all air has been re-
moved and the pressure is correct.
3. After a while the pressure gauge (42) will show ris-
ing pressure. When the pressure reaches 2.5 (bar)
(approx. 25 mvp) a mixture of air and water starts to
emerge from the safety valve (52). The filling valves
(151) and (49) are then closed.
4. Turn the safety valve (52) until the boiler pressure
reaches the normal working range (0.5 - 1.5 bar).
5. The flexible hose between connection (149) and con-
nection (150) must not be connected during opera-
tion. Therefore, remove it before the heat pump is
started.
LE
K
LE
K
LE
K
( )
Auto
1
2
3
1
20 100
40 80
60
C
0 120
T G
2
1
bar
3
04
T G
( )
Auto
1
2
3
1
20 100
40 80
60
C
0 120
T G
2
1
bar
3
04
T G
( )
Auto
1
2
3
1
20 100
40 80
60
C
0 120
T G
2
1
bar
3
04
T G
Å
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5
When filling, after the heat pump is
started, the flexible hose must be installed
between connection (149) and (150).
Note!