Nibe F370 Installer Manual page 54

DRAINING THE CLIMATE SYSTEM
In order to carry out service on the climate system, it
may be easier to drain the system first.
NOTE
There may be some hot water when draining
the heating medium side/climate system. There
is a risk of scalding.
The hot water can be drained through the safety valve
(FL2) via the overflow cup (WM1) or through a hose that
is connected to the safety valve's (FL2) outlet.
1. Open the safety valve (FL2).
2. Set the vent valve for the climate system (QM20)
in the open position for air supply.
HELPING THE CIRCULATION PUMP TO
START
The circulation pump in F370 has an automatic start help
function. If necessary the pump can be started manually.
In such cases, take the following action:
1. Shut off F370 by setting the switch (SF1) to mode
" ".
2. Remove the front hatch.
3. Press the screw for start help in using a star head
screwdriver as illustrated.
With the screw pressed in, turn the screwdriver in
4.
any direction.
5. Start F370 by setting the switch (SF1) to mode ""
and check that the circulation pump functions.
54 Chapter 9 | Service
TEMPERATURE SENSOR DATA
Temperature (°C) Resistance
(kOhm)
-40 351.0
-35 251.6
-30 182.5
-25 133.8
-20 99.22
-15 74.32
-10 56.20
-5 42.89
0 33.02
5 25.61
10 20.02
15 15.77
20 12.51
25 10.00
30 8.045
35 6.514
40 5.306
45 4.348
50 3.583
55 2.968
60 2.467
65 2.068
70 1.739
75 1.469
80 1.246
85 1.061
90 0.908
95 0.779
100 0.672
Voltage (VDC)
3.256
3.240
3.218
3.189
3.150
3.105
3.047
2.976
2.889
2.789
2.673
2.541
2.399
2.245
2.083
1.916
1.752
1.587
1.426
1.278
1.136
1.007
0.891
0.785
0.691
0.607
0.533
0.469
0.414
NIBE F370