Nibe F1145 5 - Page 67

When the brine side is empty the requisite service can be
carried out.
Draining the brine system in the heat pump
If the heat pump requires servicing, drain the brine system
by:
1.
Close the shut-off valve outside the heat pump for
the brine system.
2.
Connect a hose to the drain valve (QM2), place the
other opening of the hose in a container and open
the valve. A small amount of brine will flow into the
container.
3.
Air must get into the system for the remaining brine
to run out. Do this by slightly slackening off the
connection at the shut-off valve that joins the brine
side and the heat pump at the connection (XL7).
When the brine side is empty the requisite service can be
carried out.
Helping the circulation pump to start (GP1)
1.
Shut off F1145 by setting the switch (SF1) to " ".
2.
Open the service cover.
3.
Remove the cover for the cooling module.
4.
Loosen the venting screw (QM5) with a screwdriver.
Hold a cloth around the screwdriver blade as a small
amount of water may run out.
5.
Insert a screwdriver and turn the pump motor
around.
6.
Screw in the venting screw (QM5).
7.
Start F1145 by setting the switch (SF1) to "" and
check whether the circulation pump works.
It is usually easier to start the circulation pump with F1145
running, switch (SF1) set to "
". Helping the circulation
pump to start is performed with F1145 running, be pre-
pared for the screwdriver to jerk when the pump starts.
Luftningsskruv
16
LEK
GRUNDFOS
Type UPS
25 - 60
130
P/N:59526447
230V-
HEJSAN
PC;0017NIB
DK
50Hz
IP 44
TF 110
Class H
Max. 10bar
2.5uF
45
0.20
65
0.30
90
0.40
1m(A) P,(W)
*3
9HQW VFUHZ 40
The image shows an example of what a circulation pump can look
like.
Temperature sensor data
Voltage (VDC)Resistance
(kOhm)
Temperature
(°C)
3.256351.0-40
3.240251.6-35
3.218182.5-30
3.189133.8-25
3.15099.22-20
3.10574.32-15
3.04756.20-10
2.97642.89-5
2.88933.020
2.78925.615
2.67320.0210
2.54115.7715
2.39912.5120
2.24510.0025
2.0838.04530
1.9166.51435
1.7525.30640
1.5874.34845
1.4263.58350
1.2782.96855
1.1362.46760
1.0072.06865
0.8911.73970
0.7851.46975
0.6911.24680
0.6071.06185
0.5330.90890
0.4690.77995
0.4140.672100
65Chapter 9 | ServiceNIBE™ F1145