EN-6
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WI 10TU - WI 22TU
Minimum heating water flow rate
The minimum heating water flow rate through the heat pump
must be assured in all operating states of the heating system.
This can be accomplished, for example, by installing either a
dual differential pressureless manifold or an overflow valve. The
procedure for adjusting an overflow valve is described in the
Chapter Start-Up.
NOTE
º
The use of an overflow valve is only recommended for panel
heating and a max. heating water flow of 1.3 m³/h. System
faults may result if this is not observed.
The antifreeze function of the heat pump manager is active
whenever the heat pump manager and the heat circulating
pumps are ready for operation. If the heat pump is taken out of
service or in the event of a power failure, the system has to be
drained. The heating circuit should be operated with a suitable
antifreeze if heat pump systems are implemented in buildings
where a power failure can not be detected (holiday home).
7.3 Heat Source Connection
The following procedure must be observed when connecting
the heat source:
Connect the well pipes to the heat pump's flow and return.
ATTENTION!
!!
The well water must comply with the required water quality
standards. (see Cap. 9.4 on pag. 10)
The hydraulic integration diagram must be adhered to.
7.4 Temperature sensor
The following temperature sensors are already installed or must
be installed additionally:
External temperature sensor (R1) supplied (NTC-2)
Return temperature heating circuit (R2) installed (NTC-10)
Return temperature primary circuit (R24) installed (NTC-
10)
Flow temperature heating circuit (R9) installed (NTC-10)
Flow temperature primary circuit (R6) installed (NTC-10)
7.4.1 Sensor characteristic curves
The temperature sensors to be connected to the heat pump
manager must correspond to the sensor characteristic curve il-
lustrated in Fig.7.2 on pag. 6. The only exception is the external
temperature sensor included in the scope of supply of the heat
pump (see Fig.7.3 on pag. 6)
Fig. 7.2: Sensor characteristic curve NTC 10
Fig. 7.3: Sensor characteristic curve, NTC-2 according to DIN 44574 Ex-
ternal temperature sensor
Temperature in °C
-20
-15
-10
-5
0
5
10
NTC-2 in k
14.6
11.4
8.9
7.1
5.6
4.5
3.7
NTC-10 in k
67.7
53.4
42.3
33.9
27.3
22.1
18.0
15
20
25
30
35
40
45
50
55
60
2.9
2.4
2.0
1.7
1.4
1.1
1.0
0.8
0.7
0.6
14.9
12.1
10.0
8.4
7.0
5.9
5.0
4.2
3.6
3.1
0
10
20
30
40
50
60
70
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
Temperature in [°C]
Resistance value in
[kOhm]
0
2
4
6
8
10
12
14
16
18
20
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
External temperature in [°C]
Resistance value in
[kOhm]
Содержание WI 10TU
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