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7.3 Heat source connection
The following procedure must be observed when making the
connection:
Connect the well pipes to the heat pump's flow and return.
CAUTION!
It is essential that the dirt trap included in the accessories
pack is installed in the return (inlet).
CAUTION!
The well water must comply with the required water quality
standards (see Cap. 9.4 on page 9).
CAUTION!
The flow rate switch available as an accessory must be
installed in the flow (outlet) of the heat source.
The hydraulic integration diagram must be adhered to.
7.4 Temperature sensor
The following temperature sensors are already installed or must
be installed additionally:
Outside temperature sensor (R1) supplied (NTC-2)
Return temperature secondary circuit (R2) installed
(NTC-10)
Return temperature primary circuit (R24) installed (NTC-
10)
Flow temperature secondary circuit (R9) installed (NTC-10)
Flow temperature primary circuit (R6) installed (NTC-10)
7.4.1 Sensor characteristic curves
-20
-15
Temperature in °C
NTC-2 in k
14.6
11.4
NTC-10 in k
67.7
53.4
15
20
25
30
35
2.9
2.4
2.0
1.7
14.9
12.1
10.0
8.4
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 page 6. The only exception is the outside
temperature sensor included in the scope of supply of the heat
pump (see Fig. 7.3 on page 6)
70
60
50
40
30
20
10
0
-20
-15
-10
-5
0
5
10
External temperature in [°C]
Fig. 7.2:Sensor characteristic curve NTC-10
EN-6
-10
-5
0
5
8,9
7.1
5.6
4.5
42.3
33.9
27.3
22.1
40
45
50
55
1.4
1.1
1.0
0.8
0.7
7.0
5.9
5.0
4.2
3.6
15
20
25
30
35
40
45
50
452237.66.53a · FD 0211
20
18
16
14
12
10
8
6
4
2
0
-20
-15
-10
-5
Fig. 7.3:Sensor characteristic curve NTC-2 according to DIN 44574 Out-
side temperature sensor
7.4.2 Mounting the outside temperature
sensor
The temperature sensor must be mounted in such a way that all
weather conditions are taken into consideration and the meas-
ured value is not falsified.
On the external wall of a heated room used as living space,
if possible on the north or north-west side of the building
Do not install in a "sheltered position" (e.g. in a wall niche or
under a balcony)
Not in the vicinity of windows, doors, exhaust air vents, ex-
ternal lighting or heat pumps
Not to be exposed to direct sunlight at any time of year
-
Dimensioning parameter sensor lead
Conductor material
Cable-length
Ambient temperature
10
3.7
Laying system
18.0
External diameter
60
0.6
7.4.3 Installing the strap-on sensor
3.1
It is only necessary to mount the strap-on sensors if they are in-
cluded in the scope of supply of the heat pump but have not yet
been installed.
The strap-on sensors can be fitted as pipe-mounted sensors or
installed in the immersion sleeve of the compact manifold.
Mounting as a pipe-mounted sensor
Remove paint, rust and scale from heating pipe.
Coat the cleaned surface with heat transfer compound (ap-
ply sparingly).
Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate.
55
60
Thermal insulation
0
5
10
15
20
25
30
35
External temperature in [°C]
Cu
50 m
35 °C
B2 (DIN VDE 0298-4 /
IEC 60364-5-52)
4-8 mm
Hose clip
Strap-on sensor
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