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7.2 Connection on heating side
ATTENTION!
The heating system must be flushed prior to connecting the heat pump.
Before completing the heat pump connections on the heating
water side, the heating installation must be flushed in order to re-
move any impurities that may be present, as well as residues of
sealing material, and the like. Any accumulation of deposits in
the condenser may result in a total failure of the heat pump.
Once the installation on the heating side has been completed,
the heating system must be filled, de-aerated and pressure-
tested.
Consideration must be given to the following points when filling
the system:
Untreated filling water and make-up water must be of drin-
king water quality (colourless, clear, free of sediments).
Filling water and make-up water must be pre-filtered (max.
pore size 5µm).
Scale formation in domestic hot water heating systems cannot be
completely avoided, but in systems with flow temperatures below
60 °C, the problem can be disregarded.
With medium and high-temperature heat pumps, even tempera-
tures above 60 °C can be reached.
The following standard values should therefore be adhered to re-
garding the filling water and make-up water (according to VDI
2035, sheet 1):
Total alkaline earths
Total heat
in mol/m³ and/or
output in [kW]
mmol/l
≤
bis 200
≤
200 bis 600
> 600
< 0,02
Minimum heating water flow
The minimum heating water flow through the heat pump must be
assured in all operating states of the heating system. This can be
accomplished, for example, by installing a dual differential pres-
sureless manifold.
NOTE
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.
Frost protection for installations prone to frost
Provided the heat pump manager and heating circulating pumps
are ready for operation, the frost protection feature of the heat
pump manager is active. If the heat pump is taken out of service
or in the event of a power failure, the system has to be drained.
In heat pump installations where a power failure cannot be read-
ily detected (holiday house), the heating circuit must contain a
suitable antifreeze product.
EN-6
All manuals and user guides at all-guides.com
Total
hardness in °dH
≤
2,0
11,2
≤
1,5
8,4
< 0,11
452234.66.37 · FD 9205
7.3 Connection on heat source
side
The following procedure must be observed when making the
connection:
Connect the well pipes to the heat pump's flow and return.
ATTENTION!
It is essential that the dirt trap included in the accessories pack is
installed in the return (inlet).
ATTENTION!
The well water must comply with the required water quality standards.
The hydraulic plumbing 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
Return temperature heating circuit (R2) installed
Return temperature primary circuit (R24) installed
Flow temperature heating circuit (R9) installed
Flow temperature primary circuit (R6) installed
7.4.1 Sensor characteristic curves
Temperature in °C
-20
-15
Standard NTC-2 in kΩ 14.6
11.4
NTC-10 in kΩ
67.7
53.4
15
20
25
30
35
2.9
2.4
2.0
1.7
1.4
14.9
12.1
10.0
8.4
7.0
The temperature sensors to be connected to the heat pump ma-
nager must correspond to the sensor characteristic curve illustra-
ted in Fig.7.1 on pag. 6. The only exception is the external tem-
perature sensor included in the scope of supply of the heat pump
(see Fig.7.2 on pag. 7)
Fig. 7.1:Sensor characteristic curve NTC 10
-10
-5
0
5
10
8.9
7.1
5.6
4.5
3.7
42.3
33.9
27.3
22.1
18.0
40
45
50
55
60
1.1
1.0
0.8
0.7
0.6
5.9
5.0
4.2
3.6
3.1
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