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6
Set-up
6.1 General Information
The compact water-to-water heat pump must be installed in a
frost-free, dry room on an even, smooth and horizontal surface.
The entire base of the frame should lie directly on the floor to en-
sure an adequate soundproof seal. If supporting feet are used,
the heat pump must be installed horizontally. In this case, the
specified sound level can be up to
3 dB(A) higher, and additional sound insulation measures may
be necessary..
The heat pump must be installed so that maintenance work can
be carried out without hindrance. This can be ensured by main-
taining a clearance of approx. 1 m in front of and on each side of
the heat pump.
Neither frost nor temperatures higher than 35 °C must occur in
the installation location at any time of the year.
6.2 Acoustic Emissions
The heat pump operates silently due to efficient sound insulation.
Internal insulation measures should be carried out to prevent vi-
brations from being transmitted to the foundation or to the heat-
ing system.
7
Installation
7.1 General Information
The following connections need to be established on the heat
pump:
Flow and return flow of the well system
Flow and return flow of the heating system
Temperature sensor
Voltage supply
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7.2 Heating System Connection
ATTENTION!
Flush the heating system prior to connecting the heat pump.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities,
residue from sealants, etc. Any accumulation of deposits in the
liquifier could cause the heat pump to completely break down.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
Consideration must be given to the following when filling the sys-
tem:
Untreated filling water and make-up water must be of drink-
ing water quality (colourless, clear, free from sediments)
Filling water and make-up water must be pre-filtered (pore
size max. 5 µm).
Scale formation in hot water heating systems cannot be com-
pletely avoided, but in systems with flow temperatures below
60 °C the problem can be disregarded.
With medium and high-temperature heating systems, tempera-
tures above 60 °C can be reached.
The following standard values should therefore be adhered to
concerning the filling water and make-up water (according to VDI
2035 Sheet 1):
Total heat
output in [kW]
up to 200
200 to 600
> 600
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 sys-
tem. 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
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. 9)
The hydraulic integration diagram must be adhered to.
452235.66.09 · FD 9506
WI 10TU - WI 22TU
Total alkaline earths
Total
in mol/m³ and/or
hardness in °dH
mmol/l
2.0
11.2
1.5
8.4
< 0.02
< 0.11
EN-5
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