Set-Up; General Information; Acoustic Emissions; Installation - Dimplex WI 10TU Instructions D'utilisation Et D'installation

WI 10TU - WI 22TU
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
ensure 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 insula-
tion. Internal insulation measures should be carried out to pre-
vent vibrations from being transmitted to the foundation or to
the heating 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
system:
 Untreated filling water and make-up water must be of
drinking water quality (colourless, clear, free from sedi-
ments)
Filling water and make-up water must be pre-filtered (pore

size max. 5 µm).
Scale formation in domestic hot water heating systems cannot
be avoided, but in systems with flow temperatures below 60 °C,
the problem can be disregarded. With high-temperature heat
pumps and in particular with bivalent systems in the higher per-
formance range (heat pump + boiler combination), flow tem-
peratures of 60 °C and more can be achieved. The following
standard values should therefore be adhered to with regard to
the filling and make-up water according to VDI 2035, sheet 1:
The total hardness values can be found in the table.
Total heat
output in kW
< 50
50 - 200
200 - 600
> 600
1. This value lies outside the permissible value for heat exchangers in heat
pumps.
Fig. 7.1:Guideline values for filling and make-up water in accordance with
VDI 2035
For systems with an above-average specific system volume of
50 l/kW, VDI 2035 recommends using fully demineralized
water and a pH stabiliser to minimize the risk of corrosion in the
heat pump and the heating system.
ATTENTION!
With fully demineralized water, it is important to ensure that
the minimum permissible pH value of 7.5 (minimum
permissible value for copper) is complied with. Failure to
comply with this value can result in the heat pump being
destroyed.
452235.66.21 · FD 9912
Specific system volume
Total alkaline earths
(VDI 2035) in l/kW
in mol/m³ and/or
< 20
mmol/l
Total hardness in °dH
2.0 16.8
2.0  11.2
1.5 8.4
1
< 0.02
< 0.11
English
20 < 50 50
11.2
8.4
1
< 0.11
1
< 0.11
EN-5