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Dimplex SIH 20TE Manual

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EN-6 452234.66.77 · FD 9912 www.gdts.one
English SIH 20TE
6Installation
6.1 General Information
The brine-to-water heat pump must be installed in a frost-free,
dry room on an even, smooth and horizontal surface. The entire
frame should lie directly on the floor to ensure an adequate
soundproof seal. Failing this, additional sound insulation meas-
ures may become necessary.
The heat pump should be installed to allow easy maintenance/
service access. This is ensured if a clearance of approx. 1 m in
front of the heat pump is maintained.
Neither frost nor temperatures higher than 35 °C must occur in
the installation location at any time of the year.
6.2 Sound Emissions
The heat pump offers silent operation due to efficient sound in-
sulation. Any vibration transmission to the foundation or the
heating system can be largely prevented by internal sound de-
coupling measures.
7Mounting
7.1 General Information
The following connections need to be estab-lished on the heat
pump:
Flow and return of the brine (heat source system)
supply/return flow of the heating system
Temperature sensor
Voltage supply
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
remove 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 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.
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.
1m
0,5m
Total heat
output in kW
Total alkaline earths
in mol/m³ and/or
mmol/l
Specific system volume
(VDI 2035) in l/kW
< 20 20 < 50 50
Total hardness in °dH
< 50 2.0 16.8 11.2
< 0.111
50 - 200 2.0 11.2 8.4
200 - 600 1.5 8.4 < 0.111
> 600 < 0.02 < 0.111
1. This value lies outside the permissible value for heat exchangers in heat
pumps.
… 22 …


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