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Dimplex SI 75TU Manual

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www.gdts.one 452237.66.50 · FD 9912 EN-3
SI 50TU - SI 75TU English
1.3 Legal regulations and directives
This heat pump is designed for use in a domestic environment
according to Article 1, Paragraph 2 k) of EU directive 2006/42/
EC (machinery directive) and is thus subject to the require-
ments of EU directive 2014/35/EU (low-voltage directive). It is
thus also intended for use by non-professionals for heating
shops, offices and other similar working environments, agricul-
tural establishments and hotels, guesthouses and other resi-
dential buildings.
This heat pump conforms to all relevant DIN/VDE regulations
and EU directives. Refer to the EC Declaration of Conformity in
the appendix for details.
The heat pump must be connected to the power supply in
compliance with all relevant VDE, EN and IEC standards. Any
further connection requirements stipulated by local utility com-
panies must also be observed.
The heat pump is to be connected to the heat source system
and the heating system in accordance with all applicable regu-
lations.
This unit can be used by children aged 8 and over and by per-
sons with limited physical, sensory or mental aptitude or lack of
experience and/or knowledge, providing they are supervised or
have been instructed in the safe use of the unit and understand
the associated potential dangers.
Children must not play with the device. Cleaning and user
maintenance must not be carried out by children without su-
pervision.
ATTENTION!
!
!
Work on the heat pump must only be performed by
authorised and qualified after-sales service technicians!
ATTENTION!
!
!
When operating or maintaining a heat pump, the legal
requirements of the country where the heat pump is operated
apply. Depending on the refrigerant fill quantity, the heat
pump must be inspected for leaks at regular intervals by a
certified technician, and these inspections must be recorded.
More information can be found in the accompanying log book.
1.4 Energy-efficient use of the heat
pump
By operating this heat pump you are helping to protect our en-
vironment. Both the heating system and the heat source must
be properly designed and dimensioned to ensure efficient op-
eration. It is particularly important to keep water flow tempera-
tures as low as possible. All connected heat consumers should
therefore be suitable for low flow temperatures. Raising the
heating water temperature by 1 K corresponds to an increase in
electricity consumption of approx. 2.5 %. Low-temperature
heating systems with flow temperatures between 30 °C and
50 °C are particularly well-suited for energy-efficient operation.
2 Intended use of the heat
pump
2.1 Intended purpose
The brine-to-water heat pump is to be used exclusively for the
heating of heating water. It can be used in new or existing heat-
ing systems. A mixture of water and frost protection (brine) is
used as a heat transfer medium in the heat source system.
Borehole heat exchangers, ground heat collectors or similar
systems can be used as the heat source system.
2.2 Operating principle
The heat generated by the sun, wind and rain is stored in the
ground. This heat stored in the ground is collected at a low tem-
perature by the brine circulating in the ground heat collector,
the borehole heat exchanger or a similar system. A circulating
pump then conveys the "heated" brine to the evaporator of the
heat pump. There the heat is given off to the refrigerant in the
refrigeration circuit. This cools the brine so that it can once
again absorb thermal energy in the brine circuit.
The refrigerant is drawn in by the electrically driven compres-
sor, compressed and "pumped" to a higher temperature level.
The electrical power needed to run the compressor is not lost in
this process. Most of it is absorbed by the refrigerant.
The refrigerant subsequently passes through the liquifier where
it transfers its thermal energy to the heating water. Depending
on the set operating point, the heating water can thus be
heated up to a max. of 62 °C.
… 21 …


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