Energy-Efficient Use Of The Heat Pump; Intended Use Of The Heat Pump; Area Of Application; Operating Principle - Dimplex SI 35TUR Instructions D'installation Et D'utilisation

SI 35TUR
1.4 Energy-efficient use of the heat
pump
By operating this heat pump you are helping to protect our envi-
ronment. To ensure efficient operation, the heating or cooling
system and the heat source must be properly designed and di-
mensioned. It is particularly important to keep water flow temper-
atures as low as possible in heating operation. All connected
heat consumers should therefore be suitable for low flow temper-
atures. Raising the heating water temperature by 1 K corre-
sponds to an increase in electric energy 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 Area of application

The brine-to-water heat pump is to be used exclusively for the
heating and cooling of heating water. It can be used in new or ex-
isting heating systems. A mixture of water and frost protection
(brine) is used as a heat transfer medium in the heat source sys-
tem. Borehole heat exchangers, ground heat collectors or similar
systems can be used as the heat source system.

2.2 Operating principle

Heating
The heat generated by the sun, wind and rain is stored in the
ground. This ground heatis collected at a low temperature by the
brine in the ground heat collector, borehole heat exchanger or
similar.
A circulating pump then conveys the "heated" brine to the evap-
orator of the heat pump. There the heat is given off to the refrig-
erant 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 compressor,
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 in the form of
thermal energy.
Subsequently, the refrigerant is passed through the liquefier,
where it transfers its heat energy to the heating water. Depend-
ing on the set operating point, the heating water is thus heated
up to max. 62 °C.
Cooling
The functions of the evaporator and the liquefier are reversed in
the "Cooling" operating mode.
The heating water transfers its heat to the refrigerant via the liq-
uefier, which is now functioning as an evaporator. The refrigerant
is brought to a higher temperature level using the compressor.
Heat passes into the brine via the liquefier (evaporator in heating
operation) and consequently into the ground.
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2.3 Functional description for
The compressor manufacturer's performance specifications for
different pressure levels are stored in the heat pump software.
Two additional pressure sensors for determining the current
pressure level are installed in the refrigerating circuit, one before
and one after the compressor. The current heat output can be
calculated from the compressor data stored in the software and
the current pressure level. The integral for the heat output over
the runtime gives the quantity of thermal energy supplied by the
heat pump, which is displayed separately for heating, domestic
hot water preparation and swimming pool water preparation on
the manager display.
3
The basic device consists of a heat pump for indoor installation
wired ready for use with metal casing, switch box and integrated
heat pump manager. The refrigeration circuit is "hermetically
sealed" and contains the fluorinated refrigerant R410A incorpo-
rated in the Kyoto protocol. Information on the GWP value and
CO equivalent of the refrigerant is available in the chapter De-
2
vice information. The refrigerant is CFC-free, non-ozone deplet-
ing and non-combustible.
All components required for the operation of the heat pump are
located in the switch box. An outside temperature sensor includ-
ing fixing accessories and a dirt trap are supplied with the heat
pump. The supply for the load current and the control voltage
must be installed on-site.
Both the heat source system and the brine circuit manifold must
be provided on-site.



1) Switch box
2) Evaporator
3) Liquefier
4) Compressor 1
5) Compressor 2
6) Expansion valve
7) Filter dryer
8) Four-way reversing valve
452237.66.40 · FD 9610
integrated thermal energy
metering

Basic device





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