Purpose Of The Heat Pump; Application; Operation Principle; Functional Description For Integrated Thermal Energy Metering - Dimplex SI 130TUR+ Gebrauchsanweisung

2 Purpose of the Heat
Pump

2.1 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
previously existing heating systems. Brine is used as the heat
transfer medium in the heat source system. Borehole heat ex-
changers, ground heat collectors or similar systems can be used
as the heat source.
Neither frost nor temperatures higher than 25°C must occur in
the installation location at any time of the year.

2.2 Operation principle

Heating
The heat generated by the sun, wind and rain is stored in the
ground. This heat stored in the ground is collected at low temper-
ature by the brine circulating in the ground collector, ground coil
or similar device.
A circulating pump then conveys the warmed brine to the evapo-
rator of the heat pump. There, the heat is given off to the refriger-
ant in the refrigeration cycle. When so doing, the brine cools so
that it can again take up heat energy in the brine circuit.
The refrigerant is drawn in by the electrically driven compressor,
is compressed and "pumped" to a higher temperature level. The
electrical power needed to run the compressor is not lost in this
process, but most of the generated heat is transferred to the re-
frigerant.
Subsequently, the refrigerant is passed through the condenser
where it transfers its heat energy to the heating water. Based on
the thermostat setting, the heating water is thus heated to up to
58 °C.
Cooling
The functions of the evaporator and the liquifier are reversed in
the "Cooling" operating mode.
The heating water gives up its heat to the refrigerant via the liqui-
fier which is now functioning as an evaporator. The refrigerant is
pumped to a higher temperature level using the compressor.
Heat passes into the brine via the liquifier (evaporator in heating
operation) and consequently into the ground.
2.3 Functional description for
integrated thermal energy
metering
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 after the compressor. The current heat output can be calcu-
lated 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
controller's display.
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3

Scope of supply

3.1 Basic device

The basic device consists of a ready-to-use heat pump for indoor
installation, complete with sheet metal casing, control panel and
integrated controller. The refrigerant circuit is hermetically
sealed. It contains the Kyoto protocol approved refrigerant
R410A with a GWP value of 1720. It is CFC-free, does not de-
plete ozone and is non-flammable.
All components required for the operation of the heat pump are
located in the control box. An external wall temperature sensor
including fixing accessories, a dirt trap and a flow rate switch, is
supplied with the heat pump. The voltage supply for the load and
control current must be provided by the customer.
The control wire of the brine pump (to be provided by the cus-
tomer) is to be connected to the control box. When so doing, a
motor protecting device is to be installed, if required.
The collector including the brine manifold must be provided by
the customer.
1) Control
2) Evaporator
3) Liquefier
4) Compressor
5) Transport securing devices
6) Hot water liquefier
3.1
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