Energy-Efficient Use Of The Heat Pump; Intended Use Of The Heat Pump; Intended Purpose; Operating Principle - Dimplex SIW 6 TU Instructions D'installation Et D'utilisation

1.4 Energy-efficient use of the heat
pump
By operating this heat pump you are helping to protect our envi-
ronment. Both the heating system and the heat source must be
properly designed and dimensioned to ensure efficient operation.
It is particularly important to keep water flow temperatures as low
as possible. All connected energy consumers should therefore
be suitable for low flow temperatures. Raising the heating water
temperature by 1 K corresponds to an increase in energy con-
sumption 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.
The domestic hot water temperature should not exceed 45 °C
when the heat pump is in operation. This will save you significant
amounts of energy.
2 Intended use of the heat
pump

2.1 Intended purpose

The high-efficiency compact brine-to-water heat pump with built-
in domestic hot water cylinder is intended only for heating water
and process water. It can be used in new or existing heating sys-
tems. A mixture of water and antifreeze (brine) is used as the
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 refriger-
ating cycle. 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.
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 is thus heated up to a
max. of 62 °C.
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3

Basic device

3.1 General

The basic device consists of a ready-for-use heat pump for in-
door installation in a compact design with built-in domestic hot
water cylinder.
All components required for the operation of the heat pump are
located on the switch box with heat pump manager. An outside
temperature sensor including 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 by the customer.
The customer must provide both the heat source system and the
brine circuit manifold.
1
3
1) Brine-to-water hydraulic module
2) Control panel with heat pump manager
3) Heat pump module
SIW 6TU - SIW 11TU
2
EN-3