Manual Dimplex SI 10MER (page 19 of 64) (English, German, French)

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www.gdts.one 452232.66.41 · FD 9912 EN-3

SI 10MER English

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. A mixture of water and ant-

freeze (brine) is used as the heat transfer medium in the heat

source system. Borehole heat exchangers, ground heat colle-

tors 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 heat stored in the ground is collected at a low tem-

perature by the brine circulating in the ground collector, ground

coil or similar device. 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 refrigerating 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 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.

Subsequently, the refrigerant is passed through the condenser

where it transfers its heat energy to the heating water. Depend-

ing on the set operating point (thermostat setting), the heating

water is thus heated up to a max. of 62 °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 liq-

uifier 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.

3Basic Device

The basic device consists of a heat pump for indoor installation

wired ready for use with metal casing, switch box and inte-

grated heat pump manager. The refrigeration circuit is "hermet-

ically sealed" and contains the fluorinated refrigerant R410A in-

cluded in the Kyoto protocol. Information on the GWP value

and CO2 equivalent of the refrigerant can be found in the chap-

ter Device information. The refrigerant is CFC-free, non-ozone

depleting and non-combustible.

All components required for the operation of the heat pump are

located in the control box.. An external temperature sensor in-

cluding fixing accessories and a dirt trap are supplied with the

heat pump. The supply for the load current and the control volt-

age must be installed 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 customer must provide both the heat source system and

the brine circuit manifold.

1) Liquifier

2) Switch box

3) Evaporator

4) Compressor

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Dimplex SI 10MER Manual

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