Dimplex SI 75ZSR manual 2Purpose of the heat pump, Baseline Unit, 2.1Application, Heating, Cooling

3

2Purpose of the heat pump

2.1Application

The brine-to-water heat pump is designed for use in existing or newly built heating systems. Brine is used as the heat carrier in the heat source system. Ground coils, ground collectors or simi- lar systems can be used as the heat source.

2.2Principle of Operation

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 refrig- erant 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 60 °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.

3 Baseline Unit

The baseline unit consists of a heat pump, ready for connection, for indoor installation, complete with sheet metal cabinet, control box and integrated controller. The refrigeration cycle contains the refrigerant R404A. Refrigerant R404A 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. A sensor for the external wall temper- ature including mounting hardware as well as a strainer are sup- plied 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)Condenser

4)Compressor

5)Transport securing devices

6)Filter drier

English

www.dimplex.de E-3