EXPANSION VESSEL
Vessel with heating medium fluid with the task of equalising the pressure
in the heating medium system.
FLOW PIPE
The line in which the heated water is transported from the indoor module
out to the house's climate system (radiators/heating coils).
HEAT EXCHANGER
Device that transfers heat energy from one medium to another without
mixing mediums. Examples of different heat exchangers include evapor-
ators and condensers.
HEATING CURVE
The heating curve determines which heat the indoor module is to produce
depending on the temperature outdoors. If a high value is selected, this
tells the indoor module that it must supply a lot of heat when it is cold
outdoors in order to achieve a warm indoor temperature.
HEATING MEDIUM
Hot liquid, usually normal water, which is sent from the indoor module
to the house climate system and makes the accommodation warm. The
heating medium also heats the charge coil with the hot water.
OUTSIDE SENSOR
A sensor that is located outdoors. This sensor tells the indoor module
how hot it is outdoors.
RADIATOR
Another word for heating element. They must be filled with water in order
to be used with VVM 320.
REFRIGERANT
Substance that circulates around a closed circuit in the heat pump and
that, through pressure changes, evaporates and condenses. During
evaporation, the refrigerant absorbs heating energy and when condensing
gives off heating energy.
85Chapter 6 | GlossaryNIBE VVM 320
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