Heat exchanger
Device that transfers heat energy from one medium to another without
mixing mediums. Examples of different heat exchangers are evaporators
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.
Hot water coil
A hot water coil heats the domestic hot water (tap water) in the indoor
module with heating water (heating medium).
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 310.
Refrigerant
Substance that circulates around a closed circuit in the heat pump and
that, through pressure changes, evaporates and condenses. During evap-
oration, the refrigerant absorbs heating energy and during condensing,
gives off heating energy.
Return pipe
The line in which the water is transported back to the indoor module from
the house heating system (radiators/heating coils).
Return temp
The temperature of the water that returns to the indoor module after re-
leasing the heat energy to the radiators/heating coils.
63NIBE™ VVM 310Chapter 6 | Glossary
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