Emergency Mode; Expansion Valve; Expansion Vessel; Free Cooling - Nibe F1255PC User Manual

Emergency mode

A mode that can be selected using the switch in the event of a fault, which
means that the compressor stops. When the heat pump is in emergency
mode, the building and/or hot water is heated using an immersion heater.
Evaporator
Heat exchanger where the refrigerant evaporates by retrieving heat energy
from the brine which then cools.

Expansion valve

Valve that reduces the pressure of the refrigerant, whereupon the temper-
ature of the refrigerant drops.

Expansion vessel

Vessel with brine or heating medium fluid with the task of equalising the
pressure in the brine or heating medium system.
Fan convectors
A type of convector, but with auxiliary fan that blows hot or cold air into
the accommodation.
Filtering time
Enter the time the average outdoor temperature is calculated on.
Flow pipe
The line in which the heated water is transported from the heat pump out
to the house heating system (radiators/heating coils).

Free cooling

The cold brine from the collector/borehole is used to cool the accommod-
ation.
Heat exchanger
Device that transfers heat energy from one medium to another without
mixing mediums. Examples of different heat exchangers are evaporators
and condensers.
Heat factor
Measurement of how much heat energy the heat pump gives off in relation
to the electric energy it needs to operate. Another term for this is COP.
Chapter 6 | Glossary NIBE™ F1255PC 75