Domestic Hot Water - Nibe F1145 User Manual

Compressor
Compresses the gas state refrigerant. When the refrigerant is compressed,
the pressure and the temperature increase.
Condenser
Heat exchanger where the hot gas state refrigerant condenses (cooled
and becomes a liquid) and releases heat energy to the house heating and
hot water systems.
Convector
Works in the same way as a radiator, but with the difference that the air
is blown out. This means that the convector can be used to heat or cool
the accommodation.
COP
If it is stated that a heat pump has COP 5, this means, in principle that if
you insert 10 pence, you will get 50 pence worth of heat. It is the efficiency
of the heat pump. This is measured at different measurement values, e.g.:
0/35 where 0 stands for how many degrees the temperature of the incom-
ing brine is and 35 for how many degrees the supply temperature is.
Disturbances in comfort
Disturbances in comfort are undesirable changes to the hot water/indoor
comfort, for example when the temperature of the hot water is too low
or if the indoor temperature is not at the desired level.
A malfunction in the heat pump can sometimes be noticed in the form of
a disturbance in comfort.
In most cases, the heat pump notes operational interference and indicates
this with alarms and shows instructions in the display.

Domestic hot water

The water one showers in for example.
Double-jacketed tank
A heater with domestic hot water (tap water) is surrounded by an outer
vessel with boiler water (to the house radiators/elements). The heat pump
heats the boiler water, which in addition to going out to the all the house
radiators/elements, heats the domestic hot water in the inner vessel.
DUT, dimensioned outdoor temperature
The dimensioned outdoor temperature differs depending on where you
live. The lower the dimensioned outdoor temperature, the lower the value
should be selected on "selecting a heat curve".
68 Chapter 6 | Glossary NIBE™ F1145