Glossar Y - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

Glossary
Glossary
Additional heat
When the heat pump can not manage to heat the house
by itself, for example, if there is a considerable drop in
the outdoor temperature, the control unit ensures the
additional heat is connected. Together the heat pump
and additional heat guarantee the right temperature in
the house. Examples of additional heat are an electric
cassette or an external electric or oil-fi red boiler.
Alarm
The control unit switches off the heat pump and gives
alarms to protect the heat pump when something goes
wrong. This may, for example, be a sensor that indicates
a fault.
Cold side
The cold side designates the part of the system that
collects heat from the air and emits this to the refrigerant.
Compressor
The compressor increases the pressure of the refriger-
ant. The refrigerant, which is in gas form, is led from the
evaporator to the compressor. The pressure of the refrig-
erant increases in the compressor and the temperature of
the vapour rises from 0ºC to approximately +100ºC.
Condenser
The condenser is the heat pump's heat emitting part.
From here heat is transferred to the house's heating and
hot water systems. The vapour is cooled in the condenser
and becomes fl uid. The pressure in the refrigerant is still
high when it is led on to the expansion valve.
Control unit
The control unit Rego 603 is the brains of the heat pump.
It controls and monitors the heating and hot water supply
in your house. The monitoring function is especially
important. It shuts down the heat pump in the event of
operational disturbances so that no critical parts of the
heat pump are damaged.
Defrosting
Ice forms on the evaporator at outdoor temperatures
below +5ºC. When ice forms to an extent that it obstructs
the air fl ow through the evaporator automatic defrosting
starts.
Electric cassette
The electric cassette is an external energy source
connected to provide extra output in cold weather, when
large amounts of water are drawn off and with hot water
peaks.
Evaporator
The refrigerant meets the outdoor air in the evaporator.
At this stage the refrigerant is in a fl uid state and is at
approximately -10ºC. The refrigerant starts to boil due
to the compressor maintaining a low pressure in the
evaporator.
Expansion valve
The refrigerant pressure is lowered in the expansion
valve.
Fan
The fan is located in the top of Optima. This draws air
through the evaporator. Heat is taken from the air and is
transferred to the refrigerant.
Fuse
There are fuses in the heat pump to protect from over-
loading. The fuses trip when the heat pump is in danger.
You can read what has caused the fuses to trip on the
control panel.
Heat carrier pump
The heat carrier pump is located on the hot side and
ensures that the heating water circulates through the
heat pump and the hot water heater.
Heat cur ve
You use the heat curve to help set the indoor temperature
you would like. Raising or lowering the curve slope in the
menus Temp. incr. / decr. and Temp. fi ne-tune infl uences
the heat pump's production of heat.
Heating system
The heating system comprises pipes, valves and pumps
for the water circulated to the radiators and fl oor coils.
Hot side
The hot side is a common denomination for all the
components, valves, pipes, etc. that participate in the
transport of hot water and heating water to radiators and
fl oor coils. In the heat pump it is the condenser that is the
heat emitting component. From here heat is transferred
to the house's heating and hot water systems.
Hot water / Heating water
Hot water is the water coming out of the taps and the
shower. Heating water is the water circulating through
the radiators and heating coils.
66