The Control Unit's Two Methods To Control The Heat Pump - IVT Greenline HT Plus C Assembly, Commissioning And Maintenance Manual

The control unit's two methods to control
the heat pump
The control unit uses two different methods to control the heat pump.
These two methods are: Control with an outdoor sensor and Control with an
outdoor sensor supplemented with a room sensor.
Control with an outdoor sensor
Control with an outdoor sensor is the most common method used by the
control unit to control the heat pump. When the heat pump is delivered it
is set for this control method. A sensor is fi tted on the outside wall of the
house. It sends signals to the control unit in the heat pump. Control with
an outdoor sensor means that the heat pump automatically regulates the
heating in the house depending on the outdoor temperature. If the outdoor
temperature drops, i.e. it becomes colder; the radiators inside the house
will become warmer.
You determine the temperature of the radiators, in relation to the outdoor
temperature, with the help of a number of settings such as selecting the
heat curve on the control unit. A lower curve gives higher energy savings.
Control with an outdoor sensor supplemented with
a room sensor
Control with an outdoor sensor supplemented with a room sensor means
that you also place a sensor in a central position inside the house. This is
connected to the heat pump and provides the control unit with information
about the room temperature. The signals affect the control unit's settings
(curves) and ensure the heat pump gives the best possible energy savings.
This control method is used when factors other than the outdoor tem-
perature infl uence the indoor temperature of the house. For example, this
can be when a stove or fan-assisted radiator is used in the house, or if the
house is sensitive to the wind.
It is only the room where the room
sensor is located that can infl uence
regulation of the temperature.
When using night reduction or a form
of external control of the heat pump,
the room sensor becomes inactive for
2 hours.
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Control unit Rego 637
Note
Note