The Control Unit's Two Methods To Control The Heat Pump - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

The control unit's two methods to control
the heat pump
We have already described the control unit's two working situations,
operating modes. The control unit also 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 in this control mode. 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. I.e. when 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 (curves) on the control
unit. Selecting 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 tempera-
ture infl uence the indoor temperature. Examples include the use of a stove
or fan-assisted radiator 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.
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Control unit Rego 603
Note