The Control Unit's Control Method For Heating - Worcester GREENSOURCE User Manual

Control unit
The control unit's control method for
heating
The control unit controls heating production based on an outdoor sensor or
an outdoor sensor in combination 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. A sensor is mounted on the
external north face on the wall of the house (the wall that is the coldest
and subjected to the least amount of sun). The sensor 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.
You are able to determine the temperature of the heating system, in relation
to the outdoor temperature, with the help of a number of settings (curves)
stored in the control unit. The curve indicates the fl ow temperature for
heating water in relation to the outdoor temperature. Selecting a lower
curve gives a lower fl ow temperature and therefore higher energy savings.
Control with an outdoor sensor and a room sensor
Control with an outdoor sensor supplemented with a room sensor means
that you also place a sensor in a reference position inside the house. This is
connected to the heat pump and provides the control unit with information
about the current room temperature. The signal affects the heat curve's
fl ow temperature. For example, it falls when the room sensor shows a
higher temperature than the one set.
A room sensor is used when factors other than the outdoor temperature
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 or exposed to direct sunlight.
It is only the room where the room
sensor is located that can infl uence
regulation of the temperature.
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Note