Functional Description - Gira System 3000 Operating Instructions Manual

System 3000
Room temperature controller Display, Room temperature controller BT
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Functional description

Heating and cooling operating mode
Modern heat pump systems often also provide the option of cooling rooms. This function is sup-
ported by the cover by means of the "Heating and cooling" operating mode. In this operating
mode the system permanently regulates the temperature to the set cooling temperature. There
are no time programs in cooling mode. The only way to change the cooling temperature con-
sists in adjusting the temperature parameters, the +/- buttons cannot be used.
In conjunction with a room temperature controller insert, cooling mode is activated by applying
mains power to input terminal "C". With switch inserts, cooling mode is activated by applying
mains power to extension input "1".
Frost protection / temperature drop detection Ʒ
The frost protection temperature is the minimum temperature regulated by the controller in order
to avoid frost damage. In case of a significant temperature drop, e.g. after opening a window,
the system regulates to the frost protection temperature for a maximum of 30 minutes. This re-
quires the temperature drop detection parameter Ʒ to be activated.
Optimised heating up ƹ
Heating is started at most 4 hours before the switching time, so that the desired temperature
has been reached at the switching time rather than starting to heat up at that time. The display
icon ƹ flashes during the heat-up phase.
Note: Optimised heating up is designed for panel heating/radiators.
Offset Ƴ
If the system detects that the displayed actual temperature differs from the general room tem-
perature, this parameter can be used to enter a correction value. The actual temperature will
then be corrected by this offset value.
Controller adaptation Ƽ
The control principle should be adjusted depending on the heating system and the insert used.
Two-point control (2P): The output remains switched on until the selected setpoint temperature
has been exceeded by 0.5 °C. The output will not be switched on again until the setpoint value
is undercut by 0.5 °C. Since most heating systems respond very slowly, this type of control can
entail temperature overshooting.
Pulse width modulation control (PWM): Optimised for electrothermal valve drives, e.g. 2169 00.
The output is not permanently actuated, but only for a time period (pulse width) that depends on
the difference between setpoint and actual temperature. This method brings the actual temper-
ature gradually closer to the setpoint temperature. The cycle time is 15 minutes.
Valve adaptation Ƹ
This parameter is used to adapt to the electrothermal valve drives. There are drives that are
either open (deenergised open, setting NO) or closed (deenergised closed, setting NC) when no
power supply is applied.
Temperature sensor ƻƺ
The room temperature controller cover features a built-in temperature sensor, which is used to
detect the room temperature. With the Bluetooth version, an app can be used to integrate a
brightness/temperature sensor. In this case, the internal sensor will be deactivated.
In conjunction with a room temperature controller insert a remote sensor can be connected,
either to measure the room temperature or limit the maximum floor temperature.
The following settings are possible.
ƻ: The room temperature is measured using the internal temperature sensor or the BT
brightness and temperature sensor.
ƺ: The room temperature is measured using the remote sensor. The internal temperature
sensor is deactivated.
ƻ and ƺ: The room temperature is measured using the internal temperature sensor
and the floor temperature is measured using the remote sensor for monitoring the floor temper-
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