Swegon 20210201, Technical Manual, Page: 16 / 72

Holiday, Energy-saving operating mode
When a room is not in use, it is possible via a main control system to
continue RE in the holiday mode.
The required airflow and switch in times for cooling and heating can be
selected in the holiday mode.
Boost, extra air supply
When the need for more air arises, the RE switches over to operate in the
Boost mode. This can occur for example when the CO2 level increases, or
if the temperature rises above the desired level in the room and more air
needs to be pressed in to increase the cooling capacity.
Timer, timed extra air supply.
The timer function is used for ventilating the room extra when the first
occupant enters the room after the room ventilation system has been
operating in the ECON/Holiday mode. The RE then operates in the Boost
mode.
The time is set with one parameter, factory preset to 5 min.
Stand-by mode.
When the control system registers a signal indicating that a window is open,
the controller switches over to the standby mode. When the window is
closed, the controller switches to the AUTO operating mode.
While the controller is in the Stand-by mode, the room temperature is
maintained above the predefined level for the Frost protection function.
EMERG, emergency mode.
In the event of a fire alarm, the air damper in the extract air duct is opened
or closed, depending on the setting entered in the control system. The
cooling and heating functions are shut off while the system is in the EMERG
mode. The supply air is normally shut off.
The EMERG mode can only be managed in control systems that are
connected to a main control system via ModBus RTU.
CONDUCTOR W4
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Swegon reserves the right to make design changes.. 20210201