Warning
This is where the number of operating days is set which must elapse before an
alarm on incipient filter soiling in the outdoor air and extract air filters is signalled.
The factory setting is 100 days.
Alarm
This is where the number of operating days is set which must elapse before an
alarm for changing the outdoor air and extract air filters is signalled. The factory
setting is 100 days.
NB:
When the warning is set to the same number of days as the Alarm, the system will
not signal a warning.
Filter change
In the case of filter change, select "Yes", and the date for filter change will be saved
and the operating hours counter will be zeroised.
Menu 8.1
The same settings that can be configured in Menu 3.1.4 can be configured here.
Menu 3.1.5 - Night-time cooling
Function
Night-time cooling is typically used during hot summer periods in buildings which
are unoccupied during the night. During hot periods it may be desirable to cool down
the building during the night. The aim is to reduce the energy required for cooling
during the day by exploiting the lower night-time temperature combined with high
air replacement. Night-time cooling involves high airflow ventilation, without turning
on the cooling unit.
Conditions for
night-time cooling
The control system does a five-minute "test run" to check the following conditions
are met before activating the night-time cooling function:
●
Outdoor air temperature must be lower than the room temperature
●
Prior to initiating night-time cooling, there must not have been any heating re-
quirement within a time interval defined in the night-time cooling menu
●
Heating coils and rotor operation must not be active during night-time cooling
(does not apply during the test run)
●
As a factory default setting (set in Menu 3.1.5.9 Operation blocking), the night-
time cooling function can only be activated if Comfort operation is scheduled
for the following day
●
Extract air temperature must be higher than the set point
Conditions not met
If the above conditions are not met at the Start time, the control system will perform
a test run once an hour (until an hour before the Stop time) to check whether the
conditions for starting night-time cooling can now be met.
Override
The following can override the night-time cooling function:
●
If the system is controlled by a PIR sensor.
●
If the Manual indoor air quality level is active
3004256-2014-09-10
Starting up the unit for operation
32/72
Содержание EXact
Страница 70: ...3004256 2014 09 10 70 72...
Страница 71: ...3004256 2014 09 10 71 72...
Страница 72: ......