SystemAir HHFlex C, Руководство по эксплуатации

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4.5 Filter Monitoring equipped with a pressure sensor
Parameters for this function are available in the menu Settings.
The supply (PT01) and extract (PT02) filter section is equipped with a pressure sensor connected to EXOline connected to
the controller. If the pressure drop across the filter exceeds the preset value an internal timer is started. After an elapsed
time of 60 minutes (by default) a service alert is generated. Alarm level will be adjusted on the “Human machine
interface” or “web browser”. On the supply pressure sensor (PT01) are the inlet air temperature (TT01)/ humidity sensor
(MT01) connected.
On the exhaust pressure sensor (PT02) are the exhaust air temperature (TT03)/ humidity sensor (MT03) connected.
To avoid possible false maintenance alarms caused by water droplets arrested in the (inlet air) filters during foggy weather
conditions, the pressure drop monitoring is only active between 12:00 and 18:00 h (by default).
4.1 Dry outdoor filter control equipped with a pre-heater
For the Maintenance and lifespan of an outdoor filter the pre-heater must be placed before the filter. The pre-heater keeps
the filter free of bacterial growth and a guaranteed air quality.
The following modes of operation can be selected:
•
Temperature controlled Default setpoint for inlet temperature is set at 5°C.
•
Humidity controlled Default setpoint for inlet humidity is set at 90%.
•
Both temperature and humidity controlled
4.2 Occupancy Management
Occupancy can be monitored internally (stand alone mode) or externally (remote mode). The mode of operation must be
selected in the web browser under runmode in the Actual/Setpoint screen or with the external display under Runmode.
The following modes of operation can be selected:
•
Manual Off Unit is always in unoccupied mode.
•
Manual On Unit is always running in occupied mode.
•
Contacts An on/off input is used to activate the occupied/unoccupied mode.
•
Internal clock Internal clock program is used to set occupied/unoccupied mode.
•
A push button connected to the controller can be used to extend occupied mode.
•
Bus Communication Occupied/unoccupied mode is externally set by Modbus or BACnet.
4.3 Stand alone mode
4.3.1 Internal Clock
Occupancy information comes from internal schedules. See Time Program menu description.
4.3.2 Operation Time Extension
HHFlex has a digital input for an operation time extension (OW01) pulse contact. If the input is activated by an external
pulse contact the unit will start to run or resume in normal mode operation.
If the pulse contact is used during normal operation time an additional operation time extension is effectuated (default 1
min). Multiple activation of the contact will have no effect on the duration of the additional operation time.
If the pulse contact is used during unoccupancy operation the units starts to run for the additional default value.
The value for out of hours override time extension is configurable in Actual/Setpoint.
4.4 Remote mode
Occupancy information comes from the on/off input; closed contact = occupied mode.