14
OPERATION
14
Pure controller | Installation instructions
3.7 Sensor technology activated
Depending on the sensor connected, the ventilation unit's range of functions increases.
The triggering of a sensor is indicated by flashing of the red (safety device) or green (external
sensor) LED, and this cannot be switched off manually.
Connecting an external switching contact (p4 / p4 Flat versions)
If the pre-defined limit on the external sensor, e.g. CO2 sensor or humidistat, (cannot be changed
on the controller) is exceeded, the sensor relays this to the controller:
•
the green LED on the Pure controller flashes.
•
The controller switches all connected ventilation units to ventilation mode with a pre-defined air
flow of 75%.
Ventilation
with an air flow of 75 % cannot be selected manually
as it is only enabled when the sensor technology is triggered.
The function remains active until the corresponding limit value falls below the pre-set limit value
again:
• the green LED on the Pure controller goes out.
• All of the ventilation units connected to the controller restart in the originally set operating mode
and ventilation level.
Integrating a safety device (p4 Fire / p4 Fire Flat versions)
The external interface is used to integrate safety devices, e.g. a 4 Pa pressure sensor, into the
ventilation system while simultaneously operating the ventilation system with fireplaces.
WARNING:
Fo
r joint operation with fireplaces, safety measures must be taken to prevent a nega
-
tive pressure from developing in the building.
• The responsible chimney sweep and/or building planner decides which measures need to be
carried out.
If this interface is used in conjunction with an external pressure sensor (4 Pa pressure sensor), the
air pressure indoors is continuously monitored. As soon as this exceeds the safety-relevant limit,
the sensor transmits this to the controller.
•
The red LED on the Pure controller flashes.
•
The controller switches all connected ventilation units off immediately.
The function remains active until the corresponding limit value falls below the safety-relevant limit
value again:
• the red LED on the Pure controller goes out.
• All of the ventilation units connected to the controller restart in the originally set operating mode
and ventilation level.
Sensor
| |
CO
2
Sensor
Sensor
| |
CO
2
75 %
Sensor
PA
PA
Sensor
| |
CO
2
Sensor
Sensor
| |
CO
2
75 %
Sensor
PA
PA
