37
If the test fails, the display will show "ERROR". The fault must then be rectified. The ventilation unit will shut down as in case of fire. The
test must be performed again until "OK" is displayed in the menu.
For the overall system, all requirements in DS 428 must be met before a delivery can be made.
Manual test of fire and smoke dampers
You should checked that all dampers change position physically. See the supplier's instructions.
Connect the fire damper switches for, respectively, open and closed position to two digital inputs on the circuit board (see wiring
diagram).
Fire thermostat
Temperature sensor is warmed up with fan heater. See the supplier's instructions.
Release-signal to ventilation unit
During a fire the ventilation unit will shut down and the fire and smoke dampers will close. Following that, the alarm can only be can-
celled manually on the control panel. You will then be able to restart the unit.
Operating signal from ventilation unit
An active signal should cause all dampers to activate (open) if there are no alarms. If there is no signal, the unit will act as in case of fire
and all dampers will close.
To Next Page
Loading...
