19
Boost Overrun
Boost Overrun Timer is variable between
0 and 30 minutes. Rotate potentiometer
to change overrun time. Boost Overrun
Timer adjustment can be done at any
time without the need to move the
Program / Run Header Link.
Controller Reset
Following a controller reset the ventilation system will need to be fully re-
commissioned. The unit will need to be powered up during the reset procedure.
1.
Place the Program / Run Header Link in the Run Position
2.
Rotate the Continuous Speed and Boost Speed adjustment fully clockwise.
3.
Place Program / Run Header Link in the Program Position.
4.
Rotate the Continuous Speed adjustment potentiometer fully anti clockwise.
Hardware Reset
Certain conditions (repeated supply interruptions etc.) can activate the automatic
motor protection mode. Where by the fan motors are prevented from operating.
This requires a hardware reset to return the unit to normal operating mode, to
achieve this power to the unit should be switched off for 5 minutes, restoring
the power after this time will reset the hardware of both the motor and PCB.
Commissioning settings are not affected during a hardware reset.
Boost Overrun Pot positions
Boost
Overrun
Timer
Program
Switch
Run
Continuous
Boost
Boost Overrun Timer
Extract
Supply
Potentiometers
Extract
Supply
BP
40262/099
Boost
Cont
1
2
3
4
5
6
7
8
0
30
15
DO 4937 iss 01
