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Chapter 5
Functional description
Manual Corrigo Ventilation, revision R
5.6.2 Fire dampers
Fire dampers are normally configured to open on fire alarm. However, they can be configured to be
normally open instead via the display.
Se chapter 16.15 for more information on the function.
Fire damper exercising
Fire damper exercising can be configured. The exercise interval is settable. To be able to use this
function, all the dampers must have end-position switches.
The digital input: "Fire damper end-switch monitoring" should be wired to all the fire damper end
position switches.
When the test cycle is initiated, the output "Fire dampers" will be activated and the dampers will
begin to move. Within the set time (90 sec) the signal on "Fire damper end-switch monitoring" must
change to indicate that the dampers have left their normal positions. If not an alarm will be
triggered.
Then, within the set time, ”Fire damper, end-switch monitoring” must change again to indicate that
all the dampers have reached the other end position. If not an alarm will be triggered.
When all dampers have reached the end position the output "Fire dampers" will be reset to drive the
dampers back to normal position. Again, within the set time (90 sec) the signal on the input "Fire
damper end-switch monitoring"must change to indicate that the dampers have left the end positions.
If not an alarm will be triggered.
Then, within the set time, "Fire damper end-switch monitoring" must change again to indicate that
all the dampers are back to their normal positions. If not an alarm will be triggered.
The controller can be configured to stop the air handling unit during the damper testing.
All dampers must be wired to the same output in order to get correct results.
The fire alarm input can be configured as normally closed or normally open.
In- and outputs
DO
Outdoor air damper
DO
Exhaust air damper
DO
Fire damper
DI
Fire alarm
DI
Fire damper end switch monitoring
5.7 Extended running and External switch
The digital inputs for extended running can be used to force the unit to start although the timer says
the running mode should be “Off”. Normal running always takes precedence over reduced speed.
"Extended Operation, Normal" takes precedence over the timer output for reduced speed.
For 2-speed fans and pressure/flow controlled fans there are inputs for normal speed and reduced
speed. The unit will run for the set time. If the running time is set to 0 the unit will only run as long
as the digital input is closed.
The signal ”External switch” will stop the unit, even if the timer or one of the signals "Extended
Operation, Normal" or "Extended Operation, Reduced" says it should stay in running mode.
90°
Damper...
Damper 3
Damper 2
Damper 1
i
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