6.2 Functional test
Personnel:
Skilled qualified electrician
HVAC technician
To perform a functional test, the Easy controller has a
test push button, the operating states are displayed on
Chapter 3 ‘Structure and functional
To check the function of the VAV terminal unit, check the
position of the damper blade on the damper blade shaft
(marked),
Chapter 3.3 ‘Position of the damper blade’
Preparation:
Switch on the power supply.
Switch on air conditioning system.
1.
Press the test push button for approx. 1 second.
ð
Test function is started.
Actuator moves the damper blade to the
CLOSED position.
Actuator moves the damper blade to the
OPEN position.
Actuator moves the damper blade back to
the control position.
When the set volume flow rate is reached,
the LED lights up solidly.
2.
Override control V
min
on the master controller.
ð
Logging actual value signal U
3.
Override control V
max
on the master controller.
ð
Logging actual value signal U
6.3 Switching the direction of rotation
Personnel:
TROX Technical Service
Attention: only for service personnel – release by
untrained personnel endangers the control function!
With volume flow rate deviations, an incorrect effect of
actuator action (direction of rotation) of the controller
could be the cause.
Test:
1.
To test, disconnect the setpoint signal at terminal
(w) and set the V
min
potentiometer to 0%.
ð
If the actuator then moves the damper blade
to the OPEN position, the direction of rotation
is set incorrectly.
Rotation direction reversal (not for TVE type):
2.
Set V
min
and V
max
potentiometers to 100% each.
3.
Press the test push button (at least 4 s).
ð
The direction of rotation reversal is signalled
by the LED flashing briefly.
The actuator then performs a synchronisation
(slow flashing) and then returns to normal
operation.
Commissioning and operation
Switching the direction of rotation
Control component Easy for VAV terminal units
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