6
Commissioning and opera-
tion
6.1 Commissioning
Code of good practice for commissioning
Commissioning is governed by the standard "DIN EN
12599 Testing and measuring procedures for the
transfer of installed ventilation and air conditioning
systems", and, if applicable, contractually agreed
services between HVAC contractors, system owners
and installation engineers. The standard describes
the essential commissioning steps of the complete-
ness check, function check, function measurement
as well as report generation and handover.
Factory calibration
TROX VAV terminal units are prepared, calibrated and
tested at the factory with regard to air distribution tech-
nology. The commissioned operating parameters are
also set. Once the electrical or pneumatic connections
have been correctly installed and made, the terminal
unit is ready for operation.
Exceptions:
VAV terminal units with control component of the
Easy type
–
Set operating parameters Vmin and Vmax on
potentiometers (screwdriver required).
Subsequent volume flow adjustments
–
Subsequent adjustments to the volume flow rate
operating range may require manufacturer-spe-
cific adjustment devices or PC software,
depending on the control component.
Network integration
–
VAV terminal units with bus compatible control
components may require integration into the
building's network infrastructure to be performed
by others (network commissioning).
Special constructions
–
VAV terminal units without standardised control
components (e.g. special versions) may require
parameterisation or network integration to be
performed by others. Manufacturer-specific tools
such as adjustment devices or software pack-
ages and associated interface adapters may be
required for this.
Carrying out the functional test
Prerequisites for the functional test
Terminal unit has been correctly installed in the
ducting system:
–
Airflow direction, according to airflow direction
Chapter 4.4 ‘Direction of airflow’
–
4.5 ‘Upstream conditions’ on page 16
Electrical or pneumatic connections have been cor-
rectly installed and tested.
Ventilation and air conditioning system is in opera-
tion (fans running).
Supply voltage or the compressed air supply is
switched on.
Measuring hoses between differential pressure
sensor and pressure transducer are undamaged
and kink-free.
1.
Check installation orientation and carry out zero
point correction, see instructions for the control
component.
Installation orientation and zero point
correction
Only required for control components with
static diaphragm pressure transducer. Control
components with static diaphragm pressure
transducers can be identified by the installation
orientation sticker
Ä
2.
Compare volume flow rate actual value signal with
setpoint value signal. The setpoint value signal
can be variable or constant, depending on the
intended application.
3.
Check damper blade positions:
Damper blade in control position
Door open
Door closed
4.
Check override control functions
5.
Further function tests on the VAV terminal unit can
only be carried out if it is known which control
component has been fitted.
Information on this can be found in the documen-
tation of the TROX control components or in the
product information of the control component
manufacturer.
6.2 Operation
Once commissioning has been completed, the controller
will operate independently and require no intervention
from the system owner.
Depending on the area of application of the air terminal
unit, test specifications and intervals may have to be
observed; for example, when used on fume cupboards,
an annual functional test must be carried out and docu-
mented.
In case of a malfunction, decommission the terminal unit
and have it repaired before commissioning it again.
Commissioning and operation
Operation
VAV terminal units VARYCONTROL
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