4
Installation
4.1 Security
Personnel:
HVAC technician
Protective equipment:
Protective gloves
Safety shoes
Industrial safety helmet
Only specialist personnel are allowed to perform the
described work on the VAV terminal unit.
Only skilled qualified electricians are allowed to work on
the electrical system.
CAUTION!
Danger of injury from sharp edges and sheet
metal parts.
–
Always wear protective gloves when handling the
unit.
NOTICE!
Risk of damage to the VAV terminal unit!
–
Handle the unit with care.
–
Lift the unit only by lifting the entire casing.
–
Never lift the unit by its control components, the
damper blade or differential pressure sensor.
4.2 Installation information
Select the installation location for the VAV terminal
unit such that the VAV terminal unit, inspection
accesses and the control components remain
accessible for the following work:
–
Wiring
–
Adjustment work (service socket if necessary)
–
Servicing and maintenance, e.g. to replace con-
trol components, if necessary in several parts
(controllers, transducers, actuators).
For information on space requirements, see product
data sheets.
Observe the air direction arrows on the units.
Do not swap supply and extract air units.
Do not swap over devices that belong together in
command and tracking controls (e.g. supply air and
extract air).
VAV terminal units are only allowed to be installed in
extract air systems in commercial kitchens if the
extract air has already been cleaned with aerosol
separators, see VDI 2052.
4.3 Installation orientation
In the case of terminal units with diaphragm pressure
transducers, the installation orientation of the control
component must be observed; possible installation ori-
entations are indicated on a sticker (Fig. 6) on the ter-
minal unit.
Other installation orientations or relocation of the pres-
sure transducer only after consultation with TROX.
The mounting position is freely selectable for terminal
units without installation orientation stickers.
Fig. 6: Sticker showing installation orientations
Installation orientation OK
Installation orientation not OK
4.4 Direction of airflow
It is imperative that air terminal units are installed in
their intended airflow direction. For this purpose, an air
direction arrow (Fig. 7/1, Fig. 8/1, Fig. 9/1) is attached to
the terminal unit. The air direction arrows are designed
differently depending on the combination of terminal unit
and control component.
Fig. 7: Air direction arrow on the scale sticker for Easy
type control components
Installation
Direction of airflow
VAV terminal units VARYCONTROL
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