First Starting; Preliminary Checks; Functional Tests - Daikin UATYA-BBAY1 Manuel D'installation, D'utilisation Et D'entretien

7.2 First starting

7.2.1

Preliminary checks

To operate, the unit must have the external OK signal input closed.
Refer to the wiring diagram supplied with the unit for connection of the external OK signal input.
If it is not necessary for system requirements, the external OK signal input must be short-circuited.
For this purpose, a cable is already foreseen and partially connected to the contacts.
The cable is already connected on the clamp "2"; To complete the bridge connect it to the clamp "1".
7.2.2

Functional tests

The main ventilation system will start a few seconds after the unit has started.
The starting of the compressors depends on the thermoregulation request and on possible activation of the air
exchange on starting the washing function.
When the washing function is active, it's stop can be forced.
This icon on the top of the main screen means that the washing function is active.
Washing function can be stopped through the dedicated button reachable by pushing on the washing icon.
Check that the absorption of the motors of the main ventilation system is within the rated value. Higher values indicate
an excessive air flow rate that, if it continues, can cause the electrical protection devices of the motors to cut in.
Check that the values measured by the sensors of the control (temperatures, pressures) correspond to the real
values.
The unit automatically controls the ventilation airflow, check on the unit display that the desired setpoint has been
reached. Lower readings of the airflow may be dued to excessive pressure drops within the aeraulic circuit.
After a few hours of operation of the compressors, check that the liquid sight glass has a green ring: if it is yellow,
there is moisture in the circuit. In this case, the circuit must be dried by qualified authorised personnel.
Check that bubbles do not appear at the liquid sight glass. The continuous passage of bubbles can indicate there is
insufficient refrigerant and it needs to be topped up. However, the presence of a few bubbles is allowed.
It is mandatory to keep a register for the unit (not supplied), which allows you to keep track of the work carried out
on the unit. This will make it easier to appropriately organize the work to facilitate the checks and the prevention of
malfunctions.
State the following in the register: the type of refrigerant, the date and type of work done (routine maintenance or
repair), description of the work with any parts replaced, measures implemented, the operator who carried out the
work and his qualification.
We reserve the right to make changes without any prior notice.
UATYA
4P645202-2
Translation from original instructions
Packaged Rooftop
69