Daikin UATYQ20ABAY1, Инструкция по установке, эксплуатации и обслуживанию

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Translation from original instructions
Installation manual
31
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UATYQ*Y1
Packaged Rooftop
4P522680-1
6.2 First starting
6.2.1 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.
6.2.2 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.
If the washing function is enabled, it can be overridden and stopped by pressing the "enter" button in
the main screen.
Check that the values measured by the sensors of the control (temperatures, pressures) correspond to the real
values.
If the unit has automatic control of the air flow rate of the main ventilation system, check on the user interface of the
control that the set flow rate set point has been reached. Lower flow rate values indicate excessive head losses in
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.