Daikin UATYQ45ABAY1 [26/44] Electrical connections

Translation from original instructions

Installation manual

We reserve the right to make changes without any prior notice.

UATYQ*Y1

Packaged Rooftop

4P522680-1

5.4 Electrical connections

Allelectricaloperationsmustbecarriedoutbypersonnelhavingthenecessarylegalrequirements,andtrainedand

informed on the risks connected with these operations.

Thesizingandcharacteristicsofthepowerlinesandrelevantcomponentsmustbedeterminedbysta󰀨qualiedto

design electrical systems, following the international and national regulations of the place of installation of the units

in conformity with the regulations in force at the time of installation.

To install components outside the unit, you must refer to the wiring diagram supplied with the unit.

The wiring diagram, along with the manuals, must be kept carefully and made available for future work on the unit.

Overview:

- The electrical connections must comply with the information shown in the wiring diagram attached to the unit and

the regulations in force in the place of installation.

- groundingisrequiredbylaw;

- The installer must connect the earth cable to the PE terminal on the earth bar situated in the electrical control

panel.

- Make sure the power supply voltage corresponds to the rated data of the unit (voltage, number of phases,

frequency)statedontheplateontheunit.

- The standard supply voltage (see specic wiring diagram) must not uctuate by more than ±10% and the

unbalancebetweenphasesmustalwaysbelessthan2%.

- The control circuit power supply is taken from the power line via a transformer situated in the electrical control

panel; the control circuit is protected by fuses.

- Makesurethepowerlineiscorrectlyconnectedwithaclockwisephasesequence.

Intheelectricalcontrolpanel,thereisaphasesequencerelayprovidedwithtwoLEDs.

The green LED indicates the presence of the three-phase line.

TheyellowLEDindicatesthecorrectphasesequence.

Fig.8Phasesequencerelay

Thecontactofthephasesequencerelaycutso󰀨the230Vpowersupplyandthereforethecontroller

will in any case be powered, but the fans and compressors will not start.

Toxthepowercable,usepowercablexingsystemsthatresisttensileandtorsionalstresses.

The weight of the cables must not be borne by the electrical connection system.

Make sure no voltage is present before carrying out any operation on electrical parts.