Daikin UATYQ20ABAY1 [17/44] Control and safety devices

Translation from original instructions

Installation manual

17

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UATYQ*Y1

Packaged Rooftop

4P522680-1

4.3 Control and safety devices

The unit is integrally managed by an electronic microprocessor control that, through the various installed temperature

and pressure sensors, keeps its operation within the safety limits.

conditionsoftheairintheinteriorenvironment.Thesimplestcongurationworksintotalairrecirculation.

The refrigeration cycle allows heat to be transferred from a uid at a lower temperature to a uid at a higher

temperature.Rooftopunitsareequippedwithoneormorerefrigerantcircuits;incoolingmode,airiscooled-andif

necessarydehumidied-byannedcoil(evaporator);theremovedheatisrejectedtotheoutsidebyanothernned

coil(condenser).

In addition to this, the heat pump versions allow the evaporator and condenser roles to be reversed, thereby providing

the heating function.

Besides air ltration, other functions are possible, which change according to the conguration and the selected

accessories:partialairrenewal,thermodynamicrecovery,supplementaryheatingbyelectricheaters,freecooling/

free heating.

galvanizedsheet-ironcasinglledwithpolyurethanefoamtoguaranteethethermalandacousticinsulationoftheunit.

Alternatively, the panels are insulated with closed-cell insulating matting or with rock wool, for the "heat generator"

section.Thesurfaceofthepanelsincontactwiththetreatedairismadeofgalvanizedsheet-irontofacilitatecleaning

andsanitizingoperations.

Thenon-removablepanelsarexedtothestructurewithscrewscontainedinnylonbusheswithplug.

The removable panels are attached to the structure with nylon eccentrics or inserts and have handles to make them

easier to remove.

4.6 Specications

with axial fans.