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LEW CS/CL 042
Инструкция по эксплуатации Страница: 12

Galletti LEW CS/CL 042 Инструкция по эксплуатации онлайн [12/56] 466139

Galletti LEW HS/HL 112 Инструкция по эксплуатации онлайн [12/56] 466595

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Page12of56

RG66006951‐Rev.01

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NOTE: due to thermal insulation the data plate (in compliance with PED CE 97/23) is not legible. However, the serial

number of the heat exchanger and the declaration of conformity are both recorded during production and are an

integralpartofHiref'sarchive.

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1.3.3 De-superheater for partial heat recovery (optional)

The option ofpartialheat recovery is im

plemented with a braze‐welded plateheat exchangerplaced in series on the

finnedpackcondenseranditssizelimitspressuredropsontherefrigerantsidetoaminimum.

Allmachinesconfiguredwithheatrecoveryuseasperstandardmodulatingcondensationcontrol.Topreventalackof

balance in the cooling cir

cuit, if the water temperature is too low when the recovery starts, the hydraulic recovery

circuitisimplementedasindicatedinthefollowingfigure:alowwatertemperatureatrecoverywouldcauseadropin

thecondensationtemperatureandthereforeaninsufficientpressurejumpontheexpansionvalvewiththeensuingrisk

ofthesafetydevic

esbeingtriggered.



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The bulb of the 3‐way mixer valve is placed at the de‐superheater exchanger inlet, which by mixing the hot water

produced with colder water from the tank allows you to limit the time needed for the system to reach full operating

capacity to a few moments. A buffer tank must be pla

ced between the unit and the utility since the demand for hot

wateranditsavailabilityarenotsimultaneous,becauseitneedsthecompressorstoberunning.

Itshouldbepointedoutthattheheatrecoveryoutputislinkedtothedispensedcoolingoutputandthat,therefore,in

partialloadsituationsitisalsoreduce

djustthesame;thisaspectmustbetakenintoconsiderationforthedimensions

of the buffer tank. The partial heat recovery option is supplied only with the de‐superheater exchanger. The other

componentsofthecircuitlaidoutinthepreviousfigurearenotin

cludedinthesupply.



1.3.4 Utility and dissipation side cycle inversion valves (optional)

WhenLEWHreversiblechillersswitchfromchillertoheatpump,andviceversa,theyperformtwocycleinversions:one

onthecoolantcircuitandoneonthewatercircuit.Theinversionvalveofthewater‐sidecycleswitchesfrompositionA

to position B and vice versa by means of an electrical driver without cha

nging the direction of travel for the outside

utilities. This allows you to invert the direction of the flow in the heat exchangers, keeping them against the flow in

relationtotherefrigerantfluidineveryoperatingmode.Thewater‐sidecy

cleinversionvalveisanoptionalcomponent.



TANK

DIVERTER

RECIRCULA

IONPUMP

HEAT

Galletti LEW CS/CL 042 Инструкция по эксплуатации онлайн [12/56] 466139

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