EDM SYSAQUA 20 125 (EDM AQA1 S 13GB)

SYSAQUA
2
Specications
General
ThenewSYSAQUA.L/SYSAQUA.H 20 to 125havebeendesigned
andoptimizedtooperatewithR410Arefrigerantuid.Theyareof
singlerefrigerantcircuittype.
Theyare available in cooling only (SYSAQUA.L) and heat pump
(SYSAQUA.H)versions.
Eachversionsconsistsof12 sizes (20, 25, 30, 35, 40, 45, 55, 65,
75, 90, 105 & 125)andcoversanominalcoolingcapacityrange
from 19.3 to 129.8 kW and a nominal heating capacity range from
19.5 to 119.1 kW.
All units are equipped with two scroll compressors tted in
tandem for adapting to partial system loads.
Thegeneraloperationstatusofthemachineiscontinuouslyunder
the control of an IHM controller.
The SYSAQUA.L and SYSAQUA.H units can operate without
water tank, thanks to the IHM controller that implements an
auto-adaptative control logic ensuring a total protection of the
compressorsatdifferentloadorwatervolumeconditions.
Theminimumwatervolumerequestedincoolingmodeis3.5L/kW
for application air conditioning and 10L/kW for application process.
In heating mode, 12.5L/kW are recommended in order to
guarantee homogeneous temperatures during the defrosting
cycles(comfortandenergysavings).
A fan speed controllercanbealsosuppliedasfactory-ttedoption
toauthorizetheunittooperateincoolingmodeatlowambient
temperature.
SYSAQUA.L and SYSAQUA.H units can be supplied in several
versions:
STD (Standard) version:Includesalownoise
acousticalperformance.
S (Extra low noise) version:Obtainedbythe
installationofacousticboxaroundcompressors.
HPF version:Increasesthestaticpressure.
Cabinet and structure
Thecabinetandstructureoftheunitareofheavydutygalvanized
steel.Allgalvanizedsteelcomponentsareindividually painted by
aspecialpaintingprocessbeforetheassemblyoftheunit.
Thispaintingsystemperformsahomogeneousprotectiontothe
corrosion.Thepaintingisapolyesterpowderbasedtype,coloured
in RAL 7040.
The units SYSAQUA.L/SYSAQUA.H are suitable for outdoor
installation,directlyonthebuildingrooforatthegroundlevel.
Compressors
Eachunitisequippedwithtwoscrollcompressorsttedonarail
and assembled together to form tandem compressors.
The compressors are then mounted on rubber pads in order to
eliminatenoiseandvibrationtransmissions.
Thecompressormotorshaveadirectstart-up.Eachmotoriscooled
bytherefrigerantgasandisequippedwithanoverloadprotection.
A phase sequence monitorissuppliedasstandard.
Evaporator
The evaporator is consisting of a stainless steel plate heat
exchangerinsulatedwithclosedcellsyntheticfoam.Itisprotected
by an antifreeze electric heater to ensure a good protection
againstfreezingatlowambienttemperature(-10°Cmin.)when
theunitisswitchedoff.
Maximum working pressure is 10 bar at water side and 45 at
refrigerant side.
Condenser
Thecondenserisannedcoilconstructedwithseamlesscopper
tubes mechanically expanded into aluminium ns. The ns of
SYSAQUA.H coils are made of  aluminiumwith hydrophylicblue
coatingtofacilitatewaterdropletsdrain.
The condenser is largely dimensioned in order to optimize
performance and defrosting cycles.
Thecondensercanbeequipped,asoptional,aprotectivegrilleto
preventshocks.
Condenser fans and motors
Each unit has one ortwo axial fan,with 2 speeds.Accordingto
theversion,thefaniscabledinordertohavehighspeed(700to
900rpm)forStandardversionandlowspeed(530to680rpm)to
reducethesoundlevelforSversion.
The fan motor has IP54 grade and is equipped with a thermal
overloadprotection.
A pressostatic type fan speed controller can be delivered as
factory-ttedoption.Itallowstheunittooperateincoolingmode
atlowambienttemperaturesdownto-10°Cminimum,because
it regulates the fan speed in order to maintain the constant
condensingtemperature.
Allfansarettedwithaprotectivegrilleontop.
Refrigerant circuit
Allunitshaveonerefrigerantcircuitconsistingof:scrolltandem
compressors,plateheatexchanger,thermostaticexpansionvalve,
4-wayreversecyclevalveandliquidreservoir(heatpumpversion
only),condensercoil,aswell as safetyand controldevicessuch
as high pressureswitch, high/lowpressuretransducers and PED
safetyvalve.
Inspection on refrigerant via a sight glass can be done during
serviceoperations,byremovinganaccesspanel,withoutdisturbing
theunitoperatingconditions.
AsetofLPandHPgaugescanbefactoryttedasoptional.
Allrefrigerantcomponentsareshowninthefunctionaldiagrams
illustratedinthenextpages,section"Refrigerantowdiagrams".
Hydraulic circuit
Thankstothedesignexibilityonthehydrauliccircuit,alltheunits
canbeconguredinseveralways:
BASIC unit:Unitwithoutpump,thehydrauliccircuit
containsthefollowingcomponents:suppliedloose
waterlter,mountedwaterowswitch,watersafety
valve,automaticairvent,optionaleld-installed
in/out3/8"watervalves.
Allwaterpipingiscoveredwiththermalinsulation.
1P-SP:Onepumpunithavingthesameequipment
asBASICunit+apumpwith150kPaexternalstatic
pressure.Anairventisprovidedforthisconguration.
2P-SP:Twopumpunit(fromsize45)havingthe
sameequipmentasBASICunit+2pumpswith150
kPaexternalstaticpressure.Eachpumpcanbe
isolatedandreplacedwiththeaidoftwovalves.Anair
ventisalsoprovidedforthisconguration.
"Variable Primary Flow"isusedtomodulatethe
powerofthehydraulicpump
The differentcomponentsof hydraulickit are interconnectedby
Victauliccouplingsinordertofacilitatemaintenanceoperations.
Thehydraulicconnectionsareofmalegasthreadedtype;forthe
connection diameters, please refer to the physical data tables on
the next pages.