THR-UM-AA-480-XX_03154www.lairdtech.com
Specifications
ThebelowspecificationtableshowsratingsforastandardAA-480OutdoorCoolerunit
withoperationateither24VDCor48VDC.
Technical
Technology Thermoelectricmodules,forcedair,closedloop(not
mixingwithoutsideair),filter-less,non-refrigerant
CoolingatdT=0°C,andnominal/floatvoltage.1 480/529W(1638/1805Btu/hr)
Heating2 450W(1535Btu/hr)
Voltage(nominal/maximum) 24/28VDC|48/60VDC
Currentdraw,±10%(nominal) 19.3Amps|9.7Amps
Grounding(allvoltages) Positiveornegative
Weight 13.2kg(29.1lbs)
Panelmounting Through mount
Fanlife(L10at+40°C) Cold side 57,500hr, Warm side 75,000hr
Connector type Terminalblockwithcageclamp(12-28AWG)
Hi-pottesting 707 VDC
Environmental
Temperaturerange3(externalambient) -40°Cto+55°C(-40°Fto+131°F)
Temperaturerange(internalenclosure) -20°Cto+55°C(-4°Fto+131°F)
Degreeofprotection,enclosure4 NEMA4(IP55)
Degreeofprotection,unit5 IP54
Soundlevel(1mdistance) 65dB(A)
Over-TempThermostat(hotandcoldsideheatsink) -
1) Coolingcapacitiesatnominal/floatvoltageareratedatexternaltemperaturesof35°Cand50°Crespectively.Floatvoltageis
definedat28VDCfor24voltversionor54VDCfor48voltversion.
2) Heatingcapacityisratedatexternaltemperatureof-40°C,nominalvoltage,andΔT=45°C.
3) Controllerfunctionshouldnotoperatetheexternalfanduringheatingmode.Thiswillpullheatoutofthecabinet.
4) Thehighestenvironmentalprotectionlevelrequiresanexternalshroudandisdefinedastheprotectionlevelfortheenclo-
sure.
5) Ratingforunitwithoutprotectiveshroud.
Note:ThespecifiedperformanceofanyLairdcoolingunitisdependentonhowitishandledandincorporatedintothefinal
product.Thisincludeselementssuchasthesystemdesign,insulationdesign,andassemblymethod.WhileLairdisableto
providegeneralguidelinesbaseduponourexperience,itisultimatelytheresponsibilityoftheOEMtovalidateeachproduct
and its performance for its intended use.
Technical Specifications
LairdTEAproductnomenclaturecanbedefinedasfollows:
HEAT
TRANSFER
AA
(AirtoAir)
100Watts
150Watts
200Watts
250Watts
480Watts
24VDC
48VDC
IP44
IP54
00-XX
Open loop, no temperature control
LE-XX
Closedloop,thermostaticcontrol
(coolingmode>35C,heatingmode<5C)
LK-XX
Closedloop,thermostaticcontrol
(coolingmode>25C,heatingmode<10C)
COOLING
POWER
VOLTAGE FANS TEMPERATURE
CONTROLLERS
ConsultwithLairdforcustomdesignedbi-directionalcontrolfeatures,alarmsor
self start checks.